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Tag: RMAN restore

  • RMAN Duplicate With Same Database Name and Same Directory Structure

    Overview


    Oracle Recovery Manager (RMAN) provides a comprehensive foundation for efficiently backing up and recovering the Oracle databases, it provides a common interface, via command line and Enterprise Manager, for backup tasks across different host operating systems, automates administration of your backup strategies.
    Environment Details
    Target (Source) details
    Database Name
    prod
    Hostname
    Snsm-linux02
    Ip Address
    172.16.110.18
    OS
    Linux
    Version
    x86_64
    Datafile Location
    /data2/prod
    Backup Location
    /backup/rman_backup
    Tns details:
    PROD =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.110.18)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = prod)
        )
      )
    Destination (Auxiliary) details:
    Database Name
    Prod
    Hostname
    Nsm-linux01
    Ip Address
    172.16.110.16
    OS
    Linux
    Version
    x86_64
    Datafile Location
    /data2/prod
    Backup Location
    /backup/rman_backup
    Tns details:
    DUP =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.110.16)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = dup)
        )
      )

    Pre-requisites

    • Oracle net configuration
    • Both target and destination server should have tns entries
    • Static listener registration on auxiliary site
    • Service should be register on aux listener
    • Password files from target database
    • Sqlnet.ora should have correct parameters
    • Target database should be running through spfile
    • Check connectivity between target and destination server
    Steps on target (source) server

