IBM E16RMLL-I - Tivoli Storage Manager, Руководство по внедрению

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Chapter 5. Database and recovery log
211
If you are following the steps in this chapter, the DBBACKUPTRIGGER will
already start database backups as needed. However, we also recommend that
you run a
full
database backup on a regular basis (at the least, daily). If you
make a number of database configuration changes, such as we did earlier in this
chapter, you should run a backup immediately afterwards. You should not rely
solely on the DBBACKUPTRIGGER to produce your regular backups. The
DBBACKUPTRIGGER is a safeguard to stop your recovery log from filling up.
You will also see how to back up the database at least once every night as a
scheduled operation in Chapter 12, “Scheduling” on page 371.
Use the backup db command to back up a Tivoli Storage Manager database to
sequential access storage volumes. You can use backup db to run one of the
following types of backup:
򐂰
Full backup (TYPE=FULL): Backs up the entire Tivoli Storage Manager
database. Example 5-18 shows how to perform a full backup operation.
򐂰 Incremental backup (TYPE=INCREMENTAL): Backs up only those database
pages that have been added or changed since the last time the database was
backed up.
򐂰
DBSnapshot (TYPE=DBSNAPSHOT): Specifies that you want to run a full
snapshot database backup. The entire contents of the database are copied
and a new snapshot database backup is created without interrupting the
existing full and incremental backup series for the database. Example 5-19
shows how to perform a snapshot backup operation.
Example 5-18 Creating a full database backup
tsm: ATLANTIC>
backup db type=full devclass=lto2-dc wait=yes
ANR0984I Process 14 for DATABASE BACKUP started in the FOREGROUND at 11:33:54.
ANR2280I Full database backup started as process 14.
ANR4554I Backed up 960 of 2001 database pages.
ANR4554I Backed up 1920 of 2001 database pages.
ANR4550I Full database backup (process 14) complete, 2001 pages copied.
ANR0985I Process 14 for DATABASE BACKUP running in the FOREGROUND completed
with completion state SUCCESS at 11:34:30.
Example 5-19 Creating a database snapshot
tsm: ATLANTIC>
backup db type=dbsnapshot devclass=lto2-dc wait=yes
ANR0984I Process 15 for DATABASE BACKUP started in the FOREGROUND at 11:39:31.
ANR2287I Snapshot database backup started as process 15.
ANR4554I Backed up 960 of 2002 database pages.
ANR4554I Backed up 1920 of 2002 database pages.