There have been some good discussions in the past which suggest that the DFP access methods don't use STARTIO directly. Those few dedicated vivisectionists of I/O working at ISVs and the IBM folks working in DFSMSdfp & z/OS IOS can talk about this with some authority but with OCO and withdrawal of PLM's there is precious little externalized documentation.
http://www.naspa.com/PDF/2003/0503/T0305009.pdf http://bama.ua.edu/cgi-bin/wa?A2=ind0507&L=ibm-main&P=R20338&I=1 http://bama.ua.edu/cgi-bin/wa?A2=ind9803&L=ibm-main&P=R66905&I=1 Best Regards, Sam Knutson, GEICO Performance and Availability Management mailto:[EMAIL PROTECTED] (office) 301.986.3574 The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the Marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day. Never lose a holy curiosity. - Albert Einstein -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Shmuel Metz (Seymour J.) Sent: Tuesday, April 11, 2006 7:49 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: A very basic question In <[EMAIL PROTECTED]>, on 04/11/2006 at 09:43 AM, "(IBM Mainframe Discussion List)" <[EMAIL PROTECTED]> said: >I also believe that VSAM uses EXCPVR, AFAIK it uses STARTIO, which has a shorter path length than EXCP or even EXCPVR. -- Shmuel (Seymour J.) Metz, SysProg and JOAT ==================== This email/fax message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient, please destroy all paper and electronic copies of the original message. ---------------------------------------------------------------------- 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
