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2025-01-23 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >
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11gR2's RMAN duplicate feels much more advanced than 10g, which needs to be replicated on the basis of rman backup, using RMAN duplicate to create a database with identical data but different DBID. 11g RMAN duplicate can be realized by Active database duplicate and Backup-based duplicate. The test here uses Active database duplicate, because Active database duplicate is powerful, so there is no need to backup the target database with rman first. As long as the target database is in archive mode, it can directly copy the database through the network, and automatically open the database after the completion of copy. This has obvious advantages for big data, especially for T-level databases, because there is no need for backup before replication, which reduces the time for backup and backup transmission, and saves backup space. Let's do the specific duplicate operation.
Application scenarios:
1. The old library can be used and the network is smooth
Experimental environment:
Target db:
Ip 192.168.56.10
Oracle_sid=mydb
Oracle_version=11.2.0.3
Auxiliary db:
Ip 192.168.56.150
Oracle_sid=oradu
Oracle_version=11.2.0.3
1. Create a parameter file in the new library and start the instance to nomount status
-- execute on auxiliary db
[oracle@localhost ~] $cat initoradu.ora
Db_name=oradu
Db_block_size=8192
Db_file_name_convert= ('/ u01Accord oradataPlacement')
Log_file_name_convert= ('/ u01Accord oradataPlacement')
-- because different instances are used here, db_file_name_convert and log_file_name_convert must be added, otherwise an error will be reported during replication and the data file cannot be created. If the data file is copied with the same instance name and the two data directories are exactly the same, these two parameters can be omitted.
-- data files for creating new libraries on auxiliary db are in the directory where they are stored.
Mkdir-p / u01/app/oracle/oradata/oradu/
[oracle@localhost ~] $export ORACLE_SID=oradu
[oracle@localhost ~] $sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Sun Mar 20 12:56:36 2016
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to an idle instance.
SQL > startup nomount pfile=/home/oracle/initoradu.ora
ORACLE instance started.
Total System Global Area 238034944 bytes
Fixed Size 2227136 bytes
Variable Size 180356160 bytes
Database Buffers 50331648 bytes
Redo Buffers 5120000 bytes
SQL >
2. Create a password file
-- the passwords of target DB and auxiliary DB must be kept consistent. Here, I directly copy the password file of target db to the corresponding directory of auxiliary db and rename it.
-- execute on target db
[oracle@localhost ~] $scp / u01/app/oracle/product/11.2.0/db/dbs/orapwmydb oracle@192.168.56.150:/u01/app/oracle/product/11.2.0/db/dbs/orapworadu
The authenticity of host '192.168.56.150 (192.168.56.150)' can't be established.
RSA key fingerprint is 58:71:ed:0c:e0:2a:57:68:3e:fe:79:52:8b:72:2e:00.
Are you sure you want to continue connecting (yes/no)? Yes
Warning: Permanently added '192.168.56.150' (RSA) to the list of known hosts.
Oracle@192.168.56.150's password:
Orapwmydb 100% 1536 1.5KB/s 00:00
3. Configure target db and auxiliary db snooping
-- auxiliary db must use static snooping, otherwise RMAN-04006: error from auxiliary database: ORA-12528: TNS:listener: all appropriate instances are blocking new connections is reported.
-- auxiliary db
Vi / u01/app/oracle/product/11.2.0/db/network/admin/listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(ORACLE_HOME = / u01/app/oracle/product/11.2.0/db)
(SID_NAME=oradu)
)
)
Vi / u01/app/oracle/product/11.2.0/db/network/admin/tnsnames.ora
Mydb =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.56.10) (PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = mydb)
(SERVER = DEDICATED)
)
)
-- target db
Vi / u01/app/oracle/product/11.2.0/db/network/admin/listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(ORACLE_HOME = / u01/app/oracle/product/11.2.0/db)
(ORACLE_SID = mydb)
)
)
