# Oracle Data Guard Configuration

Collect the list of all the primary instances and the standby instances that are part of the configuration, along with the user credentials for each instance.

An archivelog subclient needs to be created on each database site. Create an archivelog subclient that contains all the primary nodes, and similarly configure another archivelog subclient that contains all the standby nodes. If there are multiple standby sites, each site needs to have an archivelog subclient which backs up logs from that site and that has the archivelog delete option enabled.

The archivelog subclient for the primary site should have streams configured for only the primary nodes and the streams for the remaining nodes should be set to 0. For the standby site, configure streams for the standby nodes only and set the remaining node streams to 0 in that standby archivelog subclient. It is a best practice to use the same schedule for all the archivelog subclients and use the archivelog delete option.

## Backup Operations Run Locally and Use Local Storage

In this case, the backup operations are run locally.

1. Create a pseudoclient for Oracle Data Guard.

   You must add all of the primary and standby databases to the pseudoclient.

2. Create a subclient for the primary database and a subclient for the standby database. For more information, see Adding Oracle Data Guard Subclients.

## Backup Operations Run on the Primary or Standby Server

1. Create a pseudoclient for Oracle Data Guard.

   You must add all of the primary and standby databases to the pseudoclient.

2. Specify the servers that run backups in an Oracle Data Guard configuration.

3. If your primary and standby databases are in different data centers, you must configure a region-based backup plan for all clients that host the primary and standby databases. For more information, see Configuring a Client Region-Based Backup Plan for Oracle Data Guard.

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