Hi Elgis,<br><br>Thanks for your reply. I run Oracle 8.1.6 on IBM RS 6000 SP running AIX 4.3.2. Due to increase in users and applications, I needed to increase my PROCESSES parameter in Oracle and couldn't because I suspect I don't have enough semaphores on the O/S.<br><br>In my experience the file to edit is /etc/system. However, this file does not exist on my system. I wonder if it is called a different name or if it resides on another location on AIX?<br><br>Grateful for your comments.<br><br>Dare.