    • Put tns entry of auxiliary database into target $ORACLE_HOME/network/admin directory
    [oracle@Snsm-linux02 admin]$ cd /data2/app/oracle/product/11.2.0/network/admin
    [oracle@Snsm-linux02 admin]$ vi tnsnames.ora
    DUP =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.110.16)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = dup)
        )
      )
    [oracle@Snsm-linux02 admin]$ tnsping dup
    TNS Ping Utility for Linux: Version 11.2.0.1.0 – Production on 01-APR-2015 12:34:19
    Copyright (c) 1997, 2009, Oracle.  All rights reserved.
    Used parameter files:
    /data2/app/oracle/product/11.2.0/network/admin/sqlnet.ora
    Used TNSNAMES adapter to resolve the alias
    Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.110.16)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED)
    (SERVICE_NAME = dup)))
    OK (0 msec)
    •  Check database whether it is running in archive log mode.
    SQL> select name, open_mode, log_mode from v$database;
    NAME       OPEN_MODE            LOG_MODE
    ———- ——————– —————
    PROD       READ WRITE           ARCHIVELOG
    • Check database is running from spfile.
    SQL> select value from v$parameter where name=’spfile’;
    VALUE
    —————————————————————–
    /data2/app/oracle/product/11.2.0/dbs/spfileprod.ora
    or
    SQL> show parameter pfile
    NAME                                 TYPE                              VALUE
    ———————————— ——————————— ——————————
    spfile                               string                            /data2/app/oracle/product/11.2
                                                                           .0/dbs/spfileprod.ora
    • Create pfile from spfile.
    SQL> create pfile=’/backup/rman_backup/initprod.ora’ from spfile;
    File created.
    • Create password file.
    [oracle@Snsm-linux02 dbs]$ pwd
    /data2/app/oracle/product/11.2.0/dbs
    [oracle@Snsm-linux02 dbs]$orapwd file=orapwprod password=oracle
    • Copy the password file and init file to destination $ORACLE_HOME/dbs directory using scp or ftp
    scp orapwprod oracle@172.16.110.18:/data2/app/oracle/product/11.2.0/dbs/
    scp /backup/rman_backup/initprod.ora oracle@172.16.110.18:/data2/app/oracle/product/11.2.0/dbs/
    Steps on destination server
    • Put static listener entry into listener.ora file in $ORACLE_HOME/network/admin directory.
    [oracle@Nsm-linux01 admin]$ cd /data2/app/oracle/product/11.2.0/network/admin
    [oracle@Nsm-linux01 admin]$
    SID_LIST_LISTENER =
      (SID_LIST =
        (SID_DESC =
          (GLOBAL_DBNAME = dup)
          (ORACLE_HOME = /data2/app/oracle/product/11.2.0)
          (SID_NAME = prod)
        )
      )
    LISTENER =
      (DESCRIPTION_LIST =
        (DESCRIPTION =
          (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.110.16)(PORT = 1521))
        )
        (DESCRIPTION =
          (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
        )
      )
    Here global_name is nothing but service name and sid_name is instance name
    Now reload the listener and check the services
    [oracle@Nsm-linux01 admin]$ lsnrctl
    LSNRCTL for Linux: Version 11.2.0.1.0 – Production on 01-APR-2015 12:46:41
    Copyright (c) 1991, 2009, Oracle.  All rights reserved.
    Welcome to LSNRCTL, type “help” for information.
    LSNRCTL> reload
    Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.110.16)(PORT=1521)))
    The command completed successfully
    LSNRCTL> services
    Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.110.16)(PORT=1521)))
    Services Summary…
    Service “dup” has 1 instance(s).
      Instance “prod”, status UNKNOWN, has 1 handler(s) for this service…
        Handler(s):
          “DEDICATED” established:0 refused:0
             LOCAL SERVER
    Service “prod” has 1 instance(s).
          “DEDICATED” established:0 refused:0 state:ready
             LOCAL SERVER
    The command completed successfully
    • Put Tns entry for target (source) database in $ORACLE_HOME/network/admin directory
    [oracle@Nsm-linux01 admin]$ vi tnsnames.ora
    PROD =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.110.18)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = prod)
        )
      )
    [oracle@Nsm-linux01 admin]$ tnsping prod
    TNS Ping Utility for Linux: Version 11.2.0.1.0 – Production on 01-APR-2015 12:49:28
    Copyright (c) 1997, 2009, Oracle.  All rights reserved.
    Used parameter files:
    /data2/app/oracle/product/11.2.0/network/admin/sqlnet.ora
    Used TNSNAMES adapter to resolve the alias
    Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.110.18)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED)
    (SERVICE_NAME = prod)))
    OK (10 msec)
    • Create the directory structure same as target(source) server.
    [oracle@Nsm-linux01 admin]$ mkdir -p /data2/prod
    [oracle@Nsm-linux01 admin]$ mkdir -p /backup/archive
    • Set the oracle Sid and start the instance in no mount stage.
    [oracle@Nsm-linux01 admin]$ export ORACLE_SID=prod
    [oracle@Nsm-linux01 admin]$ sqlplus
    SQL*Plus: Release 11.2.0.1.0 Production on Wed Apr 1 12:54:37 2015
    Copyright (c) 1982, 2009, Oracle.  All rights reserved.
    Enter user-name: sys as sysdba
    Enter password:
    Connected to an idle instance.
    SQL> startup nomount
    ORACLE instance started.
    Total System Global Area 1152450560 bytes
    Fixed Size                  2212696 bytes
    Variable Size             335547560 bytes
    Database Buffers          805306368 bytes
    Redo Buffers                9383936 bytes
    SQL>
    • Now connect to Rman
    [oracle@Nsm-linux01 admin]$ rman target sys/oracle@prod auxiliary sys/oracle@dup
    Recovery Manager: Release 11.2.0.1.0 – Production on Wed Apr 1 12:56:39 2015
    Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
    connected to target database: PROD (DBID=284539893)
    connected to auxiliary database: PROD (not mounted)
    RMAN>

