16642, 0000, "DB_UNIQUE_NAME mismatch"
*Cause: The expected DB_UNIQUE_NAME value did not match the actual
DB_UNIQUE_NAME value for the database that the broker contacted
using the connect identifier that was associated with that
*Action: Verify that the connect identifier correctly connects to the
intended database. Verify that the name of the database the
broker expects to find by that connect identifier matches the
actual DB_UNIQUE_NAME for that database.