> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Shmuel Metz (Seymour J.) > Sent: Thursday, July 06, 2006 6:39 PM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: avgrec/avgblk history ? > > > In <[EMAIL PROTECTED]>, on 07/06/2006 > at 01:39 PM, Paul Gilmartin <[EMAIL PROTECTED]> said: > > >This is the first I have heard of unreliability of DISP=MOD. Is that > >the consensus of readers here? > > I used it freely. > > -- > Shmuel (Seymour J.) Metz, SysProg and JOAT
I never use it. My reason is that when I update a file with DISP=MOD, there is no way to __easily__ restart an abended step. In this case, to restart, the program would need to have restart capability built into it so that it would not process any already processed data. This could be quite complicated. To me, it is much easier to just have a lot of GDGs and write to the next generation. Upon restart, just scratch the "bad" generation (CA-11) and go. If DISP=MOD is absolutely necessary, then I guess an IEBGENER at the end to copy the GDG to the real dataset might be OK. But what if the output dataset gets an SB37 due to a space problem? How do I "unwind" the added records? Of course, each cat his own rat. -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology This message (including any attachments) contains confidential information intended for a specific individual and purpose, and its content is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this transmission, or taking any action based on it, is strictly prohibited. ---------------------------------------------------------------------- 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
