Oracle : Ошибка ORA-23312

"not the masterdef according to %s"
*Cause: The group name is null, the group name is misspelled, the
invocation or given database is not the masterdef, or one of the
masters does not believe the invocation database is the masterdef.
*Action: If the given group name and masterdef were both correct,
connect to the masterdef and retry the request, or relocate the
masterdef at the (errant) databases using relocate_masterdef.

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