Not sure, I don't have good visibility into the application (Tririga Facility Center 8i). But if the application is rolling back, shouldn't I see 'user rollbacks' being incremented at least as much as 'transaction rollbacks'?
-- --Original Message-- -- From: Lou Fangxin [mailto:anysql@(protected)] Sent: Thursday, September 08, 2005 4:15 PM To: Allen, Brandon Cc: oracle-l@(protected) Subject: Re: High "transaction rollbacks" value in v$sysstat
Check you application, is there so much rollback in you application, or rollback to save point?
On 9/9/05, Allen, Brandon < Brandon.Allen@(protected)> wrote:
I just noticed in a 9.2.0.6 instance on Win2K3 that statspack is reporting a lot of rollback in the "transaction rollbacks" statistic, but a much more reasonable (smaller) value for "user rollbacks":
Statistic Total per Second per Trans -- ---- ---- ---- ---- ---- ----- -- ---- ---- ----- -- ---- ------ -- ---- ---- transaction rollbacks 3,640,974 31.6 1.3 user calls 135,007,494 1,172.0 47.4 user commits 2,845,562 24.7 1.0 user rollbacks 21 0.0 0 .0
I searched Metalink for bugs but didn't find anything. Is it even possible for these values to be correct? My understanding is that 'transaction rollbacks' is a subset of 'user rollbacks', i.e. URs is incremented everytime a user issues 'rollback' even if there is nothing to actually be rolled back, but TRs is only incremented when actual rollback work is performed. Is my understanding incorrect/incomplete? If so, what could be the cause of all this rollback activity?
Thanks, Brandon
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<META content="MSHTML 6.00.2800.1515" name=GENERATOR></HEAD> <BODY> <DIV><SPAN class=526131723-08092005><FONT face=Arial color=#0000ff size=2>Not sure, I don't have good visibility into the application (Tririga Facility Center 8i). But if the application is rolling back, shouldn't I see 'user rollbacks' being incremented at least as much as 'transaction rollbacks'?</FONT></SPAN></DIV> <BLOCKQUOTE> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma size=2>-- --Original Message-- --<BR><B>From:</B> Lou Fangxin [mailto:anysql@(protected)]<BR><B>Sent:</B> Thursday, September 08, 2005 4:15 PM<BR><B>To:</B> Allen, Brandon<BR><B>Cc:</B> oracle-l@(protected)<BR><B>Subject:</B> Re: High "transaction rollbacks" value in v$sysstat<BR><BR></FONT></DIV> <DIV>Check you application, is there so much rollback in you application, or rollback to save point?</DIV> <DIV> </DIV> <DIV><BR><SPAN class=gmail_quote>On 9/9/05, <B class=gmail_sendername>Allen, Brandon</B> <<A href="mailto:Brandon.Allen@(protected)">Brandon.Allen@(protected)</A>> wrote:</SPAN></DIV> <DIV> <BLOCKQUOTE class=gmail_quote style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">I just noticed in a <A href="http://9.2.0.6">9.2.0.6</A> instance on Win2K3 that statspack is reporting a lot of rollback in the "transaction rollbacks " statistic, but a much more reasonable (smaller) value for "user rollbacks": <BR><BR>Statistic Total per Second per Trans<BR>-- ---- ---- ---- ---- ---- ----- -- ---- ---- ----- -- ---- ----- - -- ---- ----<BR>transaction rollbacks 3,640,974  ; 31.6 1.3<BR>user calls 135,007,494 1,172.0 47.4<BR>user commits 2,845,562 24.7 1.0<BR>user rollbacks 21 0.0 0.0<BR><BR>I searched Metalink for bugs but didn't find anything. Is it even possible for these values to be correct? My understanding is that 'transaction rollbacks' is a subset of 'user rollbacks', i.e. URs is incremented everytime a user issues 'rollback' even if there is nothing to actually be rolled back, but TRs is only incremented when actual rollback work is performed. Is my understanding incorrect/incomplete? If so, what could be the cause of all this rollback activity? <BR><BR>Thanks,<BR>Brandon<BR><BR>Privileged /Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. <BR><BR>--<BR><A href="http://www.freelists.org/webpage/oracle-l">http://www.freelists.org /webpage/oracle-l</A><BR></BLOCKQUOTE></DIV><BR><BR clear=all><BR>-- <BR>Welcome, <A href="http://www.anysql.net/en/">http://www.anysql.net/en/ </A></BLOCKQUOTE></BODY><!--[object_id=#oneneck.com#]--><FONT face=Tahoma size =2><FONT color=#0000ff> <P>Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.</P>< /FONT></FONT></HTML>
