The customer's server has 1GB of ram.
Unfortuately, it also is the web server, so IIS is running on it.

I upped the buffers to 400 and the locks to 40000.
The service reported:
08:47:27 Onconfig parameter RA_PAGES modified from 4 to 8.
08:47:27 Onconfig parameter RA_THRESHOLD modified from 2 to 4.

I don't know how far I should push it.
>
> Only 200 BUFFERS seems a bit too few . . .. how much physical memory
> is on your server?
>
> Any way to see what process is hitting the ovrlock condition??
>

sending to informix-list