Either way, it's before the job executes. I read the original post as requesting changes during execution.
For changes prior to executions, there are many good options. As usual, the devil is in the details, and it's impossible to judge without knowing what OP really wants. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Allan Staller <00000632b4c7ca99-dmarc-requ...@listserv.ua.edu> Sent: Monday, November 11, 2024 10:04 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Modifying JCL on the fly Caution: This email did not originate from George Mason’s mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. Classification: Confidential OOPs! Exit 4 may be Simpler, not similar.... -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Allan Staller Sent: Monday, November 11, 2024 8:36 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Modifying JCL on the fly [CAUTION: This Email is from outside the Organization. Unless you trust the sender, Don’t click links or open attachments as it may be a Phishing email, which can steal your Information and compromise your Computer.] Classification: Confidential JCL has already been converted. Text units can be added/deleted as needed (again, very similar to dynamic allocation. EXIT4 is (possibly) similar. When I actually did this at a former employer, EXIT6 needed to be modified. HTH, -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of David Spiegel Sent: Monday, November 11, 2024 8:11 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Modifying JCL on the fly [CAUTION: This Email is from outside the Organization. Unless you trust the sender, Don’t click links or open attachments as it may be a Phishing email, which can steal your Information and compromise your Computer.] Hi Allan, Why is JES2 Exit 6 better than Exit 4 for this purpose? Regards, David On 11/11/2024 08:59, Allan Staller wrote: > Classification: Confidential > > IEFUSI is too late in the process. I suggest JES2 EXIT6 (or EXIT26?) > depending on the JES2 Environment. > In both cases, you must be prepared to manipulate the INTERPRETER internal > text (very similar in concept to dynamic allocation). > > HTH, > > -----Original Message----- > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On > Behalf Of Steff Gladstone > Sent: Sunday, November 10, 2024 2:51 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Modifying JCL on the fly > > [CAUTION: This Email is from outside the Organization. Unless you > trust the sender, Don’t click links or open attachments as it may be a > Phishing email, which can steal your Information and compromise your > Computer.] > > What is the best way of modifying JCL after the job has been > submitted, in order to conditionally add another DDNAME to a JOB STEP? Or > perhaps adding parameters to the PARM string on the EXEC statement. > > We were thinking of using the IEFUSI exit point, allocating a file > dynamically before the main program of the job-step is attached. I > gather there are also JES2 exits (are they simple exits or the more > flexible exit > points?) that are appropriate to the task and would be interested to hear > advice from other system programmers. > > Two other questions: are these exits specified in the PARMLIB or via some > other mechanism? And what happens if the exit fails in some way? What > action does the system take? > > Thanks in advance, > Steff Gladstone > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ::DISCLAIMER:: > ________________________________ > The contents of this e-mail and any attachment(s) are confidential and > intended for the named recipient(s) only. E-mail transmission is not > guaranteed to be secure or error-free as information could be intercepted, > corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses > in transmission. The e mail and its contents (with or without referred > errors) shall therefore not attach any liability on the originator or HCL or > its affiliates. Views or opinions, if any, presented in this email are solely > those of the author and may not necessarily reflect the views or opinions of > HCL or its affiliates. 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