Exadata Compute Node – Netsoftmate

Step-by-step Guide of Exadata Snapshot Based Backup of Compute Node to NFS Share

Backing up file systems on Oracle Exadata compute can be a daunting task if you are unaware of the prerequisites and best practices. To help you backup your file systems effectively and with least discrepancies, we are bringing you this interesting step-by-step guide on how to back up your file system using Oracle Exadata Sanpshot Based Backup of Compute Node to NFS Share

It is very important to take file system backup on Oracle Exadata compute nodes before we make any major changes to the operating system or critical software. On Oracle Exadata Compute nodes / (root) and /u01 file systems contains the operating system and GI/DB software respectively. These are the most critical file systems on Oracle Exadata computes.

By default, the / (root) and /u01 file system are sized 30GB and 100GB respectively.

Scenarios in which we must take file system backup are:

– Operating System Patching or Upgrade
– Grid Infrastructure Patching or Upgrade
– Database Patching or Upgrade
– Operating System configuration changes
– Increasing/decreasing file system size

In this article, we will demonstrate how to backup file system on Oracle Exadata Compute nodes running Linux Operating System to external storage NFS Share.

Environment Details

Exadata Model	X4-2 Half Rack HP 4 TB
Exadata Components	4 – Compute nodes, 7 – Storage cells & 2 – IB switches
Exadata Storage cells	DBM01CEL01 – DBM01CEL07
Exadata Compute nodes	DBM01DB01 – DBM01DB04
Exadata Software Version	19.2.3.0
Exadata DB Version	11.2.0.4.180717

Prerequisites

– Root user access on Compute nodes
– NFS mount with sufficient storage to storing file system backup

Current root and /u01 file system sizes

[root@ip01db01 ~]# df -h / /u01

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/VGExaDb-LVDbSys1 59G 39G 18G 70% /

/dev/mapper/VGExaDb-LVDbOra1 197G 171G 17G 92% /u01

NFS share details

10.10.10.1:/nfs/backup/

1. As root user, log in to the Exadata Compute node you wish to backup

[root@ip01db01 ~]# id root

uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)

2. Create a mount point to mount NFS share

[root@dm01db01 ~]# mkdir -p /mnt/backup

[root@dm01db01 ~]# mount -t nfs -o rw,intr,soft,proto=tcp,nolock 10.10.10.1:/nfs/backup/ /mnt/backup

3. Determine the file system type extension root and u01 file system

[root@ip01db01 ~]# mount -l

sysfs on /sys type sysfs (rw,relatime)

proc on /proc type proc (rw,relatime)

devtmpfs on /dev type devtmpfs (rw,nosuid,size=131804372k,nr_inodes=32951093,mode=755)

securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)

tmpfs on /dev/shm type tmpfs (rw,size=264225792k)

/dev/mapper/VGExaDb-LVDbSys1 on / type ext3 (rw,relatime,errors=continue,barrier=1,data=ordered) [DBSYS]

/dev/mapper/VGExaDb-LVDbOra1 on /u01 type ext3 (rw,nodev,relatime,errors=continue,barrier=1,data=ordered) [DBORA]

/dev/sda1 on /boot type ext3 (rw,nodev,relatime,errors=continue,barrier=1,data=ordered) [BOOT]

4. Note down the file system type for root and /u01: ext3. Take a snapshot-based of the root and u01 directories, Label the snapshot and Mount the snapshot

[root@dm01db01 ~]# lvcreate -L5G -s -n root_snap /dev/VGExaDb/LVDbSys1

Logical volume “root_snap” created.

[root@dm01db01 ~]# lvcreate -L5G -s -n u01_snap /dev/VGExaDb/LVDbOra1

Logical volume “u01_snap” created.

[root@dm01db01 ~]# e2label /dev/VGExaDb/root_snap DBSYS_SNAP

[root@dm01db01 ~]# e2label /dev/VGExaDb/u01_snap DBORA_SNAP

[root@dm01db01 ~]# mkdir -p /mnt/snap/root

[root@dm01db01 ~]# mkdir -p /mnt/snap/u01

[root@dm01db01 ~]# mount /dev/VGExaDb/root_snap /mnt/snap/root -t ext3

[root@dm01db01 ~]# mount /dev/VGExaDb/u01_snap /mnt/snap/u01 -t ext3

[root@dm01db01 ~]# df -h /mnt/snap/root

[root@dm01db01 ~]# df -h /mnt/snap/u01

5. Change to the directory for the backup and Create the backup file

[root@dm01db01 ~]# cd /mnt/backup

[root@dm01db01 ~]# tar -pjcvf /mnt/backup/mybackup.tar.bz2 * /boot –exclude /mnt/backup/mybackup.tar.bz2 > /tmp/backup_tar.stdout 2> /tmp/backup_tar.stderr

6. Monitor the /tmp/backup_tar.stderr file for errors. Errors such as failing to tar open sockets can be ignored.

7. Unmount the snapshots and remove the snapshots for the root and /01 directories.

[root@dm01db01 ~]# cd /

[root@dm01db01 /]# umount /mnt/snap/u01

[root@dm01db01 /]# umount /mnt/snap/root

[root@dm01db01 /]# df -h /mnt/snap/u01

[root@dm01db01 /]# df -h /mnt/snap/root

[root@dm01db01 /]# ls -l /mnt/snap

[root@dm01db01 /]# rm -rf /mnt/snap

[root@dm01db01 /]# lvremove /dev/VGExaDb/u01_snap

Do you really want to remove active logical volume u01_snap? [y/n]: y

Logical volume “u01_snap” successfully removed

[root@dm01db01 /]# lvremove /dev/VGExaDb/root_snap

Do you really want to remove active logical volume root_snap? [y/n]: y

Logical volume “root_snap” successfully removed

8. Unmount the NFS share

[root@dm01db01 /] umount /mnt/backup

Repeat the above steps on the remaining compute nodes to backup root & u01 file system

We hope this article helps you smoothly backup your file system on Oracle Exadata Compute node running Oracle Linux using NFS Share. Stay tuned for more step-by-step guides on implementing and using Oracle Database Systems exclusively on Netsoftmate

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February 1, 2020

Move Database from DATA to RECO ASM Disk Group On Exadata

Exadata Database machine consists of 3 ASM Disk Groups:
+DATA for Database Files
+RECO for Online Redo log and Archive log files
+DBFS_DG for Cluster configuration files such as OCR and Voting disks

In a Customized environment Customers can choose to have more than 3 Disk Groups. But it is recommended to have 3 Disk Groups. The DATA and RECO disk groups can be sized 80%-20% or 40%-60% respectively of over all storage capacity. Sometimes it is possible that +DATA disk group can be filled very fast if you have several databases.

In this article we will demostrate how to move a Database from +DATA disk group to +RECO disk group.

Steps to move a database from +DATA to +RECO ASM Disk Group:

Step 1: Get the ASM Disk Information

SQL> select state,name from v$asm_diskgroup;

STATE NAME
———– ——————————
MOUNTED RECO
MOUNTED DBFS_DG
MOUNTED DATA

Step 2: Get the Database files details

SQL> select name, open_mode,database_role from gv$database;

NAME OPEN_MODE DATABASE_ROLE
——— ——————– —————-
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY

SQL> select name from v$controlfile;

NAME
——————————————————————————–
+DATA/dbm01/controlfile/current.256.976374731

SQL> select name from v$datafile;

NAME
——————————————————————————–
+DATA/dbm01/datafile/system.259.976374739
+DATA/dbm01/datafile/sysaux.260.976374743
+DATA/dbm01/datafile/undotbs1.261.976374745
+DATA/dbm01/datafile/undotbs2.263.976374753
+DATA/dbm01/datafile/undotbs3.264.976374755
+DATA/dbm01/datafile/undotbs4.265.976374757
+DATA/dbm01/datafile/users.266.976374757

7 rows selected.

