Joined: 26 Apr 2004 Posts: 4650 Location: Raleigh, NC, USA
Look at your TSO logon JCL. Look for the library name and member name that is executed for your TSO session. Edit that member. Find where the datasets are allocated for SYSPROC and/or SYSEXEC. Insert your library into the allocation list for either DD.
Look further down the member. Is there a place where it calls another CLIST or REXX exec? This is where you can instead call your REXX exec. Maybe there's a place where the logon CLIST calls a particular member from your own library by default. Otherwise, you'll have to add a call to your own logon REXX exec.