| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
 |
 | |||
| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
|
| |||
Home -> Community -> Mailing Lists -> Oracle-L -> Re: Free Buffer Waits
Is this job using db links or involving in any distributed
databases/transaction....then any network isssue may keep it running
long/indefinately...It happens to us couple of time in the past...
Regards
Rafiq
Reply-To: ORACLE-L_at_fatcity.com
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
Date: Thu, 13 Jun 2002 01:03:32 -0800
Hi All,
We have a production database that has a batch job running on it for months
now. Last night one part of the batch job that normally takes between 20-30
minutes took well over 6 hours.
The only difference I can see between today & other days is that the Free
Buffer Wait event was the top wait event, which it not normally is (not
even top 10)
This database goes down every night for backup and this is the timings I got.
Total waits:22055
Total timeouts:22052
Time waited: 2225285 (is this ms or cs?)
Avg.wait:100.8971
This whole thing puzzles me a bit since nothing changed to the database and nothing was in the Alert log. Also system was virtually idle during the 6 hours (no activity according to UNIX boys)
I was sound asleep when this happened so I don't have much more than this info.
Can anybody explain why this could have happened or point me to some documents that can. Standard answer you'll find that your DBWR can't keep up, but I have 4 of them and the sytem was idle.
THX
Indien bovenstaand e-mailbericht niet aan u is gericht, verzoeken wij u vriendelijk doch dringend het e-mailbericht te retourneren aan de verzender en het origineel en eventuele kopieën te verwijderen en te vernietigen.
Ernst & Young hanteert bij de uitoefening van haar werkzaamheden algemene voorwaarden, waarin een beperking van aansprakelijkheid is opgenomen. De algemene voorwaarden worden u op verzoek kosteloos toegezonden.
If you are not the intended recipient of this communication please return the communication to the sender and delete and destroy all copies.
In carrying out its engagements, Ernst & Young applies general terms and conditions, which contain a clause that limits its liability. A copy of these terms and conditions is available on request free of charge.
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Jack van Zanen INET: nlzanen1_at_EY.NL 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: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-LReceived on Thu Jun 13 2002 - 11:08:28 CDT
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing). _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Mohammad Rafiq INET: rafiq9857_at_hotmail.com 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: 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).
 |
 |