Oracle : Ошибка ORA-09763

"osnmpx: send/receive error exchanging Mach ports."
*Cause: The Mach driver failed to exchange port information with the
other side of the connection. Either msg_send (sercose[0] == 1)
or msg_receive (sercose[0] == 2) failed.
*Action: Check return code in sercerrno. Make sure both sides of the
connection are still running.

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