IMNSHO, extended format should be the *DEFAULT* for all VSAM datasets. I would like to hear reasons as to why not.
<Shields Up> Bob Richards -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Farley, Peter x23353 Sent: Wednesday, May 09, 2007 10:50 AM To: [email protected] Subject: Re: Measuring Use of BLSR Buffers Thanks for the pointer, Ed, but I can't use SMB because I am not dealing with Extended datasets. As noted in the info you quoted below, the requirements to use SMB include a requirement to use SMS storage and Extended format. I am using SMS storage but not Extended format here. At the moment Extended format requires a special request to the storage admins, and so is rarely used. Peter -----Original Message----- From: Ed Finnell [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 09, 2007 9:25 AM To: [email protected] Subject: Re: Measuring Use of BLSR Buffers <Snipped> Since DFP 1.4, IBM recommends SMB vs BLSR. Might start small and see if it can work in this situation. Certainly gives you better numbers to wave around. Some restrictions: 2.5.4.2 Tuning for System-Managed Buffering <Snipped> For system-managed buffering (SMB), the data set must use both of the following options: * System Management Subsystem (SMS) storage * Extended format (DSNTYPE=ext in the data class) LEGAL DISCLAIMER The information transmitted is intended solely for the individual or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you have received this email in error please contact the sender and delete the material from any computer. SunTrust and Seeing beyond money are federally registered service marks of SunTrust Banks, Inc. [ST:XCL] ---------------------------------------------------------------------- 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
