Apologies for the double listing to anyone who's also seen this on the JES3-L LISTSERV.
The government agency that employs me has three z/OS LPARs (V2R5) running on a z15 server. The lone mainframe storage subsystem is a non-replicated, channel-attached DS8886. This has never been a JES2 installation and Phoenix Software’s JES3plus is now installed. While the JES3 initialization deck has DEVICE statements for all tape drives, it has not contained a DEVICE statement for a DASD address in over a decade. In other words, DASD allocation is not managed by JES3. The DS8886 will soon be replaced by a DS8950F. TDMF software will be used to migrate the contents of the DS8886 to the DS8950F. I believe that TDMF can move the JES3 SPOOL volumes, the SYSRES volumes, the page packs and the DASD volumes where the coupling facility resides without issues. A co-worker insists that all of the LPARs must be brought down, separately, so that each LPAR’s ‘sensitive’ volumes can be moved from another LPAR. IBM documents state: ‘JES3 considerations: In order to ensure that JES3 system defined volumes will migrate (not required for a Point-In-Time migration) in a TDMF (or P/DAS) environment, APARs OW23271, OW28455, and OW28457 must be applied. These APARs provides JES3 DDR support for P/DAS and therefore, will allow the swapping of volumes. Important: All systems sharing devices where JES3 manages the devices must be involved in the TDMF session running. This ensures that all JES3 internal tables are properly updated. Failure to do so will cause unpredictable results. It is recommended that the user check the UCB for the following bit prior to copying volumes in a JES3 environment: UCBJ3DV - device is defined to JES3. If the bit is off, TDMF will migrate the volume(s) with no errors. If the bit is on, TDMF will make the appropriate calls to JES3 to notify JES3 of the volume redirection needed.’ Since the DASD volumes at this installation are not managed by JES3, I don’t think these APARs are an issue. However, to assuage my co-worker’s fears, I’d like to see whether the corresponding PTFs have been applied. Unfortunately, I cannot find the PTFs that correspond to any of them. Question: What PTFs correspond to APARs OW23271, OW28455, and OW28457? Also, I’m not sure how to display the UCBs involved to verify that the UCBJ3DV flag indicates that the volumes are not managed by JES3. Any help you can provide on would be appreciated, particularly on how to use either UCBSCAN or UCBLOOK macros. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
