Options for Oracle Grid Infrastructure Downgrades

You can downgrade Oracle Grid Infrastructure 19c to earlier releases.

Downgrade options include the following earlier releases:

• Oracle Grid Infrastructure downgrade to Oracle Grid Infrastructure 18c.

• Oracle Grid Infrastructure downgrade to Oracle Grid Infrastructure 12c Release 2 (12.2).

• 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 19c 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 19c to Oracle Grid Infrastructure 18c, the later release RAC databases already registered with Oracle Grid Infrastructure will not start after the downgrade.