Clustered ASM instances for 11g onwards can be upgraded using a rolling upgrade.
ALTER SYSTEM START ROLLING MIGRATION TO number;
I want to upgrade the asm version from 11.1.0.7 to 11.2.0.0
Alter system start rolling migration to 11.2.0.0.0;
Ones node rolling migration is enabled you can be shutdown, upgraded and started.
Do not perform following operation when asm is in rolling migration mode:
- Mount and dismount of the disk groups.
- Open, close, resize, and delete of database files.
- Access to local fixed views and fixed packages.
The current status of the ASM cluster can be determined using the following query.
select sys_context(‘sys_cluster_properties’,’cluster_state’) from dual;
After upgradation on all nodes. you can stop the rolling migration
ALTER sYSTEM STOP ROLLING MIGRATION;
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