The following message is a courtesy copy of an article that has been posted to bit.listserv.ibm-main,alt.folklore.computers as well.
[EMAIL PROTECTED] (Knutson, Sam) writes: > You should have the PTFs for z/OS APAR OA17114 installed if you are > using paged fixed buffers in DB2 V8. Not having it was one of the > causes of a z/OS outage here when a DB2 DBA accidently overcommitted > storage to DB2. aka application page fixed buffers ... allows applications to specify the "real addresses" in the channel program ... avoiding the dynamic channel program translation (creating a duplicate of the channel program passed by excp/svc0) and dynamic page fixing that otherwise has to occur on every i/o operations (however, it can eliminate pageable storage needed by the rest of system) recent post mentioning difference between EXCP and EXCPVR (vis-a-vis channel program translation) http://www.garlic.com/~lynn/2007q.html#8 GETMAIN/FREEMAIN and virtual storage backing up other recent posts discussing dynamic channel program translation (in the initial translation from MVT to OS/VS2 supporting virtual memory, there was extensive borrowing of technology from cp67 CCWTRANS, channel program translation) http://www.garlic.com/~lynn/2007e.html#19 Cycles per ASM instruction http://www.garlic.com/~lynn/2007e.html#27 IBM S/360 series operating systems history http://www.garlic.com/~lynn/2007e.html#46 FBA rant http://www.garlic.com/~lynn/2007f.html#0 FBA rant http://www.garlic.com/~lynn/2007f.html#6 IBM S/360 series operating systems history http://www.garlic.com/~lynn/2007f.html#33 Historical curiosity question http://www.garlic.com/~lynn/2007f.html#34 Historical curiosity question http://www.garlic.com/~lynn/2007k.html#26 user level TCP implementation http://www.garlic.com/~lynn/2007n.html#35 IBM obsoleting mainframe hardware http://www.garlic.com/~lynn/2007o.html#37 Each CPU usage http://www.garlic.com/~lynn/2007o.html#41 Virtual Storage implementation http://www.garlic.com/~lynn/2007p.html#69 GETMAIN/FREEMAIN and virtual storage backing up http://www.garlic.com/~lynn/2007p.html#70 GETMAIN/FREEMAIN and virtual storage backing up http://www.garlic.com/~lynn/2007p.html#72 A question for the Wheelers - Diagnose instruction http://www.garlic.com/~lynn/2007r.html#56 CSA 'above the bar' ---------------------------------------------------------------------- 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
