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ONCONFIG File Templates

The database server provides a template for a configuration file that contains initial values for many of the ONCONFIG parameters. You can copy and tailor the template to your specific configuration.

IBM Informix Extended Parallel Server provides two templates for the ONCONFIG file that you can copy and tailor to your specific configuration:

If you omit a parameter value in your copy of the configuration file, the database server either uses default values in onconfig.std or calculates values based on other parameter values. For information on the order of files in which the database server looks for configuration values during initialization, refer to the chapter on initializing the database server in the IBM Informix: Administrator's Guide.

Warning:
Do not modify onconfig.std. The database server provides the onconfig.std configuration file as a template and not as a functional configuration.

The following table lists the locations of the ONCONFIG and onconfig.std files.

ONCONFIG File
Template File
$INFORMIXDIR/etc/$ONCONFIG
$INFORMIXDIR/etc/onconfig.std
$INFORMIXDIR/etc/onconfig.xps
To prepare the ONCONFIG file
  1. Copy the pertinent template file:
    • onconfig.std
    • onconfig.xps
  2. Modify the copy of the template file.
  3. Set the ONCONFIG environment variable to the name of the copy of the pertinent template file.

    If you do not set ONCONFIG, the default filename is onconfig.

For more details on why you might want to modify the default configuration parameters, refer to the chapter on installing and configuring the database server in the IBM Informix: Administrator's Guide.

For more information about the ONCONFIG environment variable, see the IBM Informix: Guide to SQL Reference. For more information about the ONCONFIG files, see Appendix A. Files That the Database Server Uses.

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