    • Issue the command to duplicate the database

    RMAN> DUPLICATE TARGET DATABASE TO prod FROM ACTIVE DATABASE NOFILENAMECHECK;
    Starting Duplicate Db at 01-APR-15
    using target database control file instead of recovery catalog
    allocated channel: ORA_AUX_DISK_1
    channel ORA_AUX_DISK_1: SID=63 device type=DISK
    Following is the output.
    contents of Memory Script:
    {
       sql clone “alter system set  db_name =
    ”PROD” comment=
    ”Modified by RMAN duplicate” scope=spfile”;
       sql clone “alter system set  db_unique_name =
    ”PROD” comment=
    ”Modified by RMAN duplicate” scope=spfile”;
       shutdown clone immediate;
       startup clone force nomount
       backup as copy current controlfile auxiliary format  ‘/data2/prod/control01.ctl’;
       restore clone controlfile to  ‘/data2/prod/control02.ctl’ from
    ‘/data2/prod/control01.ctl’;
       alter clone database mount;
    }
    executing Memory Script
    sql statement: alter system set  db_name =  ”PROD” comment= ”Modified by RMAN duplicate” scope=spfile
    sql statement: alter system set  db_unique_name =  ”PROD” comment= ”Modified by RMAN duplicate” scope=spfile
    Oracle instance shut down
    Oracle instance started
    Total System Global Area    1152450560 bytes
    Fixed Size                     2212696 bytes
    Variable Size                335547560 bytes
    Database Buffers             805306368 bytes
    Redo Buffers                   9383936 bytes
    Starting backup at 01-APR-15
    allocated channel: ORA_DISK_1
    channel ORA_DISK_1: SID=76 device type=DISK
    channel ORA_DISK_1: starting datafile copy
    copying current control file
    output file name=/data2/app/oracle/product/11.2.0/dbs/snapcf_prod.f tag=TAG20150401T124940 RECID=4 STAMP=875882981
    channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
    Finished backup at 01-APR-15
    Starting restore at 01-APR-15
    allocated channel: ORA_AUX_DISK_1
    channel ORA_AUX_DISK_1: SID=63 device type=DISK
    channel ORA_AUX_DISK_1: copied control file copy
    Finished restore at 01-APR-15
    database mounted
    contents of Memory Script:
    {
       set newname for datafile  1 to
    “/data2/prod/system01.dbf”;
       set newname for datafile  2 to
    “/data2/prod/sysaux01.dbf”;
       set newname for datafile  3 to
    “/data2/prod/undotbs01.dbf”;
       set newname for datafile  4 to
    “/data2/prod/users01.dbf”;
       set newname for datafile  5 to
    “/data2/prod/example01.dbf”;
       backup as copy reuse
       datafile  1 auxiliary format
    “/data2/prod/system01.dbf”   datafile
    2 auxiliary format
    “/data2/prod/sysaux01.dbf”   datafile
    3 auxiliary format
    “/data2/prod/undotbs01.dbf”   datafile
    4 auxiliary format
    “/data2/prod/users01.dbf”   datafile
    5 auxiliary format
    “/data2/prod/example01.dbf”   ;
       sql ‘alter system archive log current’;
    }
    executing Memory Script
    executing command: SET NEWNAME
    executing command: SET NEWNAME
    executing command: SET NEWNAME
    executing command: SET NEWNAME
    executing command: SET NEWNAME
    Starting backup at 01-APR-15
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting datafile copy
    input datafile file number=00001 name=/data2/prod/system01.dbf
    output file name=/data2/prod/system01.dbf tag=TAG20150401T124955
    channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:15
    channel ORA_DISK_1: starting datafile copy
    input datafile file number=00002 name=/data2/prod/sysaux01.dbf
    output file name=/data2/prod/sysaux01.dbf tag=TAG20150401T124955
    channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:05
    channel ORA_DISK_1: starting datafile copy
    input datafile file number=00005 name=/data2/prod/example01.dbf
    output file name=/data2/prod/example01.dbf tag=TAG20150401T124955
    channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
    channel ORA_DISK_1: starting datafile copy
    input datafile file number=00003 name=/data2/prod/undotbs01.dbf
    output file name=/data2/prod/undotbs01.dbf tag=TAG20150401T124955
    channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
    channel ORA_DISK_1: starting datafile copy
    input datafile file number=00004 name=/data2/prod/users01.dbf
    output file name=/data2/prod/users01.dbf tag=TAG20150401T124955
    channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
    Finished backup at 01-APR-15
    sql statement: alter system archive log current
    contents of Memory Script:
    {
       backup as copy reuse
       archivelog like  “/backup/archive/1_116_872701561.dbf” auxiliary format
    “/backup/archive/1_116_872701561.dbf”   ;
       catalog clone archivelog  “/backup/archive/1_116_872701561.dbf”;
       switch clone datafile all;
    }
    executing Memory Script
    Starting backup at 01-APR-15
    using channel ORA_DISK_1
    channel ORA_DISK_1: starting archived log copy