SQL> select name from v$tempfile;

NAME
——————————————————————————–
+DATAC1/dbm01/tempfile/temp.262.976375229

SQL>

SQL> select member from v$logfile;

MEMBER
——————————————————————————–
+DATA/dbm01/onlinelog/group_1.257.976374733
+DATA/dbm01/onlinelog/group_2.258.976374735
+DATA/dbm01/onlinelog/group_7.267.976375073
+DATA/dbm01/onlinelog/group_8.268.976375075
+DATA/dbm01/onlinelog/group_5.269.976375079
+DATA/dbm01/onlinelog/group_6.270.976375083
+DATA/dbm01/onlinelog/group_3.271.976375085
+DATA/dbm01/onlinelog/group_4.272.976375087
+DATA/dbm01/onlinelog/group_9.274.976375205
+DATA/dbm01/onlinelog/group_10.275.976375209
+DATA/dbm01/onlinelog/group_11.276.976375211
+DATA/dbm01/onlinelog/group_12.277.976375215
+DATA/dbm01/onlinelog/group_13.278.976375217
+DATA/dbm01/onlinelog/group_14.279.976375219
+DATA/dbm01/onlinelog/group_15.280.976375223
+DATA/dbm01/onlinelog/group_16.281.976375225

16 rows selected.

SQL> select filename from v$block_change_tracking;

FILENAME
——————————————————————–
+DATA/dbm01/changetracking/ctf.282.976375227

Step 3: Backup Database using RMAN copy command as shown below. Here we are moving database to +RECO ASM Disk Group.

RMAN> run {
allocate channel c1 device type disk;
allocate channel c2 device type disk;
allocate channel c3 device type disk;
allocate channel c4 device type disk;
allocate channel c5 device type disk;
allocate channel c6 device type disk;
allocate channel c7 device type disk;
allocate channel c8 device type disk;
backup as copy database include current controlfile format ‘+RECO’;
release channel c1;
release channel c2;
release channel c3;
release channel c4;
release channel c5;
release channel c6;
release channel c7;
release channel c8;
}

released channel: ORA_DISK_1
allocated channel: c1
channel c1: SID=1189 instance=dbm011 device type=DISK

allocated channel: c2
channel c2: SID=1321 instance=dbm011 device type=DISK

allocated channel: c3
channel c3: SID=1343 instance=dbm011 device type=DISK

allocated channel: c4
channel c4: SID=1387 instance=dbm011 device type=DISK

allocated channel: c5
channel c5: SID=1497 instance=dbm011 device type=DISK

allocated channel: c6
channel c6: SID=1519 instance=dbm011 device type=DISK

allocated channel: c7
channel c7: SID=1541 instance=dbm011 device type=DISK

allocated channel: c8
channel c8: SID=1563 instance=dbm011 device type=DISK

Starting backup at 26-MAY-18
channel c1: starting datafile copy
input datafile file number=00001 name=+DATA/dbm01/datafile/system.259.976374739
channel c2: starting datafile copy
input datafile file number=00002 name=+DATA/dbm01/datafile/sysaux.260.976374743
channel c3: starting datafile copy
input datafile file number=00003 name=+DATA/dbm01/datafile/undotbs1.261.976374745
channel c4: starting datafile copy
input datafile file number=00004 name=+DATA/dbm01/datafile/undotbs2.263.976374753
channel c5: starting datafile copy
input datafile file number=00005 name=+DATA/dbm01/datafile/undotbs3.264.976374755
channel c6: starting datafile copy
input datafile file number=00006 name=+DATA/dbm01/datafile/undotbs4.265.976374757
channel c7: starting datafile copy
input datafile file number=00007 name=+DATA/dbm01/datafile/users.266.976374757
channel c8: starting datafile copy
copying current control file
output file name=+RECO/dbm01/datafile/users.284.977121353 tag=TAG20180526T063551 RECID=16 STAMP=977121353
channel c7: datafile copy complete, elapsed time: 00:00:02
output file name=+RECO/dbm01/controlfile/backup.283.977121353 tag=TAG20180526T063551 RECID=17 STAMP=977121353
channel c8: datafile copy complete, elapsed time: 00:00:01
output file name=+RECO/dbm01/datafile/system.291.977121353 tag=TAG20180526T063551 RECID=18 STAMP=977121389
channel c1: datafile copy complete, elapsed time: 00:00:46
output file name=+RECO/dbm01/datafile/sysaux.290.977121353 tag=TAG20180526T063551 RECID=23 STAMP=977121392
channel c2: datafile copy complete, elapsed time: 00:00:46
output file name=+RECO/dbm01/datafile/undotbs1.289.977121353 tag=TAG20180526T063551 RECID=21 STAMP=977121392
channel c3: datafile copy complete, elapsed time: 00:00:46
output file name=+RECO/dbm01/datafile/undotbs2.288.977121353 tag=TAG20180526T063551 RECID=19 STAMP=977121392
channel c4: datafile copy complete, elapsed time: 00:00:46
output file name=+RECO/dbm01/datafile/undotbs3.287.977121353 tag=TAG20180526T063551 RECID=20 STAMP=977121392
channel c5: datafile copy complete, elapsed time: 00:00:46
output file name=+RECO/dbm01/datafile/undotbs4.286.977121353 tag=TAG20180526T063551 RECID=22 STAMP=977121392
channel c6: datafile copy complete, elapsed time: 00:00:46
Finished backup at 26-MAY-18

Starting Control File and SPFILE Autobackup at 26-MAY-18
piece handle=+RECO/dbm01/autobackup/2018_05_26/s_977121397.282.977121399 comment=NONE
Finished Control File and SPFILE Autobackup at 26-MAY-18

released channel: c1

released channel: c2

released channel: c3

released channel: c4

released channel: c5

released channel: c6

released channel: c7

released channel: c8

Step 4: Verify the RMAN Database Copy using RMAN

RMAN> list copy of database;

List of Datafile Copies
=======================

Key File S Completion Time Ckp SCN Ckp Time
——- —- – ————— ———- —————
18 1 A 26-MAY-18 1330853 26-MAY-18
Name: +RECO/dbm01/datafile/system.291.977121353
Tag: TAG20180526T063551

9 1 A 26-MAY-18 1330410 26-MAY-18
Name: +RECO/dbm01/datafile/system.286.977120961
Tag: TAG20180526T062919

3 1 A 26-MAY-18 1330155 26-MAY-18
Name: +RECO/dbm01/datafile/system.280.977120795
Tag: TAG20180526T062633

23 2 A 26-MAY-18 1330856 26-MAY-18
Name: +RECO/dbm01/datafile/sysaux.290.977121353
Tag: TAG20180526T063551

12 2 A 26-MAY-18 1330413 26-MAY-18
Name: +RECO/dbm01/datafile/sysaux.287.977120961
Tag: TAG20180526T062919

2 2 A 26-MAY-18 1330158 26-MAY-18
Name: +RECO/dbm01/datafile/sysaux.281.977120795
Tag: TAG20180526T062633

21 3 A 26-MAY-18 1330859 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs1.289.977121353
Tag: TAG20180526T063551

11 3 A 26-MAY-18 1330416 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs1.288.977120961
Tag: TAG20180526T062919

4 3 A 26-MAY-18 1330154 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs1.279.977120795
Tag: TAG20180526T062633

19 4 A 26-MAY-18 1330862 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs2.288.977121353
Tag: TAG20180526T063551

10 4 A 26-MAY-18 1330419 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs2.289.977120961
Tag: TAG20180526T062919

1 4 A 26-MAY-18 1330153 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs2.278.977120795
Tag: TAG20180526T062633

20 5 A 26-MAY-18 1330865 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs3.287.977121353
Tag: TAG20180526T063551

13 5 A 26-MAY-18 1330422 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs3.290.977120961
Tag: TAG20180526T062919

7 5 A 26-MAY-18 1330184 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs3.282.977120829
Tag: TAG20180526T062633

22 6 A 26-MAY-18 1330868 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs4.286.977121353
Tag: TAG20180526T063551

15 6 A 26-MAY-18 1330425 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs4.291.977120961
Tag: TAG20180526T062919

6 6 A 26-MAY-18 1330187 26-MAY-18
Name: +RECO/dbm01/datafile/undotbs4.283.977120829
Tag: TAG20180526T062633

16 7 A 26-MAY-18 1330871 26-MAY-18
Name: +RECO/dbm01/datafile/users.284.977121353
Tag: TAG20180526T063551

8 7 A 26-MAY-18 1330428 26-MAY-18
Name: +RECO/dbm01/datafile/users.292.977120961
Tag: TAG20180526T062919

5 7 A 26-MAY-18 1330190 26-MAY-18
Name: +RECO/dbm01/datafile/users.284.977120829
Tag: TAG20180526T062633

RMAN> list copy of controlfile;

List of Control File Copies
===========================

Key S Completion Time Ckp SCN Ckp Time
——- – ————— ———- —————
17 A 26-MAY-18 1330876 26-MAY-18
Name: +RECO/dbm01/controlfile/backup.283.977121353
Tag: TAG20180526T063551

