> IEFOPZxx allows you to define "pairs" of libraries, where the paired library > is concatenated ahead of the original. F'rinstance: > > //STEPLIB DD DISP=SHR,DSN=GOODOLD.COBOLPDS.LOADLIB > > In IEFOPZxx, we define DUMBNEW.COBOL5.PDSELOAD as a pair to > GOODOLD.COBOLPDS.LOADLIB. So whenever the system sees GOODOLD in a STEPLIB > or JOBLIB, allocation will > automagically concatenate DUMBNEW ahead of it, and VIOLA! Conversion to > COBOL 5 PDSE's, without changing the STEPLIB in thousands of jobs. No need > to recompile everything at once, > you can phase in the new compiler. This also works great for new ARCH > levels, so if you have multiple CEC's, you can upgrade each CEC to the new > ARCH level, again without recompiling > everything. > > There are other uses, but if I told you, I'd have to kill you.
Sounds like an excellent opportunity to thoroughly confuse developers, testers and probably every else in the IT department: "I applied the change to this program, but the tests just won't reflect the change. I checked the JCL again and again but don't understand why it isn't working..?" Or: "We changed the program and scanned all the JCL to find every job that allocates the library the program is on and we changed those jobs too so we are confident we can bring this to production now." I'm not sure I would recommend using this feature to anyone or in any situation that isn't already desperate. Fred! ----------------------------------------------------------------- ATTENTION: The information in this electronic mail message is private and confidential, and only intended for the addressee. Should you receive this message by mistake, you are hereby notified that any disclosure, reproduction, distribution or use of this message is strictly prohibited. Please inform the sender by reply transmission and delete the message without copying or opening it. Messages and attachments are scanned for all viruses known. If this message contains password-protected attachments, the files have NOT been scanned for viruses by the ING mail domain. Always scan attachments before opening them. ----------------------------------------------------------------- ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
