We’ve had this problem many times. We’ve found that the only way to get rid of it is to:
– Stop all processes and site daemons
– Copy the $HCISITEDIR/exec folder to something else (e.g. $HCISITEDIR/exec1)
– Delete the $HCISITEDIR/exec folder
– Copy $HCISITEDIR/exec1 back to $HCISITEDIR/exec
– Restart site daemons and processes
Don’t ask me why it works, I’ve no idea, it’s just something I tried one day. Maybe deleting the exec directory gets rid of the broken semaphore links?
Also, check your system semaphore parameters in /etc/system to make sure they are set to the recommended levels.