RE: High "transaction rollbacks" value in v$sysstat

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@xxxxxxxxx]
Sent: Thursday, September 08, 2005 4:15 PM
To: Allen, Brandon
Cc: oracle-l@xxxxxxxxxxxxx
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@xxxxxxxxxxx> 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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