On Wed, 30 Jun 2010 16:33:11 -0500, Pommier, Rex R. wrote: >Hmmm, read the source, read the backup and compare them, just so I can >reread the source and write the backup. Yeah, sign me up!!! > How about writing the backup unconditionally, generating a strong checksum on-the-fly (ICSF CSNBOWH does this pretty efficiently). Compare to previous iteration. If identical, discard the previous iteration?
>-----Original Message----- >From: IBM Mainframe Discussion List [mailto:[email protected]] On >Behalf Of Ken Porowski >Sent: Wednesday, June 30, 2010 4:26 PM > >Of course, don't you compare every dataset you have to the most recent >backup to see if the data has changed? >I wouldn't trust the dataset changed bit if I were you. > The crux of the argument. I suppose there are ways of writing or overwriting a data set without setting the changed bit, or of resetting it afterwards without taking a backup. I suppose that anyone who does this deserves or intends to have his data not backed up. -- gil ---------------------------------------------------------------------- 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
