How To Fix HH026 - 'SINGLE_CPU_VP' incorrectly configured with regard to 'NUMCPUVPS'

HH026 - Overview

• Message type: E = Error

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

• Message number: 026

• Message text: 'SINGLE_CPU_VP' incorrectly configured with regard to 'NUMCPUVPS'

What causes this issue?

ONCONFIG parameter SINGLE_CPU_VP was not configured correctly:
SINGLE_CPU_VP should be '1' if the ONCONFIG parameter
NUMCPUVPS is also '1'. Otherwise SINGLE_CPU_VP should be '0'.
An incorrect configuration of SINGLE_CPU_VP can result in a loss of
performance.
CAUTION: Due to an Informix bug, this single check could under certain
circumstances (!) display an incorrect configuration of the
'<CONFIG. table>' value although the configuration is correct in the
ONCONFIG file (and the database was started up) (see Note 61150).
To be on the safe side, proceed as described below.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

To set SINGLE_CPU_VP to the recommended value, edit (as user
'informix') the file '$INFORMIXDIR/etc/$ONCONFIG'.
CAUTION: The change only becomes active when the database is started
up.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message HH026 - 'SINGLE_CPU_VP' incorrectly configured with regard to 'NUMCPUVPS' ?

  The SAP error message HH026 indicates that there is a configuration issue related to the number of CPU virtual processors (NUMCPUVPS) in the SAP system. This error typically arises in environments where SAP is running on virtual machines, particularly in scenarios involving SAP NetWeaver or SAP HANA.
  
  Cause:
  The error HH026 'SINGLE_CPU_VP' incorrectly configured with regard to 'NUMCPUVPS' usually occurs due to one of the following reasons:
  
  
  Incorrect Configuration: The system is configured to use a single CPU virtual processor (SINGLE_CPU_VP), but the NUMCPUVPS parameter is set to a value greater than 1. This mismatch leads to the error.
  
  
  Virtual Machine Settings: The underlying virtual machine may not be configured correctly to support the number of virtual CPUs that the SAP system is trying to use.
  
  
  SAP Kernel Version: The version of the SAP kernel may not support the current configuration, especially if there have been recent changes to the system.
  
  
  
  Solution:
  To resolve the HH026 error,