Vi / u01/app/oracle/product/11.2.0/db/network/admin/tnsnames.ora
Oradu =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.56.150) (PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = oradu)
(SERVER = DEDICATED)
)
)
-- restart the monitoring of both machines
Lsnrctl stop
Lsnrctl start
4. Start replication
-- execute on target db
[oracle@localhost ~] $rman target / auxiliary sys/123456@oradu
Recovery Manager: Release 11.2.0.3.0-Production on Sun Mar 20 14:09:39 2016
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
Connected to target database: MYDB (DBID=2820637901)
Connected to auxiliary database: ORADU (not mounted)
RMAN > duplicate target database to oradu from active database
Starting Duplicate Db at 20-MAR-16
Using target database control file instead of recovery catalog
Allocated channel: ORA_AUX_DISK_1
Channel ORA_AUX_DISK_1: SID=20 device type=DISK
Contents of Memory Script:
{
Sql clone "create spfile from memory"
}
Executing Memory Script
Sql statement: create spfile from memory
Contents of Memory Script:
{
Shutdown clone immediate
Startup clone nomount
}
Executing Memory Script
Oracle instance shut down
Connected to auxiliary database (not started)
Oracle instance started
Total System Global Area 238034944 bytes
Fixed Size 2227136 bytes
Variable Size 180356160 bytes
Database Buffers 50331648 bytes
Redo Buffers 5120000 bytes
Contents of Memory Script:
{
Sql clone "alter system set db_name =
'' MYDB'' comment=
'' Modified by RMAN duplicate'' scope=spfile''
Sql clone "alter system set db_unique_name =
'' ORADU'' comment=
'' Modified by RMAN duplicate'' scope=spfile''
Shutdown clone immediate
Startup clone force nomount
Backup as copy current controlfile auxiliary format'/ u01qapplash oracle.productUniverse 11.2.0DbAccord dbsUniverse cntrloradu.dbf'
Alter clone database mount
}
Executing Memory Script
Sql statement: alter system set db_name =''MYDB'' comment=' 'Modified by RMAN duplicate'' scope=spfile
Sql statement: alter system set db_unique_name =''ORADU'' comment=' 'Modified by RMAN duplicate'' scope=spfile
Oracle instance shut down
Oracle instance started
Total System Global Area 238034944 bytes
Fixed Size 2227136 bytes
Variable Size 180356160 bytes
Database Buffers 50331648 bytes
Redo Buffers 5120000 bytes
Starting backup at 20-MAR-16
Allocated channel: ORA_DISK_1
Channel ORA_DISK_1: SID=34 device type=DISK
Channel ORA_DISK_1: starting datafile copy
Copying current control file
Output file name=/u01/app/oracle/product/11.2.0/db/dbs/snapcf_mydb.f tag=TAG20160320T140956 RECID=31 STAMP=906991797
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 20-MAR-16
Database mounted
Contents of Memory Script:
{
Set newname for datafile 1 to
"/ u01/app/oracle/oradata/oradu/system01.dbf"
Set newname for datafile 2 to
"/ u01/app/oracle/oradata/oradu/sysaux01.dbf"
Set newname for datafile 3 to
"/ u01/app/oracle/oradata/oradu/undotbs01.dbf"
Set newname for datafile 4 to
"/ u01/app/oracle/oradata/oradu/users01.dbf"
Set newname for datafile 5 to
"/ u01/app/oracle/oradata/oradu/test.dbf"
Set newname for datafile 6 to
"/ u01/app/oracle/oradata/oradu/store_01.dbf"
Set newname for datafile 7 to
"/ u01/app/oracle/oradata/oradu/store_02.dbf"
Set newname for datafile 8 to
"/ u01/app/oracle/oradata/oradu/pitr01.dbf"
Backup as copy reuse
Datafile 1 auxiliary format
"/ u01/app/oracle/oradata/oradu/system01.dbf" datafile
2 auxiliary format
"/ u01/app/oracle/oradata/oradu/sysaux01.dbf" datafile
3 auxiliary format
"/ u01/app/oracle/oradata/oradu/undotbs01.dbf" datafile
4 auxiliary format
"/ u01/app/oracle/oradata/oradu/users01.dbf" datafile
5 auxiliary format
"/ u01/app/oracle/oradata/oradu/test.dbf" datafile
6 auxiliary format
"/ u01/app/oracle/oradata/oradu/store_01.dbf" datafile
7 auxiliary format
"/ u01/app/oracle/oradata/oradu/store_02.dbf" datafile
8 auxiliary format
"/ u01/app/oracle/oradata/oradu/pitr01.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
Executing command: SET NEWNAME
Executing command: SET NEWNAME
Executing command: SET NEWNAME
Starting backup at 20-MAR-16
Using channel ORA_DISK_1
Channel ORA_DISK_1: starting datafile copy
Input datafile file number=00001 name=/u01/app/oracle/oradata/mydb/system01.dbf
