Options for Oracle Grid Infrastructure Downgrades

Understand the downgrade options for Oracle Grid Infrastructure in this release.

Downgrade options from Oracle Grid Infrastructure 12c to earlier releases include the following:

  • Oracle Grid Infrastructure downgrade to Oracle Grid Infrastructure 12c Release 1 (12.1).

  • Oracle Grid Infrastructure downgrade to Oracle Grid Infrastructure 11g Release 2 (11.2). Because all cluster configurations in Oracle Grid Infrastructure 12c Release 2 (12.2) are Oracle Flex Clusters, when you downgrade to Oracle Grid Infrastructure 11g Release 2 (11.2), you downgrade from an Oracle Flex cluster configuration to a Standard cluster configuration.

Note:

When you downgrade Oracle Grid Infrastructure to an earlier release, for example from Oracle Grid Infrastructure 12c Release 2 (12.2) to Oracle Grid Infrastructure 12c Release 1 (12.1), the later release RAC databases already registered with Oracle Grid Infrastructure will not start after the downgrade.