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How to Restore and Recover a Database on a New Host with a Different Directory Structure



How to Restore and Recover a Database on a New Host with a Different Directory Structure from Tape backup



Step1> Install oracle software (same version as old host) on new host
To perform binary installation you can refer below post

Step2> Apply required patches

Step3> set environmental variables
export ORACLE_HOME=/u01/app/oracle/product/11.2.0.4/dbhome1
export PATH=$PATH:$ORACLE_HOME/bin
export ORACLE_SID=ORCL1P

Step4> Create initfile
create init file under $ORACLE_HOME/dbs with db_name parameter in it.
cat $ORACLE_HOME/dbs/initORCL1P.ora
db_name=ORCL1P

Step5> invoke rman as follows
invoke RMAN connect to target and catalog database.
set dbid you want to restore
rman target /  catalog rman/xxxxxx@catalogdb
RMAN> set dbid=915313462;

Step6> restore spfile as pfile
run {
allocate  channel ch1 DEVICE TYPE 'SBT_TAPE' PARMS  'ENV=(TDPO_OPTFILE=??_db.opt)';
allocate channel ch2 DEVICE TYPE 'SBT_TAPE' PARMS  'ENV=(TDPO_OPTFILE=??_log.opt)';
RESTORE SPFILE to pfile '/u01/app/oracle/product/11.2.0.4/dbhome1/dbs/initORCL1P.ora';
} 

NOTE: scroll down to see the outcome of pfile restore

Step7> Modify init.ora file
modify the required  parameters of initORCL1P.ora.
followings are the minimum parameters that need to be modified
audit_file_dest
control_files
db_recovery_file_dest
log_archive_dest_1

Step8> Start the database with modified init file
start the database in nomount mode with modified initORCL1P.ora file
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 2672361472 bytes
Fixed Size                  2256232 bytes
Variable Size            2600469144 bytes
Database Buffers           50331648 bytes
Redo Buffers               19304448 bytes

Step9> restore controlfile
run {
allocate  channel ch1 DEVICE TYPE 'SBT_TAPE' PARMS  'ENV=(TDPO_OPTFILE=??_db.opt)';
allocate channel ch2 DEVICE TYPE 'SBT_TAPE' PARMS  'ENV=(TDPO_OPTFILE=??_log.opt)';
SET UNTIL TIME "to_date('10-JAN-2021 11:30:00','DD-MON-YYYY hh24:mi:ss')";
restore controlfile from autobackup;
} 

NOTE: scroll down to see the outcome of controlfile restore

Step10> mount the database
Once the controlfile is restored you can not mount the database
SQL> alter database mount;
Database altered.

Step11> rename redo logfiles
SQL>select * from v$logfile;
    GROUP# STATUS  TYPE    MEMBER                                      
---------- ------- ------- ---------------------------------------------
         1         ONLINE  /data1/oracle/ORCL1P/redo/redoG1M1.rdo      
         2         ONLINE  /data1/oracle/ORCL1P/redo/redoG3M1.rdo      
         3         ONLINE  /data1/oracle/ORCL1P/redo/redoG2M1.rdo   
  
SQL>alter database rename file '/data1/oracle/ORCL1P/redo/redoG1M1.rdo' to '/u01/data1/ORCL1P/redo/redoG1M1.rdo';
SQL>alter database rename file '/data1/oracle/ORCL1P/redo/redoG3M1.rdo' to '/u01/data1/ORCL1P/redo/redoG3M1.rdo';
SQL>alter database rename file '/data1/oracle/ORCL1P/redo/redoG2M1.rdo' to '/u01/data1/ORCL1P/redo/redoG2M1.rdo';
SQL>select * from v$logfile;

Step12> Find the list of datafiles
SQL> select file#,name from v$datafile;
     FILE# NAME
---------- --------------------------------------------------
         1 /data1/oracle/ORCL1P/system_01.dbf
         2 /data1/oracle/ORCL1P/sysaux_01.dbf
         3 /data1/oracle/ORCL1P/undotbs_01.dbf
         5 /data1/oracle/ORCL1P/TECBOS_01.dbf

