I will do that. Thanks for the advice. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Ted MacNEIL Sent: Thursday, March 12, 2009 4:34 PM To: [email protected] Subject: Re: VSAM files
>Thanks for the tip(s). I forgot to mention that there is an IBM RedBook "VSAM De-Mystified" that goes into some, if not all, of what Tom mentioned. And, as I said, rather than identifying VSAM as a problem, determine what are your problem jobs/transactions/programmes and 'fix' those. I remember once, years ago, my ex-wife was tasked with fixing a programme that had a programming 'problem' -- it was too slow. She looked at it and found that it used three tape files: Input master. Transaction. Output master -- to be used next run. It was a standard COBOL application -- the first thing you're taught in first year programming at University. She found that the LRECL and the BLKSIZE were the same (132). And, the master files were multi-reel. So, she put in a request for JCL changes. The job went from 4 hours+ to less than 20 minutes. And, the master files went down to a single volume, each. She actually got paged, because the job finished so quickly. There are a lot of stories like that out there, and they are still happening, today. My point is, if you go in assuming something is a problem -- my ex: the programme -- you: VSAM, you potentially close the door on examining the real issues. Not to say that a VSAM file is NOT the problem, but, please, keep an open mind. Identifying the few problem tasks, can also reduce your workload. - Too busy driving to stop for gas! ---------------------------------------------------------------------- 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 ========================== This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to which they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. ---------------------------------------------------------------------- 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
