Oracle : Ошибка ORA-07264

"spwat: semop error, unable to decrement semaphore."
*Cause: Semop system call returned an error. Semaphore set may not exist.
*Action: Check errno. Semaphore ID is returned in sercose[0]. Verify
semaphore set exists. A possible cause for this error is that a
"shutdown abort" was done while this process was running.

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