1. Installation and Upgrade Guide
  2. Upgrading Oracle Grid Infrastructure
  3. Downgrading Oracle Clusterware After an Upgrade
  4. Options for Oracle Grid Infrastructure Downgrades

11.13.1 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.

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