All good points. However, with batch LSR, a few simple JCL changes should do the trick. And, oddly enough, the defaults are almost always suitable.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Larry Crilley Sent: Monday, December 28, 2009 12:49 PM To: IBM-MAIN@bama.ua.edu Subject: Re: VSAM LSR The access method (VSAM) manages the buffer pool and buffer lookasides. You just issue the GET(s). You must build the LSR pool before the OPEN of each VSAM file. If the datasets have different data/index CISIZES, you will need to build the pool accordingly. Also, if these are KSDS (indexed) VSAM files, you should look into building separate data and index LSR pools. Ideally, for the index, you would want to build it large enough to hold the upper levels of the index component plus a few for sequence set records. -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of esst...@juno.com Sent: Monday, December 28, 2009 11:01 AM To: IBM-MAIN@bama.ua.edu Subject: VSAM LSR I have an application that has several VSAM datasets. These datasets currently use NSR (Non Shared Resources). The Application is written in assembler. I want to switch some of the Files to use LSR. If two files share a buffer pool do I need to concern my self with the contents of the buffer pool or is the Access Method handling that. In other words If I issue a VSAM GET for File A, is VSAM managing the contents of the LSR buffer pool with respect to the two files that may or may nor have records in the buffer pool ? Do I need to use any additional Assembler VSAM macros to manage the contents of the buffer pool ? Paul D'Angelo ____________________________________________________________ Weight Loss Program Best Weight Loss Program - Click Here! http://thirdpartyoffers.juno.com/TGL2141/c?cp=vnAEybPZGp-e7KXPyxS0vQAAJ1DMCv I8C_EKS4yGKHO7DleMAAYAAAAAAAAAAAAAAAAAAADNAAAAAAAAAAAAAAAAAAAEUgAAAAA= ---------------------------------------------------------------------- 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 NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- 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
