Oracle : Ошибка ORA-16662

16662, 0000, "network timeout when contacting a database"
*Cause: In response to the issued command, the Data Guard broker attempted
to contact a database in the Data Guard configuration. That
attempt failed because there was no response from that database
after the period of time specified by the CommunicationTimeout
configuration property.
*Action: Check the Data Guard broker log for the details of the failure.
Fix the problem and try the command again.

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