How to fix the Oracle error ORA-15003: diskgroup “string” already mounted in another lock name space?
In this post, you’ll learn more about the Oracle ErrorORA-15003: diskgroup “string” already mounted in another lock name space with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-15003: diskgroup “string” already mounted in another lock name space
Reason for the Error ORA-15003: diskgroup “string” already mounted in another lock name space
The diskgroup could not be mounted by the ASM instance because it was operating in a lockspace different than another existing ASM instance which had already mounted the diskgroup.
How to fix the Error ORA-15003: diskgroup “string” already mounted in another lock name space ?
You can fix this error in Oracle by following the below steps
Check the LOCK_NAME_SPACE initialization parameter value, or dismount the diskgroup from the other ASM instances.
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