--- On Wed, 7/29/09, Roach, Dennis (N-GHG) <[email protected]> wrote:
From: Roach, Dennis (N-GHG) <[email protected]> Subject: Re: Print disk map? To: [email protected] Date: Wednesday, July 29, 2009, 1:17 PM IEHSLEDGEHAMMER also works well. Several years ago we had an application that allocated a file, with all of the DCB info, but did not open it. It was on real 3390 type DASD. It just so happened that the tracks allocated contained data compatible with the LRECL/BLKSIZE. Those tracks were readable by anyone with access to the file, including ISPF browse and edit. Dennis Roach Dennis: We had a similar issue and it took me some time before I figured it out.quite a few files that were processed all the time had the same DCB characteristics. A file was allocated but never opened so it had what had been there on the disk before. The data was then used as input to another program and gotcha the program blew up because of bad data. Now supposedly there is available (quite some time ago in fact) an option in DFSMS to write EOF markers in all unopened data sets. IIRC it is obscure and easily over look-able but it is in PARMLB. This solved a lot of issues that were (as we found out) hitting us more often than we knew about. Ed ---------------------------------------------------------------------- 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
