6.4 About Migrating Existing Oracle ASM Instances

You can use Oracle Automatic Storage Management Configuration Assistant (ASMCA) to upgrade the existing Oracle ASM instance to Oracle ASM 12c release 1 (12.1) or higher.

ASMCA is located in the path Grid_home\bin. You can also use ASMCA to configure failure groups, and Oracle ASM volumes.

Note:

You must first shut down all database instances and applications on the node with the existing Oracle ASM instance before upgrading it.

During installation, if you chose to use Oracle ASM and ASMCA detects that there is a prior Oracle ASM release installed in another Oracle ASM home, then after installing the Oracle ASM 21c software, you can start ASMCA to upgrade the existing Oracle ASM instance.

On an existing Oracle Clusterware or Oracle RAC installation, if the prior release of Oracle ASM instances on all nodes is Oracle ASM 12c release 1 or higher, then you are provided with the option to perform a rolling upgrade of Oracle ASM instances. If the prior release of Oracle ASM instances on an Oracle RAC installation are from an Oracle ASM release prior to Oracle ASM 11g release 1, then rolling upgrades cannot be performed. Oracle ASM is then upgraded on all nodes to 21c.