Hi,

My environment is :
Operating system version:AIX 5.2
IDS 7.31UD1
The shared memory uses approximately about 1.5 GB.

Out application is unabled to connect database and I find the error(out of the shared memory segment) in the message log. But the IDS didn't bring down the server,it still online. I can't find what make this happening. So how do I avoid this kind of error and what kind of parameter that I should take care?

Thanks!!

The root cause of the problem is that AIX can't allocate a shared-memory segment, or one that large. Has this problem surfaced only recently?

Yes,the server did not allocate another share memory segment and the problem is recently happened

Thanks!!

Check your kernel parameters for the maximum number of shared memory segments.

You are using the the 32-bit version : Check the machine specific notes for your maximum addressable shared memory.

Place SHMTOTAL in your onconfig to limit the shared memory resources of Informix to the actual amount you can get from the operating system.

Do not swap, it kills Informix's performance.

Best regards

Koen