    input archived log thread=1 sequence=116 RECID=112 STAMP=875883160
    output file name=/backup/archive/1_116_872701561.dbf RECID=0 STAMP=0
    channel ORA_DISK_1: archived log copy complete, elapsed time: 00:00:03
    Finished backup at 01-APR-15
    cataloged archived log
    archived log file name=/backup/archive/1_116_872701561.dbf RECID=112 STAMP=875883644
    datafile 1 switched to datafile copy
    input datafile copy RECID=4 STAMP=875883644 file name=/data2/prod/system01.dbf
    datafile 2 switched to datafile copy
    input datafile copy RECID=5 STAMP=875883644 file name=/data2/prod/sysaux01.dbf
    datafile 3 switched to datafile copy
    input datafile copy RECID=6 STAMP=875883645 file name=/data2/prod/undotbs01.dbf
    datafile 4 switched to datafile copy
    input datafile copy RECID=7 STAMP=875883645 file name=/data2/prod/users01.dbf
    datafile 5 switched to datafile copy
    input datafile copy RECID=8 STAMP=875883645 file name=/data2/prod/example01.dbf
    contents of Memory Script:
    {
       set until scn  4529390;
       recover
       clone database
        delete archivelog
       ;
    }
    executing Memory Script
    executing command: SET until clause
    Starting recover at 01-APR-15
    using channel ORA_AUX_DISK_1
    starting media recovery
    archived log for thread 1 with sequence 116 is already on disk as file /backup/archive/1_116_872701561.dbf
    archived log file name=/backup/archive/1_116_872701561.dbf thread=1 sequence=116
    media recovery complete, elapsed time: 00:00:02
    Finished recover at 01-APR-15
    contents of Memory Script:
    {
       shutdown clone immediate;
       startup clone nomount;
       sql clone “alter system set  db_name =
    ”PROD” comment=
    ”Reset to original value by RMAN” scope=spfile”;
       sql clone “alter system reset  db_unique_name scope=spfile”;
       shutdown clone immediate;
       startup clone nomount;
    }
    executing Memory Script
    database dismounted
    Oracle instance shut down
    connected to auxiliary database (not started)
    Oracle instance started
    Total System Global Area    1152450560 bytes
    Fixed Size                     2212696 bytes
    Variable Size                335547560 bytes
    Database Buffers             805306368 bytes
    Redo Buffers                   9383936 bytes
    sql statement: alter system set  db_name =  ”PROD” comment= ”Reset to original value by RMAN” scope=spfile
    sql statement: alter system reset  db_unique_name scope=spfile
    Oracle instance shut down
    connected to auxiliary database (not started)
    Oracle instance started
    Total System Global Area    1152450560 bytes
    Fixed Size                     2212696 bytes
    Variable Size                335547560 bytes
    Database Buffers             805306368 bytes
    Redo Buffers                   9383936 bytes
    sql statement: CREATE CONTROLFILE REUSE SET DATABASE “PROD” RESETLOGS ARCHIVELOG
      MAXLOGFILES     16
      MAXLOGMEMBERS      3
      MAXDATAFILES      100
      MAXINSTANCES     8
      MAXLOGHISTORY      292
    LOGFILE
      GROUP  1 ( ‘/data2/prod/redo01.log’ ) SIZE 50 M  REUSE,
      GROUP  2 ( ‘/data2/prod/redo02.log’ ) SIZE 50 M  REUSE,
      GROUP  3 ( ‘/data2/prod/redo03.log’ ) SIZE 50 M  REUSE
    DATAFILE
      ‘/data2/prod/system01.dbf’
    CHARACTER SET WE8MSWIN1252
    contents of Memory Script:
    {
       set newname for tempfile  1 to
    “/data2/prod/temp01.dbf”;
       switch clone tempfile all;
       catalog clone datafilecopy  “/data2/prod/sysaux01.dbf”,
    “/data2/prod/undotbs01.dbf”,
    “/data2/prod/users01.dbf”,
    “/data2/prod/example01.dbf”;
       switch clone datafile all;
    }
    executing Memory Script
    executing command: SET NEWNAME
    renamed tempfile 1 to /data2/prod/temp01.dbf in control file
    cataloged datafile copy
    datafile copy file name=/data2/prod/sysaux01.dbf RECID=1 STAMP=875883671
    cataloged datafile copy
    datafile copy file name=/data2/prod/undotbs01.dbf RECID=2 STAMP=875883671
    cataloged datafile copy
    datafile copy file name=/data2/prod/users01.dbf RECID=3 STAMP=875883671
    cataloged datafile copy
    datafile copy file name=/data2/prod/example01.dbf RECID=4 STAMP=875883672
    datafile 2 switched to datafile copy
    input datafile copy RECID=1 STAMP=875883671 file name=/data2/prod/sysaux01.dbf
    datafile 3 switched to datafile copy
    input datafile copy RECID=2 STAMP=875883671 file name=/data2/prod/undotbs01.dbf
    datafile 4 switched to datafile copy
    input datafile copy RECID=3 STAMP=875883671 file name=/data2/prod/users01.dbf
    datafile 5 switched to datafile copy
    input datafile copy RECID=4 STAMP=875883672 file name=/data2/prod/example01.dbf
    contents of Memory Script:
    {
       Alter clone database open resetlogs;
    }
    executing Memory Script
    database opened
    Finished Duplicate Db at 01-APR-15
     Issues which we have faced are as follows              

