Bob, most of out applications are inquiry, so we stop the channels and stop the inflow. Those queues get emptied, quickly, so no need to recover that data. For the new queues that contain persistent data that feed batch processes, we use the csqutil utility to copy the queue, and page dataset (0). We also save all the queue defintions. If a problem occurs in upgrade, or back out is required then we can LOAD the messages back in.
one area we have not tested, is to copy from higher (5.3), and load on lower (5.2). We had some problems when we tested on 1.2 to 2.1. but Last upgrade we had a long test cycle, and presumed that we would live with any problems. glen "Ofeldt, Robert" <[EMAIL PROTECTED]>@AKH-Wien.AC.AT> on 02/25/2003 07:53:53 AM Please respond to MQSeries List <[EMAIL PROTECTED]> Sent by: MQSeries List <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc: Subject: Re: MQ V5.2 & 5.3 Compatibility on Mainframe Hi Glen, thanks for getting back to me. I am currently planning to upgrade to V5.3 from V5.2 shortly. Have you thought about a fallback plan just incase? Our mgmt requires a fallback plan. I need to document what would need to be reversed and backed out if for some unknown reason I had to back off V5.2. Does the installation guide for 5.3 explain backoff? I haven't ordered 5.3 yet because we plan to upgrade to V5.3.1 which is not GA yet. Thanks Bob Ofeldt 201-269-4076 MedcoHealth Messaging Infrastructure -----Original Message----- From: Glen Larson [mailto:[EMAIL PROTECTED] Sent: Friday, February 14, 2003 10:35 AM To: [EMAIL PROTECTED] Subject: Re: MQ V5.2 & 5.3 Compatibility on Mainframe Robert, IBM states that the 'EARLY' code is downward compatible, and having upgraded several releases in the past, I expect that it will work. Using 2.1 / 5.2 as an example. We were unable to use the 2.1 ISPF panels to view 5.2 queue managers, and the reverse. The utilites for old version continued to work as before, (provided the old version of the mq libs were used. There is a prereq fix that is required on 5.2 to allow it to Q-share with 5.3. I have not brought up a 5.3 system, but we are running COBOL programs compiled under 1.1.4 without problem, and IBM has stated that is is object level compatible, so I do not expect any problems. Again IBM Mainframe products have a good record of this since the early days of the s/360's. glen larson zurich north america "Ofeldt, Robert" <[EMAIL PROTECTED]>@AKH-Wien.AC.AT> on 02/14/2003 08:14:15 AM Please respond to MQSeries List <[EMAIL PROTECTED]> Sent by: MQSeries List <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc: Subject: Re: MQ V5.2 & 5.3 Compatibility on Mainframe Could someone please tell me if MQ V5.3 is downward compatible to V5.2 on the mainframe? If I apply early code for v5.3 will utilities and QMGRs using the old v5.2 libraries still run with no problems? Can v5.2 and v5.3 QMGRs in the same Q-sharing group coexist? Will cobol coded programs run OK without recompiling? Thank you Bob Ofeldt MedcoHealth Messaging Infrastructure ******************* PLEASE NOTE ******************* This E-Mail/telefax message and any documents accompanying this transmission may contain privileged and/or confidential information and is intended solely for the addressee(s) named above. If you are not the intended addressee/recipient, you are hereby notified that any use of, disclosure, copying, distribution, or reliance on the contents of this E-Mail/telefax information is strictly prohibited and may result in legal action against you. Please reply to the sender advising of the error in transmission and immediately delete/destroy the message and any accompanying documents. Thank you. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
