KAIO error on DEC Unix v3.2

We are getting the following error in our informix log... KAIO out of OS resources, errno = 35 errrno 35 is described in errno.h as "Operation would block". I have a feeling we are running into a Unix kernel parameter that needs to be adjusted. If anyone has any idea which kernel parameters should be examined, please send me a private Email at 'rbrooks@ccnotes.ccity.com' Thanks in advance, Ray Brooks Circuit City Stores, Inc.