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Configuring Streams for Backups

The Oracle RAC Agent allows you to perform parallel backups across multiple RAC nodes as a matter of design. Unlike other agents, this agent requires just one subclient and one storage policy per type used (i.e., data, log) along with the requisite number of allocated streams to perform parallel backups. As such, you can load-balance your backups across all or selected nodes of your RAC database and thereby take advantage of the strengths of each node.

Keep in mind that the same number of streams used for performing a backup will be needed to restore the data.

Note: The following configuration might not work as expected because the stream reservation happens immediately for each physical client:

  • You use a SCAN connect string across a multi-node Oracle RAC instance
  • You perform a LAN-free backup, or you have a preferred MediaAgent for each physical client

Procedure

Data Backups

  1. From the CommCell Browser, navigate to Client Computers | <RAC Client> | <Instance>.
  2. Right-click the <Subclient>, and then click Properties.
  3. Click the Storage Device tab.
  4. Double click the Stream box of the desired instance, and then type or select the number of streams.
  5. Click OK.

Log Backups

  1. From the CommCell Browser, navigate to Client Computers | <RAC Client>.
  2. Right-click the <Instance>, and then click Properties.
  3. Click the Logs Backup tab.
  4. Double click the Stream box of the desired instance, and then type or select the number of streams.
  5. Click OK.

Last modified: 10/29/2018 1:15:45 PM