ORA-07251

Error: ORA-07251: spcre: semget error, could not allocate any semaphores.

Causa: SEMGET failed to even allocate a single semaphore. Either they are all in use or the system is not configured to have any semaphores.

Acción: Check to see if all semaphores are in use. Check to see if system is configured to have semaphores. Check errno.