Step13> Restore the database now.
run
{
allocate  channel ch1 DEVICE TYPE 'SBT_TAPE' PARMS  'ENV=(TDPO_OPTFILE=??_db.opt)';
allocate channel ch2 DEVICE TYPE 'SBT_TAPE' PARMS  'ENV=(TDPO_OPTFILE=??_log.opt)';
allocate  channel ch3 DEVICE TYPE disk;
SET UNTIL TIME "to_date('11-JAN-2021 04:30:00','DD-MON-YYYY hh24:mi:ss')";
set newname for datafile  1 to '/u01/data1/ORCL1P/system_01.dbf';
set newname for datafile  2 to '/u01/data1/ORCL1P/sysaux_01.dbf' ;
set newname for datafile  3 to '/u01/data1/ORCL1P/undotbs_01.dbf';
set newname for datafile  5 to '/u01/data1/ORCL1P/TECBOS_01.dbf';
 restore database;
 switch datafile all;
 recover database;
 alter database open resetlogs;
 }

NOTE: scroll down to see the outcome of Database restore

Step14> Rename tempfile
SQL> select * from v$tempfile;
SQL> ALTER TABLESPACE TEMP ADD TEMPFILE 'new tempfile path filename' REUSE;

SQL> ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/data1/ORCL1P/temp_01.dbf' size 200M autoextend on;
Tablespace altered.


Outcome of Step6  restore spfile as pfile
allocated channel: ch1
channel ch1: SID=171 device type=SBT_TAPE
channel ch1: Data Protection for Oracle: version 8.1.0.2
allocated channel: ch2
channel ch2: SID=9 device type=SBT_TAPE
channel ch2: Data Protection for Oracle: version 8.1.0.2
Starting restore at 15-JAN-21
new media label is 72395 for piece c-915313470-20210111-01
channel ch1: starting datafile backup set restore
channel ch1: restoring SPFILE to PFILE
output file name=/u01/app/oracle/product/11.2.0.4/dbhome1/dbs/initORCL1P.ora
channel ch1: reading from backup piece c-915313470-20210111-01
channel ch1: piece handle=c-915313470-20210111-01 tag=TAG20210111T063156
channel ch1: restored backup piece 1
channel ch1: restore complete, elapsed time: 00:01:05
Finished restore at 15-JAN-21
released channel: ch1
released channel: ch2

Outcome of Step9 restore controlfile

allocated channel: ch1
channel ch1: SID=246 device type=SBT_TAPE
channel ch1: Data Protection for Oracle: version 8.1.0.2
allocated channel: ch2
channel ch2: SID=247 device type=SBT_TAPE
channel ch2: Data Protection for Oracle: version 8.1.0.2
executing command: SET until clause
Starting restore at 17-JAN-21
channel ch1: looking for AUTOBACKUP on day: 20210111
channel ch2: looking for AUTOBACKUP on day: 20210111
channel ch1: AUTOBACKUP found: c-544393468-20210111-00
channel ch2: skipped, AUTOBACKUP already found
channel ch1: restoring control file from AUTOBACKUP c-544393468-20210111-00
channel ch1: control file restore from AUTOBACKUP complete
output file name=/u01/data1/ORCL1P/control/control_01.ctl
output file name=/u01/data1/ORCL1P/control/control_02.ctl
output file name=/u01/data1/ORCL1P/control/control_03.ctl
Finished restore at 17-JAN-21
released channel: ch1
released channel: ch2
RMAN>
RMAN> exit

