At our shop we have three master catalogs in the same sysplex. We run three "levels" of lpars and the master catalogs are by level. Our three tech lpars share a master catalog. Our three application test lpars share a different master catalog. Our 6 production lpars share a different master catalog. So yes you can have more than one master catalog, it just depends on how things are laid out.
We run with shared DASD across all the lpars. So depending on what we are doing we have to remember to update all three master catalogs or just update one master catalog. You have to be careful about any VSAM dataset that might be in your master catalog(s). You don't want a VSAM dataset in two master catalogs. We have the master catalogs on their own (different) volumes. You don't want more than one master catalog on a volume. Thanks.. Paul Feller AGT Mainframe Technical Support -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Travis Sent: Monday, November 21, 2016 14:54 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Catalogs in a SYSPLEX We are creating a SYSPLEX of two systems and there seems to be some debate about using a single shared master catalog or multiple master catalogs on each system. The IBM manuals recommend a single shared master catalog but our CE has been advocating multiple catalogs. What are the pros and cons of running each? We have two identical systems in the PLEX and for right now there is no plan to add more, however that could change at any time in the near future. ---------------------------------------------------------------------- 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