14 A 26-MAY-18 1330434 26-MAY-18
Name: +RECO/dbm01/controlfile/backup.293.977120965
Tag: TAG20180526T062919

Step 5: Verify the RMAN Database Copy backup in ASM

[oracle@dm01db01 ~]$ asmcmd -p
ASMCMD [+] > lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 272154624 271558968 6479872 88359698 0 N DATA/
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/
MOUNTED NORMAL N 512 4096 4194304 45389568 45183784 540352 22321716 0 N RECO/

ASMCMD [+] > cd +RECO

ASMCMD [+RECO] > ls -l
Type Redund Striped Time Sys Name
Y DBM01/
ASMCMD [+RECO] > cd DBM01
ASMCMD [+RECO/DBM01] > ls -l
Type Redund Striped Time Sys Name
Y ARCHIVELOG/
Y AUTOBACKUP/
Y CONTROLFILE/
Y DATAFILE/
N snapcf_dbm01.f => +RECO/DBM01/CONTROLFILE/Backup.285.977120961
ASMCMD [+RECO/DBM01] > ls -l DATAFILE/
Type Redund Striped Time Sys Name
DATAFILE MIRROR COARSE MAY 26 06:00:00 Y SYSAUX.290.977121353
DATAFILE MIRROR COARSE MAY 26 06:00:00 Y SYSTEM.291.977121353
DATAFILE MIRROR COARSE MAY 26 06:00:00 Y UNDOTBS1.289.977121353
DATAFILE MIRROR COARSE MAY 26 06:00:00 Y UNDOTBS2.288.977121353
DATAFILE MIRROR COARSE MAY 26 06:00:00 Y UNDOTBS3.287.977121353
DATAFILE MIRROR COARSE MAY 26 06:00:00 Y UNDOTBS4.286.977121353
DATAFILE MIRROR COARSE MAY 26 06:00:00 Y USERS.284.977121353
ASMCMD [+RECO/DBM01] > ls -l CONTROLFILE/
Type Redund Striped Time Sys Name
CONTROLFILE HIGH FINE MAY 26 06:00:00 Y Backup.283.977121353
CONTROLFILE HIGH FINE MAY 26 06:00:00 Y Backup.285.977120961
CONTROLFILE HIGH FINE MAY 26 06:00:00 Y Backup.293.977120965

Step 6: Switch Database to RMAN backup copy. This command will switch the database from +DATA to +RECO ASM Disk Group.

[oracle@dm01db01 ~]$ srvctl stop database -d dbm01

[oracle@dm01db01 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sat May 26 07:22:06 2018

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup mount;
ORACLE instance started.

Total System Global Area 2.5655E+10 bytes
Fixed Size 2265224 bytes
Variable Size 4160753528 bytes
Database Buffers 2.1341E+10 bytes
Redo Buffers 151113728 bytes
Database mounted.

[oracle@dm01db01 ~]$ rman target /

Recovery Manager: Release 11.2.0.4.0 – Production on Sat May 26 07:23:09 2018

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

connected to target database: DBM01 (DBID=1180720008, not open)

RMAN> switch database to copy;

using target database control file instead of recovery catalog
datafile 1 switched to datafile copy “+RECO/dbm01/datafile/system.291.977121353”
datafile 2 switched to datafile copy “+RECO/dbm01/datafile/sysaux.290.977121353”
datafile 3 switched to datafile copy “+RECO/dbm01/datafile/undotbs1.289.977121353”
datafile 4 switched to datafile copy “+RECO/dbm01/datafile/undotbs2.288.977121353”
datafile 5 switched to datafile copy “+RECO/dbm01/datafile/undotbs3.287.977121353”
datafile 6 switched to datafile copy “+RECO/dbm01/datafile/undotbs4.286.977121353”
datafile 7 switched to datafile copy “+RECO/dbm01/datafile/users.284.977121353”

RMAN> recover database;

Starting recover at 26-MAY-18
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=991 instance=dbm011 device type=DISK

starting media recovery
media recovery complete, elapsed time: 00:00:02

Finished recover at 26-MAY-18

RMAN> alter database open resetlogs;

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of alter db command at 05/26/2018 07:25:06
ORA-01139: RESETLOGS option only valid after an incomplete database recovery

RMAN> alter database open;

database opened

[oracle@dm01db01 ~]$ srvctl stop database -d dbm01

[oracle@dm01db01 ~]$ srvctl start database -d dbm01

[oracle@dm01db01 ~]$ srvctl status database -d dbm01
Instance dbm011 is running on node dm01db01
Instance dbm012 is running on node dm01db02
Instance dbm013 is running on node dm01db03
Instance dbm014 is running on node dm01db04

[oracle@dm01db01 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sat May 26 07:28:11 2018

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> select name, open_mode,database_role from gv$database;

NAME OPEN_MODE DATABASE_ROLE
——— ——————– —————-
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY

Step 7: Move Temp and online redo log files

SQL> alter database tempfile ‘+DATAC1/dbm01/tempfile/temp.262.976375229’ drop;

Database altered.

SQL> alter tablespace TEMP add tempfile ‘+RECO’ SIZE 1024M;

Tablespace altered.

SQL> alter database add logfile member ‘+RECO’ to group 1;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 2;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 3;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 4;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 5;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 6;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 7;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 8;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 9;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 10;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 11;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 12;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 13;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 14;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 15;

Database altered.

SQL> alter database add logfile member ‘+RECO’ to group 16;

Database altered.

SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_1.257.976374733’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_2.258.976374735’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_7.267.976375073’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_8.268.976375075’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_5.269.976375079’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_6.270.976375083’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_3.271.976375085’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_4.272.976375087’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_9.274.976375205’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_10.275.976375209’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_11.276.976375211’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_12.277.976375215’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_13.278.976375217’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_14.279.976375219’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_15.280.976375223’;
SQL> alter database drop logfile member ‘+DATA/dbm01/onlinelog/group_16.281.976375225’;

Step 8: Move control file to +RECO Disk Group

[oracle@dm01db01 ~]$ srvctl stop database -d dbm01
[oracle@dm01db01 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sat May 26 08:53:35 2018

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup nomount;
ORACLE instance started.

Total System Global Area 2.5655E+10 bytes
Fixed Size 2265224 bytes
Variable Size 4429188984 bytes
Database Buffers 2.1072E+10 bytes
Redo Buffers 151113728 bytes
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
[oracle@dm01db01 ~]$ rman target /

Recovery Manager: Release 11.2.0.4.0 – Production on Sat May 26 08:53:59 2018

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

connected to target database: DBM01 (not mounted)

RMAN> restore controlfile to ‘+RECO’ from ‘+DATA/dbm01/controlfile/current.256.976374731’;

Starting restore at 26-MAY-18
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=969 instance=dbm011 device type=DISK

channel ORA_DISK_1: copied control file copy
Finished restore at 26-MAY-18

RMAN> exit

Recovery Manager complete.

[oracle@dm01db01 ~]$ . oraenv
ORACLE_SID = [dbm011] ? +ASM1
The Oracle base remains unchanged with value /u01/app/oracle

[oracle@dm01db01 ~]$ asmcmd -p

ASMCMD [+] > cd +RECO

ASMCMD [+RECO] > ls -l
Type Redund Striped Time Sys Name
Y DBM01/
ASMCMD [+RECO] > cd DBM01
ASMCMD [+RECO/DBM01] > ls -l
Type Redund Striped Time Sys Name
Y ARCHIVELOG/
Y AUTOBACKUP/
Y CHANGETRACKING/
Y CONTROLFILE/
Y DATAFILE/
Y ONLINELOG/
Y TEMPFILE/
N snapcf_dbm01.f => +RECO/DBM01/CONTROLFILE/Backup.285.977120961
ASMCMD [+RECO/DBM01] > cd CONTROLFILE/

ASMCMD [+RECO/DBM01/CONTROLFILE] > ls -l
Type Redund Striped Time Sys Name
CONTROLFILE HIGH FINE MAY 26 06:00:00 Y Backup.283.977121353
CONTROLFILE HIGH FINE MAY 26 08:00:00 Y Backup.285.977120961
CONTROLFILE HIGH FINE MAY 26 06:00:00 Y Backup.293.977120965
CONTROLFILE HIGH FINE MAY 26 08:00:00 Y Backup.321.977128799
CONTROLFILE HIGH FINE MAY 26 08:00:00 Y current.331.977129649

ASMCMD [+RECO/DBM01/CONTROLFILE] > pwd
+RECO/DBM01/CONTROLFILE

ASMCMD [+RECO/DBM01/CONTROLFILE] > exit

[oracle@dm01db01 ~]$ . oraenv
ORACLE_SID = [+ASM1] ? dbm011
The Oracle base remains unchanged with value /u01/app/oracle

[oracle@dm01db01 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sat May 26 08:55:09 2018

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> alter system set control_files=’+RECO/DBM01/CONTROLFILE/current.331.977129649′ scope=spfile sid=’*’;

System altered.

