On Wed, 9 Jun 2010 15:11:47 -0500, Ruegsegger, Jeff <jeff.ruegseg...@avnet.com> wrote:
>We were forced into the logical dump mode as >the physical dumps were causing elongated RESERVE's (converted to global >ENQUEUES by CA-MIM) and would spend hours thrashing due to the synchronous >batch that runs. I've always used this sample exit, which pretty much makes DFDSS operate the way FDR full volume dumps work by default. *THIS EXIT PREVENTS DFSMSDSS FROM ENQUEUING THE VTOC *BY NOT ENQUEUING THE VTOC PERFORMANCE WILL BE INCREASED... BUT * THERE WILL BE DECREASED DATA INTEGRITY. * * SETTING THE EXIT RETURN CODE TO 4 * CAUSES DFSMSDSS TO ENQUEUE ONLY ON THE VOLUME BEING * DUMPED/COPIED AND ONLY FOR THE DURATION OF THE VTOC ACCESS * ADRUENQ CSECT ADRUENQ AMODE 31 ADRUENQ RMODE 24 STM 14,12,12(13) SAVE REGS IN PREVIOUS SAVEAREA USING ADRUENQ,15 SET ADDRESSABILITY TO THE EXIT LM 14,12,12(13) RESTORE OTHER REGISTERS LA 15,4 SET RETURN CODE TO 4 BR 14 RETURN END -- Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS mailto:mzel...@flash.net Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html Systems Programming expert at http://expertanswercenter.techtarget.com/ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html