Output file name=/u01/app/oracle/oradata/oradu/system01.dbf tag=TAG20160320T141004
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:05
Channel ORA_DISK_1: starting datafile copy
Input datafile file number=00002 name=/u01/app/oracle/oradata/mydb/sysaux01.dbf
Output file name=/u01/app/oracle/oradata/oradu/sysaux01.dbf tag=TAG20160320T141004
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45
Channel ORA_DISK_1: starting datafile copy
Input datafile file number=00003 name=/u01/app/oracle/oradata/mydb/undotbs01.dbf
Output file name=/u01/app/oracle/oradata/oradu/undotbs01.dbf tag=TAG20160320T141004
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:25
Channel ORA_DISK_1: starting datafile copy
Input datafile file number=00004 name=/u01/app/oracle/oradata/mydb/users01.dbf
Output file name=/u01/app/oracle/oradata/oradu/users01.dbf tag=TAG20160320T141004
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
Channel ORA_DISK_1: starting datafile copy
Input datafile file number=00007 name=/u01/app/oracle/oradata/mydb/store_02.dbf
Output file name=/u01/app/oracle/oradata/oradu/store_02.dbf tag=TAG20160320T141004
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Channel ORA_DISK_1: starting datafile copy
Input datafile file number=00005 name=/u01/app/oracle/oradata/mydb/test.dbf
Output file name=/u01/app/oracle/oradata/oradu/test.dbf tag=TAG20160320T141004
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Channel ORA_DISK_1: starting datafile copy
Input datafile file number=00006 name=/u01/app/oracle/oradata/mydb/store_01.dbf
Output file name=/u01/app/oracle/oradata/oradu/store_01.dbf tag=TAG20160320T141004
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
Channel ORA_DISK_1: starting datafile copy
Input datafile file number=00008 name=/u01/app/oracle/oradata/mydb/pitr01.dbf
Output file name=/u01/app/oracle/oradata/oradu/pitr01.dbf tag=TAG20160320T141004
Channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 20-MAR-16
Sql statement: alter system archive log current
Contents of Memory Script:
{
Backup as copy reuse
Archivelog like "/ u01/app/oracle/product/11.2.0/db/dbs/arch/1_22_906314379.dbf" auxiliary format
"/ u01/app/oracle/product/11.2.0/db/dbs/arch2_22_906314379.dbf"
Catalog clone archivelog "/ u01/app/oracle/product/11.2.0/db/dbs/arch2_22_906314379.dbf"
Switch clone datafile all
}
Executing Memory Script
Starting backup at 20-MAR-16
Using channel ORA_DISK_1
Channel ORA_DISK_1: starting archived log copy
Input archived log thread=1 sequence=22 RECID=44 STAMP=906991972
Output file name=/u01/app/oracle/product/11.2.0/db/dbs/arch2_22_906314379.dbf RECID=0 STAMP=0
Channel ORA_DISK_1: archived log copy complete, elapsed time: 00:00:01
Finished backup at 20-MAR-16
Cataloged archived log
Archived log file name=/u01/app/oracle/product/11.2.0/db/dbs/arch2_22_906314379.dbf RECID=44 STAMP=906989788
Datafile 1 switched to datafile copy
Input datafile copy RECID=31 STAMP=906989788 file name=/u01/app/oracle/oradata/oradu/system01.dbf
Datafile 2 switched to datafile copy
Input datafile copy RECID=32 STAMP=906989788 file name=/u01/app/oracle/oradata/oradu/sysaux01.dbf
Datafile 3 switched to datafile copy
Input datafile copy RECID=33 STAMP=906989788 file name=/u01/app/oracle/oradata/oradu/undotbs01.dbf
Datafile 4 switched to datafile copy
Input datafile copy RECID=34 STAMP=906989788 file name=/u01/app/oracle/oradata/oradu/users01.dbf
Datafile 5 switched to datafile copy
Input datafile copy RECID=35 STAMP=906989788 file name=/u01/app/oracle/oradata/oradu/test.dbf
Datafile 6 switched to datafile copy
Input datafile copy RECID=36 STAMP=906989788 file name=/u01/app/oracle/oradata/oradu/store_01.dbf
Datafile 7 switched to datafile copy
Input datafile copy RECID=37 STAMP=906989788 file name=/u01/app/oracle/oradata/oradu/store_02.dbf
Datafile 8 switched to datafile copy
Input datafile copy RECID=38 STAMP=906989788 file name=/u01/app/oracle/oradata/oradu/pitr01.dbf
Contents of Memory Script:
{
Set until scn 2809336
Recover
Clone database
Delete archivelog
}
Executing Memory Script
Executing command: SET until clause
Starting recover at 20-MAR-16
Allocated channel: ORA_AUX_DISK_1
Channel ORA_AUX_DISK_1: SID=18 device type=DISK
Starting media recovery
Archived log for thread 1 with sequence 22 is already on disk as file / u01/app/oracle/product/11.2.0/db/dbs/arch2_22_906314379.dbf
Archived log file name=/u01/app/oracle/product/11.2.0/db/dbs/arch2_22_906314379.dbf thread=1 sequence=22
Media recovery complete, elapsed time: 00:00:01
Finished recover at 20-MAR-16
Oracle instance started
Total System Global Area 238034944 bytes
Fixed Size 2227136 bytes
Variable Size 180356160 bytes
Database Buffers 50331648 bytes
Redo Buffers 5120000 bytes
Contents of Memory Script:
{
Sql clone "alter system set db_name =
'' ORADU'' 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
Sql statement: alter system set db_name =''ORADU'' 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 238034944 bytes
Fixed Size 2227136 bytes
Variable Size 180356160 bytes
Database Buffers 50331648 bytes
Redo Buffers 5120000 bytes
Sql statement: CREATE CONTROLFILE REUSE SET DATABASE "ORADU" RESETLOGS ARCHIVELOG
MAXLOGFILES 16
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 292
LOGFILE
GROUP 1 ('/ u01 REUSE SIZE SIZE REUSE)
GROUP 2 ('/ u01 REUSE SIZE SIZE REUSE)
GROUP 3 ('/ u01 SIZE REUSE) SIZE 100m REUSE
GROUP 4 ('/ u01 SIZE REUSE) SIZE 100m REUSE
DATAFILE
'/ u01 apprenticeship oradata'oradata 'system 01.dbf'
CHARACTER SET ZHS16GBK
Contents of Memory Script:
{
Set newname for tempfile 1 to
"/ u01/app/oracle/oradata/oradu/temp01.dbf"
Switch clone tempfile all
Catalog clone datafilecopy "/ u01/app/oracle/oradata/oradu/sysaux01.dbf"
"/ u01/app/oracle/oradata/oradu/undotbs01.dbf"
"/ u01/app/oracle/oradata/oradu/users01.dbf"
"/ u01/app/oracle/oradata/oradu/test.dbf"
"/ u01/app/oracle/oradata/oradu/store_01.dbf"
"/ u01/app/oracle/oradata/oradu/store_02.dbf"
"/ u01/app/oracle/oradata/oradu/pitr01.dbf"
Switch clone datafile all
}
Executing Memory Script
Executing command: SET NEWNAME
Renamed tempfile 1 to / u01/app/oracle/oradata/oradu/temp01.dbf in control file
Cataloged datafile copy
Datafile copy file name=/u01/app/oracle/oradata/oradu/sysaux01.dbf RECID=1 STAMP=906989800
Cataloged datafile copy
Datafile copy file name=/u01/app/oracle/oradata/oradu/undotbs01.dbf RECID=2 STAMP=906989800
Cataloged datafile copy
Datafile copy file name=/u01/app/oracle/oradata/oradu/users01.dbf RECID=3 STAMP=906989800
Cataloged datafile copy
Datafile copy file name=/u01/app/oracle/oradata/oradu/test.dbf RECID=4 STAMP=906989800
Cataloged datafile copy
Datafile copy file name=/u01/app/oracle/oradata/oradu/store_01.dbf RECID=5 STAMP=906989800
Cataloged datafile copy
Datafile copy file name=/u01/app/oracle/oradata/oradu/store_02.dbf RECID=6 STAMP=906989800
Cataloged datafile copy
Datafile copy file name=/u01/app/oracle/oradata/oradu/pitr01.dbf RECID=7 STAMP=906989800
Datafile 2 switched to datafile copy
Input datafile copy RECID=1 STAMP=906989800 file name=/u01/app/oracle/oradata/oradu/sysaux01.dbf
Datafile 3 switched to datafile copy
Input datafile copy RECID=2 STAMP=906989800 file name=/u01/app/oracle/oradata/oradu/undotbs01.dbf
Datafile 4 switched to datafile copy
Input datafile copy RECID=3 STAMP=906989800 file name=/u01/app/oracle/oradata/oradu/users01.dbf
Datafile 5 switched to datafile copy
Input datafile copy RECID=4 STAMP=906989800 file name=/u01/app/oracle/oradata/oradu/test.dbf
Datafile 6 switched to datafile copy
Input datafile copy RECID=5 STAMP=906989800 file name=/u01/app/oracle/oradata/oradu/store_01.dbf
Datafile 7 switched to datafile copy
Input datafile copy RECID=6 STAMP=906989800 file name=/u01/app/oracle/oradata/oradu/store_02.dbf
Datafile 8 switched to datafile copy
Input datafile copy RECID=7 STAMP=906989800 file name=/u01/app/oracle/oradata/oradu/pitr01.dbf
Reenabling controlfile options for auxiliary database
Executing: alter database add supplemental log data
Contents of Memory Script:
{
Alter clone database open resetlogs
}
Executing Memory Script
Database opened
Finished Duplicate Db at 20-MAR-16
RMAN >
5. Verify whether the migration is successful
-- execute in auxiliary db
SQL > select name,open_mode from v$database
NAME OPEN_MODE
--
ORADU READ WRITE
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