Hi Ravi, With regard to the use of DISP=MOD and partitioned data sets.
In my experience, and I can only speak from that perspective, I believe the recommendation in the manual is incorrect. It also seems to conflict with the DFSMS Utilities manual, where PARM=MOD is used on IEBUPDTE to indicate ADD or REPLACE activity on a PDS, with both SYSUT1 and SYSUT2 having DISP of OLD/SHR as appropriate. The general consensus is that DISP=OLD will ensure that GRS will honour data set name ENQs, and whilst DISP=MOD also gives exclusive control there may be other implications. I have never used DISP=MOD with PDSs, which doesn't make it right, but not using it has not caused a problem. The option of splitting the current process such that each DD statement forms the basis for an independent step is certainly a solution to the overlap problem. Amending the program to perform a loop in which it; a) Opens the PDS b) Writes a member c) Closes the PDS Is another solution. I have not explored any potential benefit with switching to using PDSE rather than PDS. I hope this helps. Kind Regards - Terry Director KMS-IT Limited 228 Abbeydale Road South Dore Sheffield S17 3LA UK Reg : 3767263 Outgoing e-mails have been scanned, but it is the recipients responsibility to ensure their anti-virus software is up to date. ---------------------------------------------------------------------- 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
