The Query Processor configuration file that you create is read by the SYSTEM/MCPSQL/CONFIG library when the library is initialized. The information in the Query Processor configuration file is used by the system to determine the version of the Query Processor software to which a particular user has access.

If you alter the contents of the Query Processor configuration file while the SYSTEM/MCPSQL/CONFIG library is frozen, the system automatically re-reads the file.

Users currently running the Query Processor software are not affected by the change in the Query Processor configuration file, but the new specifications are used for any subsequent attempts to link to a library.

To determine the name of the current Query Processor configuration file and to verify its contents, run the SYSTEM/MCPSQL/CONFIG program. The system displays the name and location of the Query Processor configuration file and displays a message if there are any errors in the file. Errors in your Query Processor configuration file can indicate that the installation process was not completed correctly.