Outcome of  Step13 Restore the database now

allocated channel: ch1
channel ch1: SID=11 device type=SBT_TAPE
channel ch1: Data Protection for Oracle: version 8.1.0.2
allocated channel: ch2
channel ch2: SID=9 device type=SBT_TAPE
channel ch2: Data Protection for Oracle: version 8.1.0.2
allocated channel: ch3
channel ch3: SID=12 device type=DISK
executing command: SET until clause
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
Starting restore at 17-JAN-21
Starting implicit crosscheck backup at 17-JAN-21
Finished implicit crosscheck backup at 17-JAN-21
Starting implicit crosscheck copy at 17-JAN-21
Crosschecked 2 objects
Finished implicit crosscheck copy at 17-JAN-21
searching for all files in the recovery area
cataloging files...
no files cataloged
new media label is 72058 for piece db_ORCL1P_1061143038_2655_1_1
channel ch1: starting datafile backup set restore
channel ch1: specifying datafile(s) to restore from backup set
channel ch1: restoring datafile 00001 to /u01/data1/ORCL1P/system_01.dbf'
channel ch1: restoring datafile 00002 to /u01/data1/ORCL1P/sysaux_01.dbf'
channel ch1: restoring datafile 00003 to /u01/data1/ORCL1P/undotbs_01.dbf'
channel ch1: restoring datafile 00005 to /u01/data1/ORCL1P/TECBOS_01.dbf'
channel ch1: reading from backup piece db_ORCL1P_1061143038_2655_1_1
channel ch1: piece handle=db_ORCL1P_1061143038_2655_1_1 tag=PR_WEEKLY_INCR0
channel ch1: restored backup piece 1
channel ch1: restore complete, elapsed time: 00:02:15
Finished restore at 17-JAN-21
datafile 1 switched to datafile copy
input datafile copy RECID=29 STAMP=1062076900 file name=/u01/data1/ORCL1P/dbfile/system_01.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=30 STAMP=1062076900 file name=/u01/data1/ORCL1P/dbfile/sysaux_01.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=31 STAMP=1062076900 file name=/u01/data1/ORCL1P/dbfile/undotbs_01.dbf
datafile 5 switched to datafile copy
input datafile copy RECID=32 STAMP=1062076900 file name=/u01/data1/ORCL1P/dbfile/TECBOS_01.dbf
Starting recover at 17-JAN-21
new media label is 72395 for piece db_ORCL1P_1061500640_2689_1_1
channel ch1: starting incremental datafile backup set restore
channel ch1: specifying datafile(s) to restore from backup set
destination for restore of datafile 00001: /u01/data1/ORCL1P/dbfile/system_01.dbf
destination for restore of datafile 00002: /u01/data1/ORCL1P/dbfile/sysaux_01.dbf
destination for restore of datafile 00003: /u01/data1/ORCL1P/dbfile/undotbs_01.dbf
destination for restore of datafile 00005: /u01/data1/ORCL1P/dbfile/TECBOS_01.dbf
channel ch1: reading from backup piece db_ORCL1P_1061500640_2689_1_1
channel ch1: piece handle=db_ORCL1P_1061500640_2689_1_1 tag=PR_DAILY_INCR1
channel ch1: restored backup piece 1
channel ch1: restore complete, elapsed time: 00:01:15
starting media recovery
channel ch2: starting archived log restore to default destination
channel ch2: restoring archived log
archived log thread=1 sequence=36892
channel ch2: restoring archived log
archived log thread=1 sequence=36893
channel ch2: restoring archived log
archived log thread=1 sequence=36894
channel ch2: restoring archived log
archived log thread=1 sequence=36895
channel ch2: restoring archived log
archived log thread=1 sequence=36896
channel ch2: restoring archived log
archived log thread=1 sequence=36897
channel ch2: restoring archived log
archived log thread=1 sequence=36898
channel ch2: restoring archived log
archived log thread=1 sequence=36899
channel ch2: restoring archived log
archived log thread=1 sequence=36900
channel ch2: restoring archived log
archived log thread=1 sequence=36901
channel ch2: restoring archived log
archived log thread=1 sequence=36902
channel ch2: restoring archived log
archived log thread=1 sequence=36903
channel ch2: restoring archived log
archived log thread=1 sequence=36904
channel ch2: restoring archived log
archived log thread=1 sequence=36905
channel ch2: restoring archived log
archived log thread=1 sequence=36906
channel ch2: reading from backup piece arch_ORCL1P_1061526864_2691_1_1
channel ch2: piece handle=arch_ORCL1P_1061526864_2691_1_1 tag=PR_DAILY_ARCH
channel ch2: restored backup piece 1
channel ch2: restore complete, elapsed time: 00:00:03
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36892.arc thread=1 sequence=36892
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36893.arc thread=1 sequence=36893
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36894.arc thread=1 sequence=36894
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36895.arc thread=1 sequence=36895
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36896.arc thread=1 sequence=36896
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36897.arc thread=1 sequence=36897
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36898.arc thread=1 sequence=36898
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36899.arc thread=1 sequence=36899
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36900.arc thread=1 sequence=36900
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36901.arc thread=1 sequence=36901
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36902.arc thread=1 sequence=36902
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36903.arc thread=1 sequence=36903
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36904.arc thread=1 sequence=36904
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36905.arc thread=1 sequence=36905
archived log file name=/u01/data1/ORCL1P/arc2/ORCL1P_1_997329966_36906.arc thread=1 sequence=36906
media recovery complete, elapsed time: 00:00:10
Finished recover at 17-JAN-21
database opened
new incarnation of database registered in recovery catalog
released channel: ch1
released channel: ch2
released channel: ch3

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