Back to back converter/interpreter

This new function allows for a more consistent look to the JCL listing, since all statements are processed at essentially the same time and all statements, even JECL statements, are assigned a number. TYPRUN=SCAN is more complete and the OUTPUT JESDS keyword is honored if a job fails with a JCL error. Many of these benefits already existed with ThruPut Manager, since analysis normally takes place right after conversion and that does include the Interpreter phase. This function is probably worth consideration because it does provide some performance benefit by moving the Converter out of the JES2 address space into one or more dedicated C/I address spaces and only driving the Interpreter once.

This function may be turned on by specifying the JOBDEF INTERPRET=JES initialization statement within JES2, but will not take effect unless all members of the JESplex are at the z/OS 2.1 level. Care must be exercised prior to enabling this feature if certain SMS ACS exits or SMF exits, such as IEFUJV, are being used to initialize an environment that is later used by other SMF exits, such as IEFUJI or IEFACTRT. These exits will no longer be driven in the same address space, perhaps not even on the same z/OS image.

With ThruPut Manager

ThruPut Manager supports Back to Back Converter/Interpreter and when this function is on the only difference is that the Interpreter is no longer driven in either the Analyzer or the Initiator address spaces and, instead, the necessary data is read from the JES2 SPOOL.