Performing Oracle RAC Incremental Backup Operations

An Oracle incremental backup contains the changed data from the last full backup. Incremental backups use less media and resources than full backups.

In a cumulative level n backup, only the data that differs from the most recent backup at level n-1 or lower, is backed up.

For more information, see Incremental.

Before You Begin

• If you want to perform an offline backup and have an Oracle clusterware environment, to all client nodes, add the additional setting as shown in the following table.

  For instructions on how to add additional settings from the CommCell Console, see Adding or Modifying Additional Settings from the CommCell Console.

  Property	Value
  Name	ORA_CRS_HOME
  Category	OracleAgent
  Type	String
  Value	Y

Procedure

1. From the CommCell Browser, expand Client Computers > client> Oracle RAC >instance.

2. Right-click the subclient and click Backup.

3. On the Backup Options for Subclient dialog box, select the backup type and job initiation:

   1. In the Backup Type section, select Incremental.

   2. If you selected the Cumulative check box, specify the backup incremental level in the Oracle Incremental Level box.

   3. 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 on configuring a backup schedule, see Schedule Backups.

4. Optional: Select advanced backup options.

   1. Click Advanced.

      The Advanced Backup Options dialog box appears.

   2. On the Oracle Options tab, in the Backup Tag box, enter a unique tag.

      You can include variables in the tag. For supported tag variables, see Oracle Tag Variables.

   3. To set the maximum number of bytes that the software reads during the backup operation, in the Throttle RMAN disk read (MB/sec) box, type the number of bytes. For more information, see Advanced Backup Options.

   4. Click OK to close the Advanced Backup Options dialog box.

5. Optional: View or customize the RMAN script that is generated from the selected options. For instructions, see Viewing Backup RMAN Scripts and Customizing Backup RMAN Scripts.

6. Click OK to close the Backup Options dialog box.