Definition
The
NOAGE parameter in the Informix ONCONFIG file defines how much processing resources are allocated to long-running database processes. However, this parameter is not supported by all operating systems and you can achieve the same effect by tuning the operating system itself.Use
For up-to-date recommendations, see SAP Note 41360.

From our experience at SAP, we recommend you not to use this feature.
See also:
The Informix release notes in the following directory: