hi John, The Health checker points these parms as a performance affecting parms. Also IGGHC104E in MVS System Messages Vol 9 for z/OS .13 Says The IMBED and REPLICATE attributes were intended as performance improvements but have proven to be otherwise. They have proven towaste DASD space and degrade performance. They have been obsoleted by the newer, cached DASD devices. In some cases, unplanned outages have occured. No supported release of z/OS allows you to define a user catalog or master catalog with either the IMBED or REPLICATE attributes. IBM intends to drop support for these attributes in the future. in our shop we have many catalogs (defined a long time back) has these parms coded and Health checker warns about this.
Are you suggesting this parms has no performance implication? as documented in IGGHC104E message ________________________________ Thanks and Regards Shameem K Shoukath >________________________________ > From: John Eells <[email protected]> >To: [email protected] >Sent: Wednesday, July 17, 2013 6:01 PM >Subject: Re: Old usercatalogs with IMBED and REPLICATE > > >Richard Marchant wrote: >> Before you install Z/OS 1.13 do you need to remove the IMBED and REPLICATE >> parameters from your old Usercatalogs or will they co-exist with Z/OS 1.13? >> We are currently running Z/OS 1.11 and a number of the Usercatalogs have >> the IMBED parameter with no obvious ill affect. > >As others have said, "No." You need not do anything. There are no >current plans for removing this support, either. > >Also, I am reliably told that there is no significant performance or >space advantage to be had that justifies making a catalog unavailable >solely for the purpose of removing these attributes. > >-- >John Eells >z/OS Technical Marketing >IBM Poughkeepsie >[email protected] > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to [email protected] with the message: INFO IBM-MAIN > > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
