The COMMIT keyword allows the processing of files under commitment control. An optional parameter, rpg_name, may be specified. The parameter is implicitly defined as a field of type indicator (that is, a character field of length one), and is initialized by RPG to '0'.
By specifying the optional parameter, you can control at run time whether to enable commitment control. If the parameter contains a '1', the file will be opened with the COMMIT indication on, otherwise the file will be opened without COMMIT. The parameter must be set prior to opening the file. If the file is opened at program initialization, the COMMIT parameter can be passed as a call parameter or defined as an external indicator. If the file is opened explicitly, using the OPEN operation in the calculation specifications, the parameter can be set prior to the OPEN operation.
Use the COMMIT and ROLBK operation codes to group changes to this file and other files currently under commitment control so that changes all happen together, or do not happen at all.