ORA-16642: DB_UNIQUE_NAME mismatch

admin

ORA-16642:DB_UNIQUE_NAME mismatch
Cause: The expected DB_UNIQUE_NAME value did not match theactual DB_
UNIQUE_NAME value for the database that the broker contacted using the
connect identifier that was associated with that database.
Action: Verifythat the connect identifier correctly connects to the intended
database. Verify that the name of the database the broker expects to find bythat
connect identifier matches the actual DB_UNIQUE_NAME for that database.