I still like to recommend the buffer cache hit ratio because its so easy to please customers with an improvement - A plsql routine to generate any desired hit ratio on a running system is freely available for download from my site... a consultants dream! :-)
But, serious hat on temporarily, there IS still a use for the buffer hit ratio as a "delta" measurement. What I mean by this is that you measure it every 'n' mins/hrs/whatever and store it. When it displays a massive dip or a massive increase (ie something out of the ordinary for *your* system), then whilst it doesn't necessarily mean anything is wrong - it DOES mean that something has changed in your system, which is a good prompt to do some investigation.. hth connor --- John Kanagaraj <[EMAIL PROTECTED]> wrote: > Mark, > > This is from a first-timer at IOUG, so I may be way > off here. > > A lot of marketing blurb was thrown out at IOUG > (probably a lot less than > usual, and *much* less than Oracle OpenWorld in any > case!). As for tools, > many vendors were flogging the same ones, improved > versions maybe. One which > did make us say 'wow' was StorageXpert from Quest. > IMHO, this is an > excellent tool, engineered by our very own Gaja. I > believe details are at > the Quest site at www.quest.com. If you have EMC > disks and are facing > performance problems, I believe there is the best > there is. (Or even if you > have other storage devices, it would still give you > the hotspots). > > And NO, I do NOT work for Quest, nor have Quest > stock! > > And for others, I believe this was a major turning > point and an eye-opener > as far as the Wait Interface goes (This has > (un)officially been renamed to > OWI as per Kirti's slides :-). Most attendees 'saw > the light' as far as CHR > (Cache Hit Ratio) goes, and there were two distinct > camps after the first > few days - the 'CHR' and 'OWI'. No prizes for > guessing who won the day! The > massive number of defections and the absolute > absense of > CHR-based-discussions at the Performance round > tables was clear evidence > that OWI is here to stay! (Mr. R might still rewrite > that book sooner than > later!) > > About 20 Listers met for dinner on Sunday night (and > again in a larger group > at the SeaWorld bash). The meeting was characterized > by geek-talk such as > 'Can you fit us all in one extent?' i.e. 'can we all > sit at one table?'), > 'Please coalesce' - 'please move in so that more > people can fit into the > aisle seats'. > > Oh Boy, that WAS a lot of fun! > > John Kanagaraj > Oracle Applications DBA > DBSoft Inc > (W): 408-970-7002 > > Grace - Getting something we don't deserve > Mercy - NOT getting something we deserve > > Click on 'http://www.needhim.org' for Grace and > Mercy that is freely > available! > > ** The opinions and statements above are entirely my > own and not those of my > employer or clients ** > > > > -----Original Message----- > > From: Mark Leith [mailto:[EMAIL PROTECTED]] > > Sent: Monday, April 22, 2002 4:58 AM > > To: Multiple recipients of list ORACLE-L > > Subject: Anything new from IOUG? > > > > > > Hi All that recently attended IOUG. > > > > If you don't already know - I sell "tools" for > Oracle. > > (delete this now if > > you want to DG! ;P) > > > > I was just wondering if anybody at IOUG had any > feedback on > > any "new" tools > > that were launched, or any tools that made a > significant > > impact at IOUG? > > > > This is purely for "vendor awareness" for myself, > as I like > > to keep up to > > date on anything new in and around our particular > market > > place.. If anybody > > saw something and thought "wow!", I'd be > interested in > > hearing about it. If > > you would like to contact me directly about this - > please > > feel free, though > > I feel the list *could* also benefit from this.. > > > > Cheers > > > > Mark > > > > > =================================================== > > Mark Leith | T: +44 (0)1905 330 281 > > Sales & Marketing | F: +44 (0)870 127 5283 > > Cool Tools UK Ltd | E: [EMAIL PROTECTED] > > > =================================================== > > http://www.cool-tools.co.uk > > Maximising throughput & performance > > > > > > -- > > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > > -- > > Author: Mark Leith > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- (858) 538-5051 > FAX: (858) 538-5051 > > San Diego, California -- Public Internet > access / Mailing Lists > > > -------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an > E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of > 'ListGuru') and in > > the message BODY, include a line containing: UNSUB > ORACLE-L > > (or the name of mailing list you want to be > removed from). You may > > also send the HELP command for other information > (like subscribing). > > > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: John Kanagaraj > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: > (858) 538-5051 > San Diego, California -- Public Internet > access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an > E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of > 'ListGuru') and in > the message BODY, include a line containing: UNSUB > ORACLE-L > (or the name of mailing list you want to be removed > from). You may > also send the HELP command for other information > (like subscribing). ===== Connor McDonald http://www.oracledba.co.uk (mirrored at http://www.oradba.freeserve.co.uk) "Some days you're the pigeon, some days you're the statue" __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?Connor=20McDonald?= INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
