Remove shared memory of sap instance

Command: cleanipc <instance_nr> remove

However, sometimes, cleanipc fails to cleanup some semaphores saying: Semaphore Key: XX remove failed **** - errno = 1 (Not owner)

Command: cleanipc 06 remove

In this case, login as root and run the following commands:

ipcs –s | grep “the number from the semaphore”

ipcrm –s “the number from the above command”

The above command ipcrm clears up

the semaphore which was not cleared by cleanipc command when executed by <sid>adm user.

Now, if you run cleanipc again using <sid>adm, you will find that the affected semaphore

is now cleared.