Oracle : Ошибка ORA-12526

"TNS:listener: all appropriate instances are in restricted mode"
*Cause: Database instances supporting the service requested by the client
were in restricted mode. The Listener does not allow connections to
instances in restricted mode. This condition may be temporary, such as
during periods when database administration is performed.
*Action: Attempt the connection again. If error persists, then contact
the database administrator to change the mode of the instance,
if appropriate.

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