New configuration parameters have been added in 12.5.4. When starting the previous version of the Adaptive Server, use the old .cfg configuration file. If you forget to run the 12.5.x installmaster before starting Adaptive Server, an error message displays at startup. Running the 12.5.x version of installmaster removes configuration parameters that belong to 12.5.4, by deleting sysconfigures rows for configuration parameters that do not exist in syscurconfigs. After running installmaster the error messages will no longer appear when you start the server.