I'd like to mention some reminders, concerning IMBED, REPLICATE, and KEYRANGE and z/OS. (There's no new news here. We've been saying for a long time that VSAM data sets with these attributes have been involved in unplanned outages, and now there's a Red Alert on a problem in this area...)
a) Today, data sets that were migrated by DFSMShsm or backed up by DFSMSdss continue to retain their IMBED, REPLICATE, and KEYRANGE attributes when recalled or restored. In some future release, these IMBED and REPLICATE attributes will be removed during the recall or restore of data sets. (Note that today, these attributes will not be "cleaned up automatically"!...which means you need to take some action today to make this better or at least be aware of where your risks are.) b) To help you with identifying which VSAM data sets have IMBED, REPLICATE, or KEYRANGE, use the IMBDSHIP tool (for VSAM data sets, or catalogs), the "as is" IBM Migration Checker program OLDVSAM (for catalogs) prior to z/OS R11, or coming in z/OS R11 a new health check to verify catalogs don't have these attributes. Bottom line recommendation: find out how exposed you are to this problem, and redefine any VSAM data sets or catalog that have these attributes *now*. -Marna WALLE z/OS System Build and Install IBM Poughkeepsie ---------------------------------------------------------------------- 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
