Well even Oracle learns it after a couple of years. Have a look at my YAPP method and it will become (hopefully clear). Basically the Oracle kernel is using CPU or it is waiting on something. That is now shown in the Top 5 events. So in your case, have a look at your SQL.
Anjo. (I can add more and more here, but I am a lazy typist ;-) ) On Tuesday 27 August 2002 14:48, you wrote: > hi, dba friends: > I am analyzing my new added rac database running rac 9.2 on linux > cluster.I did a statspack report and surprised to find the following data: > > Top 5 Timed Events > ~~~~~~~~~~~~~~~~~~ % > Total Event Waits Time (s) > Ela Time -------------------------------------------- ------------ > ----------- -------- CPU time > 50,805 98.19 SQL*Net message from dblink > 736 310 .60 latch free > 7,676 259 .50 global cache s to x > 19,320 118 .23 log file sync > 8,850 46 .09 The top wait event is cpu time, but in > fact, even during the most busy time, there is still cpu idle.So, what does > the cpu time mean? Can someone help me understand it? > Thanks. > > Regards > zhu chao > Eachnet DBA > 86-21-32174588-667 > [EMAIL PROTECTED] -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Anjo Kolk 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).
