Robin, I think there may need to be some more understanding of the application.
The LBACKUP - last backup date could be altered by a backup function such as DFSMShsm HBACKDS (BACKDS) command, maybe a MIG command, and lastly ABARS. It might also be reset by a DFDSS Dump and other similar products. It might also depend on if the VSAM data set was DFSMS managed or not. CICS has an option called BWO (Backup While Open) which also might impact your answer. If the VSAM dataset is RLS then it could change this answer as well. If you could provide some additional details on how the file is used and whether or not it is SMS or NON SMS managed, that might be helpful to this discussion. Otherwise, you may need to use the exit if you really want to be sure. The information in the VSAM arena is not always clear cut. You may have to find a "best" fit type answer. But these fields are not always going to be, from my understanding, accurate. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Lizette Koehler > Sent: Monday, November 25, 2013 6:26 AM > To: [email protected] > Subject: Re: Getting a VSAM data set's system timestamp > > I do not think that will be much better. > > For example. If I am using HSM in my shop and do an HBACKDS command, it will > change the Last Backup Date even though the data in the file was not altered. This > may also be true for DFDSS dumps and possibly other "backup" > functions > > You may also have challenges if the VSAM files is handled under RLS (Record > Level Sharing). > > > > Lizette > > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:[email protected]] > > On Behalf Of Robin Atwood > > Sent: Monday, November 25, 2013 1:48 AM > > To: [email protected] > > Subject: Re: Getting a VSAM data set's system timestamp > > > > Thanks to everyone who replied. The server is a part of a product and > > so > installation > > must have a minimal impact on a customer's system. I am currently > > going > with > > using the last backup date as an indicator that the data set has been > written and a > > sync is required. > > > > Thanks > > Robin > > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