SQL> shutdown immediate;
ORA-01507: database not mounted

ORACLE instance shut down.
SQL> exit

[oracle@dm01db01 ~]$ srvctl start database -d dbm01

[oracle@dm01db01 ~]$ srvctl status database -d dbm01
Instance dbm011 is running on node dm01db01
Instance dbm012 is running on node dm01db02
Instance dbm013 is running on node dm01db03
Instance dbm014 is running on node dm01db04

Step 9: Move block change tracking file to +RECO Disk Group

SQL> select filename from v$block_change_tracking;

FILENAME
——————————————————————–
+DATA/dbm01/changetracking/ctf.282.976375227

SQL> alter database disable block change tracking;

Database altered.

SQL> alter database enable block change tracking using file ‘+RECO’;

Database altered.

SQL> select filename from v$block_change_tracking;

FILENAME
——————————————————————–
+RECO/dbm01/changetracking/ctf.319.977128195

Step 10: Move Flash Recovery Area to +RECO Disk Group

SQL> show parameter recover

NAME TYPE VALUE
———————————— ———– ——————————
db_recovery_file_dest string +DATA

SQL> alter system set db_recovery_file_dest=’+RECO’;

System altered.

SQL> show parameter db_recovery_file_dest

NAME TYPE VALUE
———————————— ———– ——————————
db_recovery_file_dest string +RECO

Step 11: Update OMF parameter to point to +RECO

SQL> show parameter online

NAME TYPE VALUE
———————————— ———– ——————————
db_create_online_log_dest_1 string +DATA

SQL> alter system set db_create_online_log_dest_1=’+RECO’;

System altered.

SQL> show parameter db_create_online_log_dest_1

NAME TYPE VALUE
———————————— ———– ——————————
db_create_online_log_dest_1 string +RECO

Step 12: Verify the entire database is moved to +RECO ASM Disk Group

[oracle@dm01db01 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sat May 26 08:57:57 2018

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> select name, open_mode,database_role from gv$database;

NAME OPEN_MODE DATABASE_ROLE
——— ——————– —————-
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY

SQL> set lines 200
SQL> set pages 200
SQL> select name from v$tempfile;

NAME
——————————————————-
+RECO/dbm01/tempfile/temp.297.977125145

SQL> select name from v$controlfile;

NAME
——————————————————-
+RECO/dbm01/controlfile/current.331.977129649

SQL> select name from v$datafile;

NAME
——————————————————–
+RECO/dbm01/datafile/system.291.977121353
+RECO/dbm01/datafile/sysaux.290.977121353
+RECO/dbm01/datafile/undotbs1.289.977121353
+RECO/dbm01/datafile/undotbs2.288.977121353
+RECO/dbm01/datafile/undotbs3.287.977121353
+RECO/dbm01/datafile/undotbs4.286.977121353
+RECO/dbm01/datafile/users.284.977121353

7 rows selected.

SQL> select member from v$logfile;

MEMBER
———————————————————
+RECO/dbm01/onlinelog/group_1.298.977127719
+RECO/dbm01/onlinelog/group_2.299.977125295
+RECO/dbm01/onlinelog/group_3.300.977125299
+RECO/dbm01/onlinelog/group_4.301.977125309
+RECO/dbm01/onlinelog/group_5.302.977125313
+RECO/dbm01/onlinelog/group_6.303.977125317
+RECO/dbm01/onlinelog/group_7.304.977125321
+RECO/dbm01/onlinelog/group_8.305.977125327
+RECO/dbm01/onlinelog/group_9.306.977125329
+RECO/dbm01/onlinelog/group_10.307.977125333
+RECO/dbm01/onlinelog/group_11.308.977125335
+RECO/dbm01/onlinelog/group_12.309.977125339
+RECO/dbm01/onlinelog/group_13.310.977125343
+RECO/dbm01/onlinelog/group_14.311.977125345
+RECO/dbm01/onlinelog/group_15.312.977125349
+RECO/dbm01/onlinelog/group_16.313.977125351

16 rows selected.

Conclusion

In this article we have learned how to move a Database from +DATA ASM Disk Group to +RECO Disk Group. Using RMAN along with FRA makes it easy to move a database from one location to another.

September 3, 2018

Extend or Increase root File System Size on Exadata

When Exadata database machine is installed by Oracle ACS the root file system size is set to 30GB. This space may not be sufficient for storing large files, logfiles, patches and so on and it can be filled very quickly. So you must consider increasing the root file system to avoid space issues. The root file system is built on volume group which makes it easy to resize the logical volume on which the root file system is mounted.

Root file system is created on two system partitions LVDbSys1 and LVDbSys2 and both system partitions must be size equally at the same time. Only one system partition is active at any time and other is inactive.

In this article, we will demonstrate how you can extend/increase the root file system size on Exadata Compute node. This activity can be done online without any downtime if the file system feature supports it.

Steps to extend/increase the root file system on Exadata Compute node

Step 1: Get the current root file system size and utilization. Here we can see that the root file system was expanded early to 60GB and currently it is 100% used.

[root@dm01db01 /]# df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VGExaDb-LVDbSys1
59G 57G 0 100% /

Step 2: Get the logical volumne details

[root@dm01db01 /]# lvs -o lv_name,lv_path,vg_name,lv_size
LV Path VG LSize
LVDbOra1 /dev/VGExaDb/LVDbOra1 VGExaDb 200.00g
LVDbSwap1 /dev/VGExaDb/LVDbSwap1 VGExaDb 24.00g
LVDbSys1 /dev/VGExaDb/LVDbSys1 VGExaDb 60.00g
LVDbSys2 /dev/VGExaDb/LVDbSys2 VGExaDb 60.00g
LVDoNotRemoveOrUse /dev/VGExaDb/LVDoNotRemoveOrUse VGExaDb 1.00g

Step 3: Check to make sure that root file system can be resized online. Execute the following to determine it. If you get an output the file system can be resized online

[root@dm01db01 /]# tune2fs -l /dev/mapper/VGExaDb-LVDbSys1 | grep resize_inode
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize

[root@dm01db01 /]# dcli -g ~/dbs_group -l root ‘tune2fs -l /dev/mapper/VGExaDb-LVDbSys1 | grep resize_inode’
dm01db01: Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
dm01db02: Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
dm01db03: Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
dm01db04: Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize

Step 4: Get the current active partition information. Here the current active partition is LVDbSys1

[root@dm01db01 ~]# imageinfo

Kernel version: 4.1.12-94.7.8.el6uek.x86_64 #2 SMP Thu Jan 11 20:41:01 PST 2018 x86_64
Image kernel version: 4.1.12-94.7.8.el6uek
Image version: 12.2.1.1.6.180125.1
Image activated: 2018-04-13 22:11:49 -0500
Image status: success
System partition on device: /dev/mapper/VGExaDb-LVDbSys1

Step 5: Get the free space available in the Volume Group. Currently we have around 1.3TB free space available. So we can easily increase the root file system.

[root@dm01db01 /]# vgdisplay -s
“VGExaDb” 1.63 TiB [345.00 GiB used / 1.30 TiB free]

Step 6: Using lvextend command increase the both logical volumes. In our case, we are increasing the root file system by 30GB to make 90GB total size.

[root@dm01db01 /]# lvextend -L +30G /dev/VGExaDb/LVDbSys1
Size of logical volume VGExaDb/LVDbSys1 changed from 60.00 GiB (15360 extents) to 90.00 GiB (23040 extents).
Logical volume LVDbSys1 successfully resized.

[root@dm01db01 /]# lvextend -L +30G /dev/VGExaDb/LVDbSys2
Size of logical volume VGExaDb/LVDbSys2 changed from 60.00 GiB (15360 extents) to 90.00 GiB (23040 extents).
Logical volume LVDbSys2 successfully resized.

