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Home -> Community -> Mailing Lists -> Oracle-L -> RE: direct path read waits
Yes.. I did it multiple times... With same results though :-(
Babu
Henry Poras
<hporas_at_etal.uri. To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
edu> cc:
Sent by: Subject: RE: direct path read waits
root_at_fatcity.com
02/20/03 04:38 PM
Please respond to
ORACLE-L
Babu,
Did you run each scenario more than once to make sure it is not an anomaly?
Henry
-----Original Message-----
babu.nagarajan_at_Cummins.com
Sent: Thursday, February 20, 2003 2:41 PM
To: Multiple recipients of list ORACLE-L
All
We are doing some performance testing while moving from one server to another. I was trying to time some index rebuilds and noticed something that I cant explain.
I am rebuilding an index on a 1 million row table. Lets say its on tablespace A and when I rebuild it to tablespace B it does in 33 seconds. I put it back on A and then rebuild it on tablespace C it takes 1 min 40 seconds. The only change here is the target tablespace.
When I set 10046 level 12 and counted time waited (ela column)
>From A - B (33 seconds)
sum of elapsed in "DIRECT PATH READ" = 394 ( i think this is cs)
>From A - C (1 min 40 sec)
sum of elapsed in "DIRECT PATH READ" = 6251
The P1 of all of these waits point to the same file (#4 part of TEMP tablespace)
Why should the change in the target tablespace affect the time taken to read from the TEMP tablespace?
TIA Babu
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: INET: babu.nagarajan_at_Cummins.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (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.net -- Author: Henry Poras INET: hporas_at_etal.uri.edu Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (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). _____________ This e-mail transmission and any attachments to it are intended solely for the use of the individual or entity to whom it is addressed and may contain confidential and privileged information. If you are not the intended recipient, your use, forwarding, printing, storing, disseminating, distribution, or copying of this communication is prohibited. If you received this communication in error, please notify the sender immediately by replying to this message and delete it from your computer. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: INET: babu.nagarajan_at_Cummins.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (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).Received on Thu Feb 20 2003 - 16:45:50 CST
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