Extended SQL Trace Interpretation Question
- From: mkb <mkb125@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Wed, 28 Oct 2009 13:32:41 -0700 (PDT)
I traced a very simple SQL statement (10046 level 12). Something like:
select id from issues
which returned 195 rows.
Here's a snippet from my trace file and on the PARSE line I get the following:
PARSING IN CURSOR #5 len=40 dep=0 uid=49 oct=3 lid=49 tim=1227288824370256
hv=1876028296 ad='777f6f40'
select id from issues
END OF STMT
PARSE #5:c=11998,e=11427,p=0,cr=0,cu=0,mis=1,r=0,dep=0,og=1,tim=1227288824370250
BINDS #5:
EXEC #5:c=0,e=82,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=1,tim=1227288824370419
My understanding was that the e ~ c + SUM ela (Optimizing Oracle Performance,
Ch 5 p87, Millsap). So why is my e value less than my c value? Should it not
be greater than or equal to my c value?
Database is 64-bit 10gR2 EE on RHAS 4u7.
Thanks
--
mohammed
--
//www.freelists.org/webpage/oracle-l
Other related posts:
