Question & Answer
Question
How do I perform a DB2 tablespace level backup, restore and rollforward ?
Answer
In order to be able to perform a tablespace level backup, you need to enable the database for archival logging.
Example:
$ db2 update db cfg for sample using LOGARCHMETH1 disk:/home/db2inst1/logs
DB20000I The UPDATE DATABASE CONFIGURATION command completed successfully.
Once the database is enabled for log archival, to perform a tablespace level backup, specify the tablespace clause along with the tablespace name in your backup command.
Example:
To take an Offline tablespace level backup of tablespace USERSPACE1:
$ db2 "backup db sample tablespace (USERSPACE1)"
Backup successful. The timestamp for this backup image is : 20141013180433
To take an Online tablespace level backup of tablespaces SYSCATSPACE and USERSPACE1:
$ db2 connect to sample
Database Connection Information
Database server = DB2/LINUXX8664 10.1.4
SQL authorization ID = DB2V10
Local database alias = SAMPLE
$ db2 "backup db sample tablespace (SYSCATSPACE, USERSPACE1) online"
Backup successful. The timestamp for this backup image is : 20141013180552
Similar to the backup, to perform a restore and rollforward of your tablespace, specify the tablespace clause in your restore, rollforward commands.
Example:
To restore tablespace USERSPACE1 from a backup image (database level or tablespace level):
$ db2 "restore db sample tablespace (USERSPACE1) taken at 20141013180552"
DB20000I The RESTORE DATABASE command completed successfully.
After the restore, the tablespace is now is a rollforward pending status:
$ db2 rollforward db sample query status
Rollforward Status
Input database alias = sample
Number of nodes have returned status = 1
Node number = 0
Rollforward status = TBS pending
Next log file to be read =
Log files processed = -
Last committed transaction = 1970-01-01-00.00.00.000000 UTC
You can get this information from db2pd -db <dbname> -tablespaces as well:
Example:
$ db2pd -db sample -tablespaces
Database Partition 0 -- Database SAMPLE -- Active -- Up 0 days 00:00:07 -- Date 2014-10-13-18.14.30.750892
Tablespace Configuration:
Address Id Type Content PageSz ExtentSz Auto Prefetch BufID BufIDDisk FSC NumCntrs MaxStripe LastConsecPg Name
0x00007FFF61CEC860 0 DMS Regular 8192 4 Yes 4 1 1 Off 1 0 3 SYSCATSPACE
0x00007FFF61CEDFE0 1 SMS SysTmp 8192 32 Yes 32 1 1 On 1 0 31 TEMPSPACE1
0x00007FFF61CF1720 2 DMS Large 8192 32 Yes 32 1 1 Off 1 0 31 USERSPACE1
0x00007FFF61CF2EA0 3 DMS Large 8192 32 Yes 32 1 1 Off 1 0 31 IBMDB2SAMPLEREL
0x00007FFF61CF4620 4 DMS Large 8192 32 Yes 32 1 1 Off 1 0 31 IBMDB2SAMPLEXML
0x00007FFF61CF5DA0 5 DMS Large 8192 4 Yes 4 1 1 Off 1 0 3 SYSTOOLSPACE
0x00007FFF61CF7520 6 SMS UsrTmp 8192 4 Yes 4 1 1 On 1 0 3 SYSTOOLSTMPSPACE
Tablespace Statistics:
Address Id TotalPgs UsablePgs UsedPgs PndFreePgs FreePgs HWM Max HWM State MinRecTime NQuiescers PathsDropped
0x00007FFF61CEC860 0 16384 16380 13264 0 3116 13264 13264 0x00000000 0 0 No
0x00007FFF61CEDFE0 1 1 1 1 0 0 0 0 0x00000000 0 0 No
0x00007FFF61CF1720 2 4096 4064 1824 0 2240 1824 1824 0x00000080 0 0 No
0x00007FFF61CF2EA0 3 4096 4064 736 0 3328 736 736 0x00000000 0 0 No
0x00007FFF61CF4620 4 4096 4064 1440 0 2624 1440 1440 0x00000000 0 0 No
0x00007FFF61CF5DA0 5 4096 4092 108 0 3984 108 108 0x00000000 0 0 No
0x00007FFF61CF7520 6 1 1 1 0 0 0 0 0x00000000 0 0 No
Tablespace state '0x00000080' corresponds to Roll Forward Pending:
$ db2tbst 0x00000080
State = Roll Forward Pending
A tablespace level rollforward can be performed online, while there are other agents connected to the database using:
$ db2 "rollforward database sample to end of logs and stop tablespace (USERSPACE1)"
Rollforward Status
Input database alias = sample
Number of nodes have returned status = 1
Node number = 0
Rollforward status = not pending
Next log file to be read =
Log files processed = -
Last committed transaction = 1970-01-01-00.00.00.000000 UTC
DB20000I The ROLLFORWARD command completed successfully.
Related Information
[{"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Component":"Database Objects\/Config - Tablespaces","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"9.8;9.7;9.5;10.1;10.5","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
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Document Information
Modified date:
16 June 2018
UID
swg21687053