Step 7: Using resize2fs command resize the file system as follows

[root@dm01db01 /]# resize2fs /dev/VGExaDb/LVDbSys1
resize2fs 1.43-WIP (20-Jun-2013)
Filesystem at /dev/VGExaDb/LVDbSys1 is mounted on /; on-line resizing required
old_desc_blocks = 4, new_desc_blocks = 6
The filesystem on /dev/VGExaDb/LVDbSys1 is now 23592960 blocks long.

[root@dm01db01 /]# e2fsck -f /dev/VGExaDb/LVDbSys1
e2fsck 1.43-WIP (20-Jun-2013)
/dev/VGExaDb/LVDbSys1 is mounted.
e2fsck: Cannot continue, aborting.

[root@dm01db01 /]# resize2fs /dev/VGExaDb/LVDbSys2
resize2fs 1.43-WIP (20-Jun-2013)
Please run ‘e2fsck -f /dev/VGExaDb/LVDbSys2’ first.

[root@dm01db01 /]# e2fsck -f /dev/VGExaDb/LVDbSys2
e2fsck 1.43-WIP (20-Jun-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/VGExaDb/LVDbSys2: 167407/3932160 files (0.1% non-contiguous), 4710754/15728640 blocks

[root@dm01db01 /]# resize2fs /dev/VGExaDb/LVDbSys2
resize2fs 1.43-WIP (20-Jun-2013)
Resizing the filesystem on /dev/VGExaDb/LVDbSys2 to 23592960 (4k) blocks.
The filesystem on /dev/VGExaDb/LVDbSys2 is now 23592960 blocks long.

Note: You can’t run the e2fsck for the active paritition LVDbSys1. You run the e2fsck for inactive partition LVDbSys2 first before resizing it.

Step 8: Verify the new file system size

[root@dm01db01 /]# df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VGExaDb-LVDbSys1
89G 57G 29G 67% /

Repeat the steps above on all the compute nodes in the Exadata Rack.

Conclusion

In this article we have learned how to extend/increase the root file system on Exadata Compute node online without any outage. Root file system is created on two system partitions LVDbSys1 and LVDbSys2 and both system partitions must be size equally at the same time. Only one system partition is active at any time and other is inactive.

August 15, 2018

Rename Oracle ASM Disk Group On Exadata

When Oracle ACS build Exadata Database Machine, they use the OEDA file that you sent them over for Exadata Install. The Exadata is built with default ASM Disk Group name DATAC1, RECOC1 & DBFS_DG. If you want to rename the DATAC1 and RECOC1 to something different to match your Organization standards you can do that by using the Oracle renamedg utility. The number Database version required to rename an ASM Disk Group is 11.2.

In this article we will demonstrate how to rename ASM Disk Group on Exadata Database Machine running Oracle Database 11.2

Here we want to change the following ASM Disk Group Names:
DATAC1 to DATA
RECOC1 to RECO

Steps to rename ASM Disk Group

Get the Database version

ORACLE_SID = [+ASM1] ? dbm011
The Oracle base remains unchanged with value /u01/app/oracle

[oracle@dm01db01 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Thu May 24 16:36:34 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> select * from v$version;

BANNER
——————————————————————————–
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
PL/SQL Release 11.2.0.4.0 – Production
CORE 11.2.0.4.0 Production
TNS for Linux: Version 11.2.0.4.0 – Production
NLSRTL Version 11.2.0.4.0 – Production

Connect to asmcmd and make a note of the Disk Group Names

[oracle@dm01db01 ~]$ . oraenv

ORACLE_SID = [oracle] ? +ASM1
The Oracle base has been set to /u01/app/oracle

[oracle@dm01db01 ~]$ asmcmd -p

ASMCMD [+] > lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 272154624 271558968 6479872 88359698 0 N DATAC1/
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/
MOUNTED NORMAL N 512 4096 4194304 45389568 45386648 540352 22423148 0 N RECOC1/

Check the versions

ASMCMD [+] > lsct
DB_Name Status Software_Version Compatible_version Instance_Name Disk_Group
+ASM CONNECTED 11.2.0.4.0 11.2.0.4.0 +ASM1 DBFS_DG
DBM01 CONNECTED 11.2.0.4.0 11.2.0.4.0 dbm011 DATAC1

Check the database status

[oracle@dm01db01 ~]$ srvctl status database -d dbm01
Instance dbm011 is running on node dm01db01
Instance dbm012 is running on node dm01db02
Instance dbm013 is running on node dm01db03
Instance dbm014 is running on node dm01db04

Make a note of the control files, Datafiles, Redo logfiles before stopping the database.

SQL> select name from v$controlfile;
SQL> select name from v$datafile;
SQL> select member from v$logfile;
SQL> select * from v$block_change_tracking;

Stop database database

[oracle@dm01db01 ~]$ srvctl stop database -d dbm01

[oracle@dm01db01 ~]$ srvctl status database -d dbm01
Instance dbm011 is not running on node dm01db01
Instance dbm012 is not running on node dm01db02
Instance dbm013 is not running on node dm01db03
Instance dbm014 is not running on node dm01db04

Umount the ASM disk group(s) that you want to rename. Connect to ASM command prompt and umount the disk group. umount the disk group from all nodes.

ASMCMD [+] > umount DATAC1

ASMCMD [+] > umount RECOC1

ASMCMD [+] > lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/

Note: If you don’t stop the databases using ASM disk group you will get the following error message:

ASMCMD [+] > umount DATAC1
ORA-15032: not all alterations performed
ORA-15027: active use of diskgroup “DATAC1” precludes its dismount (DBD ERROR: OCIStmtExecute)

*** Repeat the above steps on all the remaining nodes in the Cluster***

[oracle@dm01db01 ~]$ ssh dm01db02
Last login: Thu May 17 15:23:31 2018 from dm01db01

[oracle@dm01db02 ~]$ . oraenv
ORACLE_SID = [oracle] ? +ASM2
The Oracle base has been set to /u01/app/oracle

[oracle@dm01db02 ~]$ asmcmd lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 272154624 271558968 6479872 88359698 0 N DATAC1/
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/
MOUNTED NORMAL N 512 4096 4194304 45389568 45385040 540352 22422344 0 N RECOC1/

[oracle@dm01db02 ~]$ asmcmd umount DATAC1

[oracle@dm01db02 ~]$ asmcmd umount RECOC1

[oracle@dm01db02 ~]$ asmcmd lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/

[oracle@dm01db01 ~]$ ssh dm01db03
Last login: Thu May 17 15:23:31 2018 from dm01db01

[oracle@dm01db03 ~]$ . oraenv
ORACLE_SID = [oracle] ? +ASM3
The Oracle base has been set to /u01/app/oracle

[oracle@dm01db03 ~]$ asmcmd umount DATAC1

[oracle@dm01db03 ~]$ asmcmd umount RECOC1

[oracle@dm01db03 ~]$ asmcmd lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/

[oracle@dm01db01 ~]$ ssh dm01db04
Last login: Thu May 17 15:23:31 2018 from dm01db01

[oracle@dm01db04 ~]$ . oraenv
ORACLE_SID = [oracle] ? +ASM4
The Oracle base has been set to /u01/app/oracle

[oracle@dm01db04 ~]$ asmcmd umount DATAC1

[oracle@dm01db04 ~]$ asmcmd umount RECOC1

[oracle@dm01db04 ~]$ asmcmd lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/

Verify that renamedg is in PATH

[oracle@dm01db01 ~]$ which renamedg
/u01/app/11.2.0.4/grid/bin/renamedg

As owner of the Grid Infrastruture software execute the renamdg command. Here the owner of GI home is ‘oracle’ user. First I am renaming DATAC1 disk group to DATA

[oracle@dm01db01 ~]$ renamedg phase=both dgname=DATAC1 newdgname=DATA verbose=true

NOTE: No asm libraries found in the system
Parsing parameters..
Parameters in effect:

Old DG name : DATAC1
New DG name : DATA
Phases :
Phase 1
Phase 2
Discovery str : (null)
Clean : TRUE
Raw only : TRUE
renamedg operation: phase=both dgname=DATAC1 newdgname=DATA verbose=true
Executing phase 1
Discovering the group
Performing discovery with string:
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_02_dm01cel01 with disk number:74 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_11_dm01cel01 with disk number:83 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_07_dm01cel01 with disk number:79 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_04_dm01cel01 with disk number:76 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_05_dm01cel01 with disk number:77 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_10_dm01cel01 with disk number:82 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_06_dm01cel01 with disk number:78 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_03_dm01cel01 with disk number:75 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_00_dm01cel01 with disk number:72 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_08_dm01cel01 with disk number:80 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_01_dm01cel01 with disk number:73 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_09_dm01cel01 with disk number:81 and timestamp (33068591 612262912)
…
…
…
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_09_dm01cel07 with disk number:69 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_03_dm01cel07 with disk number:63 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_06_dm01cel07 with disk number:66 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_08_dm01cel07 with disk number:68 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_04_dm01cel07 with disk number:64 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_07_dm01cel07 with disk number:67 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_01_dm01cel07 with disk number:61 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_05_dm01cel07 with disk number:65 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_02_dm01cel07 with disk number:62 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_00_dm01cel07 with disk number:60 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_11_dm01cel07 with disk number:71 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_10_dm01cel07 with disk number:70 and timestamp (33068591 612262912)
Checking for hearbeat…
Re-discovering the group
Performing discovery with string:
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_02_dm01cel01 with disk number:74 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_11_dm01cel01 with disk number:83 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_07_dm01cel01 with disk number:79 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_04_dm01cel01 with disk number:76 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_05_dm01cel01 with disk number:77 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_10_dm01cel01 with disk number:82 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_06_dm01cel01 with disk number:78 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_03_dm01cel01 with disk number:75 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_00_dm01cel01 with disk number:72 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_08_dm01cel01 with disk number:80 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_01_dm01cel01 with disk number:73 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.9;192.168.10.10/DATAC1_CD_09_dm01cel01 with disk number:81 and timestamp (33068591 612262912)
…
…
…
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_09_dm01cel07 with disk number:69 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_03_dm01cel07 with disk number:63 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_06_dm01cel07 with disk number:66 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_08_dm01cel07 with disk number:68 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_04_dm01cel07 with disk number:64 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_07_dm01cel07 with disk number:67 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_01_dm01cel07 with disk number:61 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_05_dm01cel07 with disk number:65 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_02_dm01cel07 with disk number:62 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_00_dm01cel07 with disk number:60 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_11_dm01cel07 with disk number:71 and timestamp (33068591 612262912)
Identified disk OSS::o/192.168.10.21;192.168.10.22/DATAC1_CD_10_dm01cel07 with disk number:70 and timestamp (33068591 612262912)
Checking if the diskgroup is mounted or used by CSS
Checking disk number:74
Checking disk number:83
Checking disk number:79
Checking disk number:76
Checking disk number:77
Checking disk number:82
Checking disk number:78
Checking disk number:75
Checking disk number:72
Checking disk number:80
Checking disk number:73
Checking disk number:81
Checking disk number:69
Checking disk number:63
Checking disk number:66
Checking disk number:68
Checking disk number:64
Checking disk number:67
Checking disk number:61
Checking disk number:65
Checking disk number:62
Checking disk number:60
…
…
Generating configuration file..
Completed phase 1
Executing phase 2
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_02_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_11_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_07_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_04_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_05_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_10_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_06_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_03_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_00_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_08_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/DATAC1_CD_01_dm01cel01
Modifying the header
…
…
Modifying the header
Completed phase 2
Terminating kgfd context 0x7f9d346240a0

Now rename RECOC1 ASM disk group to RECO using renamdg command

[oracle@dm01db01 ~]$ renamedg phase=both dgname=RECOC1 newdgname=RECO verbose=true

NOTE: No asm libraries found in the system
Parsing parameters..
Parameters in effect:

Old DG name : RECOC1
New DG name : RECO
Phases :
Phase 1
Phase 2
Discovery str : (null)
Clean : TRUE
Raw only : TRUE
renamedg operation: phase=both dgname=RECOC1 newdgname=RECO verbose=true
Executing phase 1
Discovering the group
Performing discovery with string:
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_03_dm01cel01 with disk number:75 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_04_dm01cel01 with disk number:76 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_05_dm01cel01 with disk number:77 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_00_dm01cel01 with disk number:72 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_10_dm01cel01 with disk number:82 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_07_dm01cel01 with disk number:79 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_02_dm01cel01 with disk number:74 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_01_dm01cel01 with disk number:73 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_11_dm01cel01 with disk number:83 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_08_dm01cel01 with disk number:80 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_09_dm01cel01 with disk number:81 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_06_dm01cel01 with disk number:78 and timestamp (33068591 628813824)
…
…
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_01_dm01cel07 with disk number:61 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_08_dm01cel07 with disk number:68 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_06_dm01cel07 with disk number:66 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_11_dm01cel07 with disk number:71 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_10_dm01cel07 with disk number:70 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_05_dm01cel07 with disk number:65 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_00_dm01cel07 with disk number:60 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_03_dm01cel07 with disk number:63 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_09_dm01cel07 with disk number:69 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_07_dm01cel07 with disk number:67 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_02_dm01cel07 with disk number:62 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_04_dm01cel07 with disk number:64 and timestamp (33068591 628813824)
Checking for hearbeat…
Re-discovering the group
Performing discovery with string:
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_03_dm01cel01 with disk number:75 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_04_dm01cel01 with disk number:76 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_05_dm01cel01 with disk number:77 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_00_dm01cel01 with disk number:72 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_10_dm01cel01 with disk number:82 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_07_dm01cel01 with disk number:79 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_02_dm01cel01 with disk number:74 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_01_dm01cel01 with disk number:73 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_11_dm01cel01 with disk number:83 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_08_dm01cel01 with disk number:80 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_09_dm01cel01 with disk number:81 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.9;192.168.10.10/RECOC1_CD_06_dm01cel01 with disk number:78 and timestamp (33068591 628813824)
…
…
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_01_dm01cel07 with disk number:61 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_08_dm01cel07 with disk number:68 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_06_dm01cel07 with disk number:66 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_11_dm01cel07 with disk number:71 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_10_dm01cel07 with disk number:70 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_05_dm01cel07 with disk number:65 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_00_dm01cel07 with disk number:60 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_03_dm01cel07 with disk number:63 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_09_dm01cel07 with disk number:69 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_07_dm01cel07 with disk number:67 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_02_dm01cel07 with disk number:62 and timestamp (33068591 628813824)
Identified disk OSS::o/192.168.10.21;192.168.10.22/RECOC1_CD_04_dm01cel07 with disk number:64 and timestamp (33068591 628813824)
…
…
Checking if the diskgroup is mounted or used by CSS
Checking disk number:75
Checking disk number:76
Checking disk number:77
Checking disk number:72
Checking disk number:82
Checking disk number:79
Checking disk number:74
Checking disk number:73
Checking disk number:83
Checking disk number:80
Checking disk number:81
Checking disk number:78
Checking disk number:61
Checking disk number:68
Checking disk number:66
Checking disk number:71
Checking disk number:70
Checking disk number:65
Checking disk number:60
Checking disk number:63
Checking disk number:69
Checking disk number:67
Checking disk number:62
Checking disk number:64
Checking disk number:49
…
…
Generating configuration file..
Completed phase 1
Executing phase 2
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_03_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_04_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_05_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_00_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_10_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_07_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_02_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_01_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_11_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_08_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_09_dm01cel01
Modifying the header
Looking for o/192.168.10.9;192.168.10.10/RECOC1_CD_06_dm01cel01
Modifying the header
…
…
Modifying the header
Completed phase 2
Terminating kgfd context 0x7f8d42f6c0a0

Mount the DATA and RECO ASM disk groups on all the nodes.

[oracle@dm01db01 ~]$ asmcmd -p

ASMCMD [+] > lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/

ASMCMD [+] > mount DATA

ASMCMD [+] > mount RECO

ASMCMD [+] > lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 272154624 271558968 6479872 88359698 0 N DATA/
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/
MOUNTED NORMAL N 512 4096 4194304 45389568 45385040 540352 22422344 0 N RECO/

*** Repeat the above steps on all the remaning compute nodes in the Cluster***

Note:

renamedg utility cannot rename the associated ASM/Grid disk disk name
renamedg utility cannot rename/update the control files, datafiles, redo log files and any other files that reference ASM DG for all databases

Steps to rename control files, datafiles, redo log files and other database files

Update SPFILE location

[oracle@dm01db01 ~]$ cd $ORACLE_HOME/dbs

[oracle@dm01db01 dbs]$ cat initdbm011.ora
SPFILE=’+DATAC1/dbm01/spfiledbm01.ora’

[oracle@dm01db01 dbs]$ vi initdbm011.ora

[oracle@dm01db01 dbs]$ cat initdbm011.ora
SPFILE=’+DATA/dbm01/spfiledbm01.ora’

[oracle@dm01db01 dbs]$ scp initdbm011.ora dm01db02:/u01/app/oracle/product/11.2.0.4/dbhome/dbs/initdbm012.ora
initdbm011.ora 100% 42 0.0KB/s 00:00

[oracle@dm01db01 dbs]$ scp initdbm011.ora dm01db03:/u01/app/oracle/product/11.2.0.4/dbhome/dbs/initdbm013.ora
initdbm011.ora 100% 42 0.0KB/s 00:00

[oracle@dm01db01 dbs]$ scp initdbm011.ora dm01db04:/u01/app/oracle/product/11.2.0.4/dbhome/dbs/initdbm014.ora
initdbm011.ora 100% 42 0.0KB/s 00:00

Update control file location

[oracle@dm01db01 dbs]$ . oraenv
ORACLE_SID = [dbm011] ?
The Oracle base remains unchanged with value /u01/app/oracle

[oracle@dm01db01 dbs]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Fri May 25 10:17:49 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to an idle instance.

