Hi,

When fork fails it usally means that there are no room for more processes.

There should be some kernel parameter you can raise in AIX to allow more processes. I doubt that you are running out of processes because of high usage. It sounds like you have a program that bugged out and just keeps on forking new processes until the system dies..

Keep a close watch with the ps command and check how many processes are running and if you get more and more every day check whoes spawning them..

Just a thought..

Hope it helps

/Peter