I'd be careful. Back around our migration to OS390 2.5, I remember some long nights and days restoring catalogs after they were touched by the new level system. If I remember right, we didn't get all the toleration ptfs on. I haven't made that mistake since.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Mark Zelden Sent: Monday, April 30, 2007 12:24 PM To: [email protected] Subject: Re: OS/390 Catalog in z/OS V1R7 On Mon, 30 Apr 2007 14:05:12 -0500, McKown, John <[EMAIL PROTECTED]> wrote: >> >> Does anyone on the list know if I can create a new catalog >> under OS390 2.4 >> and use that new catalog in z/OS V1R7 or V1R8 with no >> problem. I know I >> won't be able to use a V1R7 catalog on the old OS390 but what >> about the >> other way?? >> >> I need to upgrade a client's system > >Sure. Just don't use the IMBED or REPLICATE attribute when you do the >create. That won't keep it from working (yet). But it is good advise not to create it that way. >I have catalogs around here which were originally created on MVS >4.3! That is my HSM catalog. I am running z/OS 1.6. > AFAIK it should work. However, in your example, the fact that it was created under ESA 4.3 and is still in use under a current OS level doesn't really mean anything. There has been code in the past that changed the catalog/catindex once it was opened under the higher level. When this was the case (and ESA V4 dot something may have been one of those versions that changed it) there were toleration PTFs to allow the lower level system to share the catalog. If you were sill running a very old system and created a catalog that would then get touched by z/OS 1.8, there is a chance that any code that changed the catalog / catindex may not still be there. Mark -- ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
