RE: Tuning Question and Advice needed ..

Bunyamin - I went to http://www.google.com <http://www.google.com> and searched for "utlbstat" and received 1,050 results. I would recommend that you try the same and read up on the resources available over the Internet. I would also recommend the book Oracle Performance Tuning 101 by Gaja Krishna Vaidyanatha
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
Sent: Friday, April 26, 2002 2:19 PM
To: Multiple recipients of list ORACLE-L

Dear Gurus , I need your help ..  

I run UTLBSTAT and then after 2 hour run the UTLESTAT.sql scripts as internal and look at the report.txt generated ...  

On report.txt , I see that  

System wide wait events for background processes: System wide wait events for non-background processes : Latch statistics
Statistics on no_wait gets of latches
Sum IO operations over tablespaces  

and other things also is in the report.  

Question 1)
What I wonder is
Are these values between the start and end times of scripts. What I mean is , for example Is the wait events for non-background processes list in report are the wait events occured between UTLBSTAT script run time T1 and UTLESTAT script run time T2 ? or are they total wait events from the startup of database ?  

Question 2)
I see lots of wait events occur ..
What will I give importance to ?
will I try to make 0 wait event in report. What are the optimums of wait events. ?
For example I see  

"Latch free event" occured for 3015 times ,
"control file sequential read" occured for 182 times ,
"log file sync" occured for 1756 times
"direct path read" occured for 11000 times
"direct path write" occured for 6000 times
 

Are these values normal ? Will I try to make them 0 in the tomarrows report ?  

How can I comment on the report ? Is there a link you can tell me to understand the problems and will help me to read and action about the problems ?  

Thank you...                  

Bunyamin K. Karadeniz
Oracle DBA / Developer
Civilian IT Department
Havelsan A.S. Eskisehir yolu
7.km Ankara Turkey
Phone: +90 312 2873565 / 1217
Mobile : +90 535 3357729

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Author: DENNIS WILLIAMS
  INET: DWILLIAMS_at_LIFETOUCH.COM

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