Use this variable to specify the file extension used for your data files.
When AcuXDBC looks for a file, it looks only at files with the extension specified here. If you do not include this variable in your configuration file, AcuXDBC looks for data files with no extension in the data directory indicated with FILE_PREFIX. You can always specify the exact filename with suffix when using the xdbcutil program or the addfile script.
Note that files residing on remote UNIX servers must have lowercase file extensions.