How To Fix HH042 - Edit the Informix ONCONFIG file

HH042 - Overview

• Message type: E = Error

• Message class: HH - (Long) text for check tool 'infcfgcheck'

• Message number: 042

• Message text: Edit the Informix ONCONFIG file

What causes this issue?

ONCONFIG parameter 'OPTCOMPIND' differs from the recommended value.
The value of parameter 'OPTCOMPIND' ('0','1','2') affects the behavior
of the (cost-based) Informix optimizer.
An R/3 database must be configured for 'OPTCOMPIND' to adhere to
the value recommended by SAP.
A configuration which differs from the recommendation will result in
a number of 'sequencial scans', i.e. the performance will deteriorate
significantly!

System Response

How to fix this error?

To change 'OPTCOMPIND', edit (as user
'informix') the file '$INFORMIXDIR/etc/$ONCONFIG'.
CAUTION: The change will only become active when the database has been
started up.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message HH042 - Edit the Informix ONCONFIG file ?

  The SAP error message HH042, which states "Edit the Informix ONCONFIG file," typically occurs in environments where SAP applications are using Informix as the database management system. This error indicates that there is a configuration issue with the Informix ONCONFIG file, which is crucial for the proper functioning of the Informix database.
  
  Cause:
  The error can be caused by several factors, including:
  
  Missing or Incorrect Configuration Parameters: The ONCONFIG file may be missing essential parameters or have incorrect values that do not meet the requirements of the SAP application.
  Database Environment Issues: The database environment may not be set up correctly, leading to misconfigurations in the ONCONFIG file.
  Version Compatibility: There may be compatibility issues between the SAP application and the version of Informix being used.
  Resource Limitations: Insufficient resources (like memory or disk space) may lead to the need for adjustments in the ONCONFIG file.
  
  
  Solution:
  To resolve the HH042 error, follow these steps:
  
  
  Locate the ONCONFIG File: