> -----Original Message----- > From: Ed Finnell [mailto:[EMAIL PROTECTED] > Sent: Wednesday, August 08, 2007 11:59 AM > To: [email protected] > Subject: Re: VSAM REUSE with alternate index > > Well what I tried was Delete the CLUSTER(all AIX's go away). Reload with > BLSR then rebuild the AIX's. Dropped the run time from 28 Minutes to 14 > SECs on RVA. Held steady thru hardware and software upgrades.
OK, I misunderstood the context of your answer. It makes sense now. A very good use for BLSR. FWIW, I have recently had opportunity to try SMB (System Managed Buffering, AMP=ACCBIAS=DO/SO/SYSTEM) and found it worked quite as well or even a little better than BLSR for random access. Others in my organization have tested the sequential optimization (ACCBIAS=SO) with somewhat less spectacular results, but improvements nonetheless. These tests were all done with a default REGION of 64M and no REGION overrides. The one gotcha is that the files MUST be in an EXTENDED DATACLAS. Most annoying restriction, IMHO, especially when such classes are restricted access as they are here. Peter This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- 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
