How To Fix IU501 - Initialization for Informix can result in termination -> see long text

IU501 - Overview

• Message type: E = Error

• Message class: IU - Incremental Conversion (ICNV)

• Message number: 501

• Message text: Initialization for Informix can result in termination -> see long text

'ISAM-106: non-exclusive access'
In the Informix data management system, the system must be started up
before initializing the incremental conversion of one or more tables.
Otherwise the SQL error "ISAM-106: non-exclusive access" could occur.
Also read Note 66200 about this problem.
This SQL error could cause the table initialization to be terminated in
such a way that application programs that access this table no longer
function correctly.

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

If this problem already occurred, proceed as follows:
Start up the system
Initialize all the tables displayed as incorrect in the status 'Prepare
for conversion' again.
In the menu of Transaction ICNV, call 'Control->Initialization', choose
the tables in the next dialog and perform the initialization
immediately.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IU501 - Initialization for Informix can result in termination -> see long text ?

  The SAP error message IU501, which indicates that "Initialization for Informix can result in termination," typically arises in the context of SAP systems that are integrated with Informix databases. This error can occur during the initialization phase when the SAP system is trying to connect to or interact with the Informix database.
  Causes:
  
  Database Connection Issues: The SAP system may not be able to establish a connection to the Informix database due to incorrect connection parameters (hostname, port, database name, user credentials).
  Configuration Errors: There may be misconfigurations in the SAP system or Informix database settings that prevent proper initialization.
  Network Issues: Network problems, such as firewalls or routing issues, can block communication between the SAP system and the Informix database.
  Informix Database Issues: The Informix database itself may be down, misconfigured, or experiencing performance issues.
  Version Compatibility: There may be compatibility issues between the versions of SAP and Informix being used.
  
  Solutions:
  
  Check Connection Parameters: Verify that