SQL> startup nomount;
ORACLE instance started.

Total System Global Area 2.5655E+10 bytes
Fixed Size 2265224 bytes
Variable Size 4160753528 bytes
Database Buffers 2.1341E+10 bytes
Redo Buffers 151113728 bytes

SQL> show parameter control_files

NAME TYPE VALUE
———————————— ———– ——————————
control_files string +DATAC1/dbm01/controlfile/current.256.976374731

SQL> alter system set control_files=’+DATA/dbm01/controlfile/current.256.976374731′ scope=spfile;

System altered.

SQL> shutdown immediate;
ORA-01507: database not mounted

ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.

Total System Global Area 2.5655E+10 bytes
Fixed Size 2265224 bytes
Variable Size 4160753528 bytes
Database Buffers 2.1341E+10 bytes
Redo Buffers 151113728 bytes
Database mounted.

SQL> select name from v$controlfile;

NAME
——————————————————————————–
+DATA/dbm01/controlfile/current.256.976374731

Update datafile and redo log file locations

SQL> select name from v$datafile;

NAME
——————————————————————————–
+DATAC1/dbm01/datafile/system.259.976374739
+DATAC1/dbm01/datafile/sysaux.260.976374743
+DATAC1/dbm01/datafile/undotbs1.261.976374745
+DATAC1/dbm01/datafile/undotbs2.263.976374753
+DATAC1/dbm01/datafile/undotbs3.264.976374755
+DATAC1/dbm01/datafile/undotbs4.265.976374757
+DATAC1/dbm01/datafile/users.266.976374757

7 rows selected.

SQL> select member from v$logfile;

MEMBER
——————————————————————————–
+DATAC1/dbm01/onlinelog/group_1.257.976374733
+DATAC1/dbm01/onlinelog/group_2.258.976374735
+DATAC1/dbm01/onlinelog/group_7.267.976375073
+DATAC1/dbm01/onlinelog/group_8.268.976375075
+DATAC1/dbm01/onlinelog/group_5.269.976375079
+DATAC1/dbm01/onlinelog/group_6.270.976375083
+DATAC1/dbm01/onlinelog/group_3.271.976375085
+DATAC1/dbm01/onlinelog/group_4.272.976375087
+DATAC1/dbm01/onlinelog/group_9.274.976375205
+DATAC1/dbm01/onlinelog/group_10.275.976375209
+DATAC1/dbm01/onlinelog/group_11.276.976375211
+DATAC1/dbm01/onlinelog/group_12.277.976375215
+DATAC1/dbm01/onlinelog/group_13.278.976375217
+DATAC1/dbm01/onlinelog/group_14.279.976375219
+DATAC1/dbm01/onlinelog/group_15.280.976375223
+DATAC1/dbm01/onlinelog/group_16.281.976375225

16 rows selected.

SQL> alter database rename file ‘+DATAC1/dbm01/datafile/system.259.976374739’ to ‘+DATA/dbm01/datafile/system.259.976374739’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/datafile/sysaux.260.976374743’ to ‘+DATA/dbm01/datafile/sysaux.260.976374743’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/datafile/undotbs1.261.976374745’ to ‘+DATA/dbm01/datafile/undotbs1.261.976374745’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/datafile/undotbs2.263.976374753’ to ‘+DATA/dbm01/datafile/undotbs2.263.976374753’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/datafile/undotbs3.264.976374755’ to ‘+DATA/dbm01/datafile/undotbs3.264.976374755’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/datafile/undotbs4.265.976374757’ to ‘+DATA/dbm01/datafile/undotbs4.265.976374757’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/datafile/users.266.976374757’ to ‘+DATA/dbm01/datafile/users.266.976374757’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_1.257.976374733’ to ‘+DATA/dbm01/onlinelog/group_1.257.976374733’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_2.258.976374735’ to ‘+DATA/dbm01/onlinelog/group_2.258.976374735’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_7.267.976375073’ to ‘+DATA/dbm01/onlinelog/group_7.267.976375073’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_8.268.976375075’ to ‘+DATA/dbm01/onlinelog/group_8.268.976375075’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_5.269.976375079’ to ‘+DATA/dbm01/onlinelog/group_5.269.976375079’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_6.270.976375083’ to ‘+DATA/dbm01/onlinelog/group_6.270.976375083’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_3.271.976375085’ to ‘+DATA/dbm01/onlinelog/group_3.271.976375085’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_4.272.976375087’ to ‘+DATA/dbm01/onlinelog/group_4.272.976375087’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_9.274.976375205’ to ‘+DATA/dbm01/onlinelog/group_9.274.976375205’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_10.275.976375209’ to ‘+DATA/dbm01/onlinelog/group_10.275.976375209’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_11.276.976375211’ to ‘+DATA/dbm01/onlinelog/group_11.276.976375211’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_12.277.976375215’ to ‘+DATA/dbm01/onlinelog/group_12.277.976375215’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_13.278.976375217’ to ‘+DATA/dbm01/onlinelog/group_13.278.976375217’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_14.279.976375219’ to ‘+DATA/dbm01/onlinelog/group_14.279.976375219’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_15.280.976375223’ to ‘+DATA/dbm01/onlinelog/group_15.280.976375223’;

Database altered.

SQL> alter database rename file ‘+DATAC1/dbm01/onlinelog/group_16.281.976375225’ to ‘+DATA/dbm01/onlinelog/group_16.281.976375225’;

Database altered.

Verify the datafiles and redo log files names

SQL> select name from v$datafile;

NAME
——————————————————————————–
+DATA/dbm01/datafile/system.259.976374739
+DATA/dbm01/datafile/sysaux.260.976374743
+DATA/dbm01/datafile/undotbs1.261.976374745
+DATA/dbm01/datafile/undotbs2.263.976374753
+DATA/dbm01/datafile/undotbs3.264.976374755
+DATA/dbm01/datafile/undotbs4.265.976374757
+DATA/dbm01/datafile/users.266.976374757

7 rows selected.

SQL> select member from v$logfile;

MEMBER
——————————————————————————–
+DATA/dbm01/onlinelog/group_1.257.976374733
+DATA/dbm01/onlinelog/group_2.258.976374735
+DATA/dbm01/onlinelog/group_7.267.976375073
+DATA/dbm01/onlinelog/group_8.268.976375075
+DATA/dbm01/onlinelog/group_5.269.976375079
+DATA/dbm01/onlinelog/group_6.270.976375083
+DATA/dbm01/onlinelog/group_3.271.976375085
+DATA/dbm01/onlinelog/group_4.272.976375087
+DATA/dbm01/onlinelog/group_9.274.976375205
+DATA/dbm01/onlinelog/group_10.275.976375209
+DATA/dbm01/onlinelog/group_11.276.976375211
+DATA/dbm01/onlinelog/group_12.277.976375215
+DATA/dbm01/onlinelog/group_13.278.976375217
+DATA/dbm01/onlinelog/group_14.279.976375219
+DATA/dbm01/onlinelog/group_15.280.976375223
+DATA/dbm01/onlinelog/group_16.281.976375225

16 rows selected.

Update block change tracking file location

SQL> alter database rename file ‘+DATAC1/dbm01/changetracking/ctf.282.976375227’ to ‘+DATA/dbm01/changetracking/ctf.282.976375227’;

Database altered.

