A DB2 differential/delta backup contains only data that is new or has changed since the last backup (full, incremental, or delta), regardless of the type. On average, DB2 differential/delta backups consume less media and use less resources than full backups.
If you want to have a differential backup that only contains the data, create a subclient for data only backups.
When the DB2 TRACKMOD parameter is set to ON and you add a new tablespace to the database, DB2 generates a SQL2426N error when you perform a delta or an incremental backup. To avoid the error, the Commvault software automatically converts the backup to a full backup when it detects that you added a new tablespace.
Procedure
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From the CommCell Browser, expand Client Computers > client> DB2 >instance > backup_set.
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Right-click the subclient and click Backup.
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On the Backup Options for Subclient dialog box, select the backup type and job initiation:
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In the Backup Type section, select Differential/Delta/Data Only.
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In the Job Initiation section, specify whether to run the backup now or if it will be scheduled.
Note
If you selected Schedule, set up the schedule.
For information about configuring a backup schedule, see Schedule Backups.
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Click OK to close the Backup Options dialog box.
