We did a conversion 3 -> 2 many years ago, but it was more moving work from a Jes3 system to a Jes2 system, not converting an existing system from one to the other.
It really depends on the complexity of the exploitation of the Jes3 constructs - How your Global/Local setup is, Do you depend on Setup to have resources in place, do you schedule with a scheduling package or use DJC's etc.etc. Biggest problem we faced was not the technical migration, but the education of our users of JCL and exposing them to new concepts. We had identified the risk there but it turned out to be a bigger challenge then we (the technicians) expected. Jerry Whitteridge Manager Mainframe Systems & Storage Albertsons - Safeway Inc. 925 738 9443 Corporate Tieline - 89443 If you feel in control you just aren't going fast enough. -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Cheryl Watson Sent: Thursday, January 14, 2016 6:14 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: JES3 to JES2 Migration (was JES2 to JES3 Migration) Yes, Lizette - I meant to say JES3 to JES2. Thanks! Has anyone who has done this have an estimate of the amount of time it might take, and the effort? Cheryl -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Lizette Koehler Sent: Thursday, January 14, 2016 9:08 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: JES2 to JES3 Migration Cheryl, I am guessing you meant the subject to say JES3 to JES2 migration??? The one challenge I see is the JCL is different between the two environments. JES2 use /* (eg. /*ROUTE) and JES3 uses //* (eg //*MAIN) JES2 has no master JES system, JES3 has a Master. So in JES2 jobs can either run where the JCL is converted or anywhere in the JESMAS. There is also the concept in JES3 that until all resources available, the job will not run. JES2 it can run and wind up waiting on resources. Those are about the differences I can think of off the top of my head. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] > On Behalf Of Cheryl Watson > Sent: Thursday, January 14, 2016 7:01 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: JES2 to JES3 Migration > > A customer asked us for suggestions for performing a JES3 to JES2 migration. > Are there products that will help in this, or do you know any > companies who perform this migration? You can reply off-list if you prefer. > > Thanks so much, > Cheryl > cheryl at watsonwalker.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ________________________________ Warning: All e-mail sent to this address will be received by the corporate e-mail system, and is subject to archival and review by someone other than the recipient. This e-mail may contain proprietary information and is intended only for the use of the intended recipient(s). If the reader of this message is not the intended recipient(s), you are notified that you have received this message in error and that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately. ________________________________ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
