Enabling Automatic Instance Discovery for Oracle Databases

Use the Enable Instance Discovery option to automatically discover databases.

CommCell instances are created for Oracle databases under the following conditions:

Enabling Automatic instance discovery ensures that newly added Oracle databases are regularly accounted for backups.

The SnapProtect software only discovers instances defined in the Oracle oratab file, which is created by Oracle at installation and acts as a database registry file. On Solaris systems, this file is normally located in the /var/opt/oracle directory and on Linux/UNIX systems, it is located in the /etc directory.

You can configure the software to automatically update the Oracle home directory after an Oracle upgrade. For information on how to configure this option, see Updating the ORACLE_HOME in SnapProtect after an Oracle Upgrade.

About This Task

By default, when you discover or create an Oracle instance, the SnapProtect software automatically creates an archive log subclient. You can disable this feature by setting an additional setting. For more information, see Disabling Automatic Archive Log Subclient Creation.

You can configure the data and log storage policies when you manually or automatically discover instances (Agent Properties dialog box, Data Storage Policy list, Log Storage  Policy list, General tab). The SnapProtect software assigns these storage policies to all instances and default subclients that you discover.

By default, the command line storage policy is set to the agent data storage policy.

The log storage policy is assigned to the Oracle instance.

The SnapProtect software assigns the data storage policy to the default subclients by looking at the following configured items:

  1. The storage policy configured for the Oracle Agent (Data Storage Policy list, Log Storage Policy list, General tab)
  2. The storage policies that are configured for a previously discovered Oracle instance (Instance Properties dialog box, Storage Device tab, Log Backup tab, Storage Policy used for all archive log backup list)
  3. The storage policy for the File System Agent default agent for the default backup set (Subclient Properties dialog box, Storage Device tab, Data Storage Policy tab, Storage Policy list)

When you add or discover an Oracle instance, the software sets the default block size to 1MB. You can change the Oracle block size. For more information, see Configuring the Oracle Block Size.


  1. From the CommCell Browser, expand Client Computers.
  2. Right-click client, and click Properties. The Client Properties dialog box is displayed.
  3. On the General tab:
    1. Check the Enable Automatic Instance Discovery check box.
    2. Optional: Configure the default data and log storage policies for all discovered instances.
      Policy Option
      Data Storage Policy Select a policy from the Data Storage Policy list.
      Log Storage Policy Select a policy from the Log Storage Policy list.
  4. Set the default data storage policy for the instance's default subclient when it has not been set. See Setting the Data Storage Policy on the Default Subclient after Discovering Oracle Instances.
  5. Set the default command line backup and log backup storage policies when they have not been set. See Setting the Log Backup and Command Line Backup Storage Policies after Discovering Oracle Instances.
  6. Optional:
  7. Click OK.