How to fix the Oracle error ORA-15150: instance lock mode ‘string’ conflicts with other ASM instance(s)?

In this post, you’ll learn more about the Oracle ErrorORA-15150: instance lock mode ‘string’ conflicts with other ASM instance(s) with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15150: instance lock mode ‘string’ conflicts with other ASM instance(s)

Reason for the Error ORA-15150: instance lock mode ‘string’ conflicts with other ASM instance(s)

Some other ASM instance used the lock name space in a conflicting mode.

How to fix the Error ORA-15150: instance lock mode ‘string’ conflicts with other ASM instance(s) ?

You can fix this error in Oracle by following the below steps

Shut down the other instance or start up in compatible mode. Alternatively, set the DB_UNIQUE_NAME initialization parameter to avoid the conflict.