SQL> select * from v$block_change_tracking;

STATUS
———-
FILENAME
——————————————————————————–
BYTES
———-
ENABLED
+DATA/dbm01/changetracking/ctf.282.976375227
11599872

Update OMF related parameters

SQL> show parameter db_create_online_log_dest_1

NAME TYPE VALUE
———————————— ———– ——————————
db_create_online_log_dest_1 string +DATAC1

SQL> alter system set db_create_online_log_dest_1=’+DATA’;

System altered.

SQL> show parameter db_create_online_log_dest_1

NAME TYPE VALUE
———————————— ———– ——————————
db_create_online_log_dest_1 string +DATA

Update Fast Recovery Area location

SQL> show parameter db_recovery_file_dest

NAME TYPE VALUE
———————————— ———– ——————————
db_recovery_file_dest string +RECOC1
db_recovery_file_dest_size big integer 20425000M

SQL> alter system set db_recovery_file_dest=’+RECO’;

System altered.

SQL> show parameter db_recovery_file_dest

NAME TYPE VALUE
———————————— ———– ——————————
db_recovery_file_dest string +RECO
db_recovery_file_dest_size big integer 20425000M

Shutdown the database

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> exit

Update the database configuration

[oracle@dm01db01 dbs]$ srvctl config database -d dbm01
Database unique name: dbm01
Database name: dbm01
Oracle home: /u01/app/oracle/product/11.2.0.4/dbhome
Oracle user: oracle
Spfile: +DATAC1/dbm01/spfiledbm01.ora
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools: dbm01
Database instances: dbm011,dbm012,dbm013,dbm014
Disk Groups: DATAC1,RECOC1,DATA
Mount point paths:
Services:
Type: RAC
Database is administrator managed

[oracle@dm01db01 dbs]$ srvctl modify database -p +DATA/dbm01/spfiledbm01.ora -a DATA,RECO -d dbm01

[oracle@dm01db01 dbs]$ srvctl config database -d dbm01
Database unique name: dbm01
Database name: dbm01
Oracle home: /u01/app/oracle/product/11.2.0.4/dbhome
Oracle user: oracle
Spfile: +DATA/dbm01/spfiledbm01.ora
Domain:
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Server pools: dbm01
Database instances: dbm011,dbm012,dbm013,dbm014
Disk Groups: DATA,RECO
Mount point paths:
Services:
Type: RAC
Database is administrator managed

Start the database and verify

[oracle@dm01db01 dbs]$ srvctl start database -d dbm01

[oracle@dm01db01 dbs]$ srvctl status database -d dbm01
Instance dbm011 is running on node dm01db01
Instance dbm012 is running on node dm01db02
Instance dbm013 is running on node dm01db03
Instance dbm014 is running on node dm01db04

[oracle@dm01db01 dbs]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Fri May 25 10:40:34 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> select name, open_mode,database_role from gv$database;

NAME OPEN_MODE DATABASE_ROLE
——— ——————– —————-
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY
DBM01 READ WRITE PRIMARY

ORACLE_SID = [+ASM1] ? dbm011
The Oracle base remains unchanged with value /u01/app/oracle

[oracle@dm01db01 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Thu May 24 16:36:34 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> select * from v$version;

BANNER
——————————————————————————–
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production
PL/SQL Release 11.2.0.4.0 – Production
CORE 11.2.0.4.0 Production
TNS for Linux: Version 11.2.0.4.0 – Production
NLSRTL Version 11.2.0.4.0 – Production

[oracle@dm01db01 ~]$ . oraenv

ORACLE_SID = [oracle] ? +ASM1
The Oracle base has been set to /u01/app/oracle

[oracle@dm01db01 ~]$ asmcmd -p

ASMCMD [+] > lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED HIGH N 512 4096 4194304 272154624 271558968 6479872 88359698 0 N DATAC1/
MOUNTED HIGH N 512 4096 4194304 2404640 2402468 68704 777921 0 Y DBFS_DG/
MOUNTED NORMAL N 512 4096 4194304 45389568 45386648 540352 22423148 0 N RECOC1/

ASMCMD [+] > lsct
DB_Name Status Software_Version Compatible_version Instance_Name Disk_Group
+ASM CONNECTED 11.2.0.4.0 11.2.0.4.0 +ASM1 DBFS_DG
DBM01 CONNECTED 11.2.0.4.0 11.2.0.4.0 dbm011 DATAC1

[oracle@dm01db01 ~]$ srvctl status database -d dbm01
Instance dbm011 is running on node dm01db01
Instance dbm012 is running on node dm01db02
Instance dbm013 is running on node dm01db03
Instance dbm014 is running on node dm01db04

Conclusion

In this article we have learned how to rename an ASM Disk group on Exadata running Oracle Database 11.2. Starting with Oracle Database 11.2 you can use the renamedg command to rename an ASM Disk Group. renamedg utility cannot rename the associated ASM/Grid disk disk name. Also renamedg cannot rename/update the control files, datafiles, redo log files and any other files that reference ASM DG for all databases. You must update database files manually after renaming ASM disk groups.

June 5, 2018

Exadata Setup SSH Equivalence

You want to execute Operating System or Exadata commands on multiple Exadata Compute nodes and Storage Cell in parallel. To accomplish this you must setup passwordless SSH across compute nodes and storage cells.

If SSH equivalence is NOT setup and you execute the dcli command you will see the follow messages. This mean the SSH equivalence is not configured.

[root@dm01db01 ~]# dcli -g dbs_group -l root ‘uptime’
The authenticity of host ‘dm01db03 (10.10.10.195)’ can’t be established.
RSA key fingerprint is 40:81:3c:6d:ef:e7:1f:d7:a0:df:eb:f5:ea:92:a5:db.
Are you sure you want to continue connecting (yes/no)? The authenticity of host ‘dm01db05 (10.10.10.197)’ can’t be established.
RSA key fingerprint is 1b:95:47:0b:92:b4:13:9f:55:b7:a3:2a:56:27:9f:1c.
Are you sure you want to continue connecting (yes/no)? The authenticity of host ‘dm01db02 (10.10.10.194)’ can’t be established.
RSA key fingerprint is e1:0d:90:46:16:88:74:01:02:5a:11:90:63:b1:6b:1c.
Are you sure you want to continue connecting (yes/no)? The authenticity of host ‘dm01db01 (10.10.10.193)’ can’t be established.
RSA key fingerprint is 2b:6f:43:4b:86:29:bb:ed:a6:03:c5:34:75:cf:45:34.
Are you sure you want to continue connecting (yes/no)? The authenticity of host ‘dm01db04 (10.10.10.196)’ can’t be established.
RSA key fingerprint is 44:a7:ad:65:c3:1c:fb:0b:0b:28:2c:b6:a5:f3:59:99.
Are you sure you want to continue connecting (yes/no)? The authenticity of host ‘dm01db07 (10.10.10.199)’ can’t be established.
RSA key fingerprint is 25:5f:9a:e6:a4:7a:13:ba:e2:e7:7d:2e:79:53:49:2b.
Are you sure you want to continue connecting (yes/no)? root@dm01db06’s password: root@dm01db08’s password:

In this article we will demonstrate how to setup SSH equivalence on Exadata Database Machine.

Steps to Setup SSH Equivalence

1. Create the following files if doesn’t exist

[root@dm01db08 ~]# cat dbs_group
dm01db01
dm01db02
dm01db03
dm01db04
dm01db05
dm01db06
dm01db07
dm01db08

[root@dm01db08 ~]# cat cell_group
dm01cel01
dm01cel02
dm01cel03
dm01cel04
dm01cel05
dm01cel06
dm01cel07

[root@dm01db08 ~]# cat all_group
dm01db01
dm01db02
dm01db03
dm01db04
dm01db05
dm01db06
dm01db07
dm01db08
dm01cel01
dm01cel02
dm01cel03
dm01cel04
dm01cel05
dm01cel06
dm01cel07
dm01sw-iba01
dm01sw-ibb01

2. Navigate to Support directory on Compute node 1 as shown below

[root@dm01db01 ~]# cd /opt/oracle.SupportTools/

3. Oracle has provided a script *setup_ssh_eq.sh* to configure SSH equivalence across Exadata components. Execute the script as shown below. Here we are setting the SSH equivalence for root user

[root@dm01db01 oracle.SupportTools]# ./setup_ssh_eq.sh ~/all_group root welcome1

/root/.ssh/id_dsa already exists.

Overwrite (y/n)?

/root/.ssh/id_rsa already exists.

Overwrite (y/n)?

spawn dcli -c dm01db01 -l root -k

dm01db01: ssh key already exists