Home » RDBMS Server » Performance Tuning » The query too slow
The query too slow [message #65423] Sat, 18 September 2004 03:55 Go to next message
Mazen Eid
Messages: 4
Registered: September 2004
Junior Member
Hi there
I have query take too mush time to execute
My OS : Winods XP Professinal
Product : Oracle 9i database

I check the Oracle Performance manager I found the SGA Ratio is 100%
& there is more than 70% free memory in the Shared Pool

I checked the Wait event to see the top event & I found DB File Sequential Read Is very high

Please how can I reduce the DB File Sequential Read
Because I think this is the problem or how can i make my guery faster ??

Please help
Thanks
Mazen Eid
Re: The query too slow [message #65424 is a reply to message #65423] Sat, 18 September 2004 06:56 Go to previous messageGo to next message
Frank
Messages: 7901
Registered: March 2000
Senior Member
Hi,

Did you first tune your statement to choose the optimal path before checking your configuration ?
Most of the time, about 95% of the performance gains are in tuning faulty queries instead of tuning the database...

hth

Frank
Re: The query too slow [message #65427 is a reply to message #65424] Sat, 18 September 2004 21:57 Go to previous messageGo to next message
Mazen Eid
Messages: 4
Registered: September 2004
Junior Member
hi Frank

i don't know how to check the optimal path ?
& can i do it without change the code in the application because i can't change the code ?
thanks 4 ur reply

Mazen
Re: The query too slow [message #65428 is a reply to message #65427] Sun, 19 September 2004 07:25 Go to previous message
Frank
Messages: 7901
Registered: March 2000
Senior Member
Oh dear, can't change code; this will become tough.
Search the docs for the use of statspack to see where the actual pain is.

best of luck...
Previous Topic: Rolling ports problem on WAN
Next Topic: Regarding Procedure Performance
Goto Forum:
  


Current Time: Fri Feb 23 17:08:02 CST 2024