    Everything has went well listener services were also worked fine, RMAN connectivity from auxiliary server also fine using net service name but  When issue the duplicate database command from RMAN> prompt it has thrown following error.
    RMAN-00571: ===========================================================
    RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
    RMAN-00571: ===========================================================
    RMAN-03002: failure of Duplicate Db command at 03/31/2015 16:01:01
    RMAN-03015: error occurred in stored script Memory Script
    RMAN-03009: failure of backup command on ORA_DISK_1 channel at 03/31/2015 16:01:01
    ORA-17629: Cannot connect to the remote database server
    ORA-17627: ORA-12154: TNS:could not resolve the connect identifier specified
    ORA-17629: Cannot connect to the remote database server
    Then we have searched for solutions, we get one MOS note 1144273.1
    This note gives some idea like causes and solutions from that we have checked in our databases on destination server there are wrong parameters in sqlnet.ora then we have corrected the sqlnet.ora file as follows
    [oracle@Nsm-linux01 admin]$ cat sqlnet.ora
    # sqlnet.ora Network Configuration File: /data2/app/oracle/product/11.2.0/network/admin/sqlnet.ora
    # Generated by Oracle configuration tools.
    SQLNET.AUTHENTICATION_SERVICES = (NTS,NONE)
    #NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
    ADR_BASE = /data2/app/oracle
    Now we have executed again, this time we get different error, check below.
    RMAN-00571: ===========================================================
    RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
    RMAN-00571: ===========================================================
    RMAN-03002: failure of Duplicate Db command at 03/31/2015 16:23:02
    RMAN-03015: error occurred in stored script Memory Script
    RMAN-03009: failure of backup command on ORA_DISK_1 channel at 03/31/2015 16:23:02
    ORA-17628: Oracle error 19505 returned by remote Oracle server
    After dig out the error we get to know that there is no directory structure is available on destination server to accommodate data files and control  Files, we have created the directory structure and execute the duplicate command again, this time has successful.
     Additionally there is one more MOS note for known issues while duplicating RMAN. 1366290.1





    Conclusion

    In the above article, we have learned that Active Duplication using Rman utility with same database name and same directory structure, and we have faced some errors and their work around.

    BY
    Name: Omer
    Designation: Senior Database Engineer
    Organization: Netsoftmate IT Solutions.
    Email: info@netsoftmate.com

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