My Oracle Support Banner

ORA-600[kffmUnlock_3] POSSIBLE WHEN DATABASE INSTANCE 10GR2 AND ASM 11G (Doc ID 756696.1)

Last updated on FEBRUARY 19, 2019

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
This problem can occur on any platform.


ASM and database instances are using different versions. Database instance runs in a 10gR2 version whereas ASM instance  on 11g version.  ASM instance is shutdowned  when there is a rebalance runing and not finished yet. 

The following rebalances causes the database instance to get ORA-600[kffmUnlock_3] exception due to an interoperability issue between 10gR2 database and 11g ASM versions.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.