David, I believe that you can accomplish this most efficiently with a DF/Sort MERGE. I am 98% positive that it accepts VSAM input and output and you won't have to do a reorg because the resulting merged KSDS will already be sorted.
Cheers, Alan -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of David G. Schlecht Sent: Tuesday, May 31, 2011 8:18 AM To: IBM-MAIN@bama.ua.edu Subject: HSM - Merging a multi-cluster CDS Hello, All, Our HSM BCDS is over 2.7GB and due to shortages of Mod-9 DASD, we converted our BCDS to a multi-cluster VSAM dataset, following recommendations in the Implementation and Customization guide. Now that we have some Mod-9s, I want to combine the multi-cluster back into a single VSAM BCDS. Still looking at the Customization and Implementation guide, (Chapter 3), I see under Changing the Number of Clusters, you can use the same method to reduce the number of clusters. However, the syntax provided leaves questions. According to the book, the following syntax will split a CDS as we have done but I can’t see how this will combine them back into one. Here is the syntax from the book: //STEP2 EXEC PGM=IDCAMS,REGION=512K //SYSPRINT DD SYSOUT=A //SYSUDUMP DD SYSOUT=A //SYSIN DD * REPRO INDATASET(DFHSM.BCDS) OUTDATASET(DFHSM.BCDS1) - FROMKEY(X’00’) TOKEY(MIDDLE.KEY1) REPRO INDATASET(DFHSM.BCDS) OUTDATASET(DFHSM.BCDS2) - FROMKEY(MIDDLE.KEY2) TOKEY(X’FF’) I see no syntax for providing multiple INDATASET names for the same OUTDATASET and question whether you can specify multiple REPRO commands for the same OUTDATASET name. Does anyone know the method for recombining a multi-cluster BCDS? -David David G. Schlecht | Information Technology Professional | DoIT Facility State of Nevada | Department of Information Technology T:(775)684-4328 | F: (775) 684‐4324 | E:dschle...@doit.nv.gov This communication, including any attachments, may contain confidential information and is intended only for the individual or entity to which it is addressed. Any review, dissemination or copying of this communication by anyone other than the intended recipient is strictly prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and delete all copies of the original message. ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
