Oracle Solution for Error ora-15150

Solution for Oracle Error ORA-15150

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

What triggered the Error:

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

What should we do to fix it:

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