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Continue to ChatTNS-12564 Errors and the Importance of the Parameter LOCAL_LISTENER During a Dataguard Switchover https://rene-ace.com/the-importance-of-the-parameter-local_listener-during-a-dataguard-switchover/
TNS-12564 Errors and the Importance of the Parameter LOCAL_LISTENER During a Dataguard Switchover https://rene-ace.com/the-importance-of-the-parameter-local_listener-during-a-dataguard-switchover/