How to fix the Oracle error ORA-07264: spwat: semop error, unable to decrement semaphore.?

In this post, you’ll learn more about the Oracle ErrorORA-07264: spwat: semop error, unable to decrement semaphore. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-07264: spwat: semop error, unable to decrement semaphore.

Reason for the Error ORA-07264: spwat: semop error, unable to decrement semaphore.

Semop system call returned an error. Semaphore set may not exist.

How to fix the Error ORA-07264: spwat: semop error, unable to decrement semaphore. ?

You can fix this error in Oracle by following the below steps

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.