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Re: tkprof output

From: AK <oramagic_at_hotmail.com>
Date: Wed, 12 Mar 2003 09:18:01 -0800
Message-ID: <F001.00567B9E.20030312091801@fatcity.com>


Thanks Jonathan for the information . Let me go through raw -trace file once more to get info . Everytime I go through it I find something interesting .

-ak

>
> The examples you have given are SYS-recursive,
>
> The call to cdef$ is Oracle looking for some information
> about constraints (one possibility is that you keep breaking
> a PK or UK constraint and Oracle has to keep looking up
> the name of the constraint because it doesn't cache constraint
> names).
>
> The call to seq$ usually appears because you are using
> a sequence with a very small, or no, CACHE set - so
> as you get the next value from the sequence, oracle has
> to bump the sequence high-water value and write it to
> disc.
>
> In general, the recursive depth simply tells you how
> far down the stack of calls your cursor is. For example
> (which may be wrong in detail, but right in gist) if you
> execute an anonymous pl/sql which runs an SQL statement
> that uses a sequence.nextval that happens to bump
> the sequence high-water, you would (probably see):
>
>
> anonymous pl/sql dep = 0
> SQL statement dep = 1
> update seq$ statement dep = 3
>
>
> Regards
>
> Jonathan Lewis
> http://www.jlcomp.demon.co.uk
>
> Now available One-day tutorials:
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>
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
> Sent: 12 March 2003 16:15
>
>
> > Thanks Jonathan,
> > what is meaning of recursive depth ? I see calls to cdef$, seq$
> > tables/views does it hint something . I though procedure is using
> some
> > sequence and these are internal calls to generate seq numbers . Is
> that rite
> > ?
> >
> > -ak
> >
> >
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Jonathan Lewis
> INET: jonathan_at_jlcomp.demon.co.uk
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: AK
  INET: oramagic_at_hotmail.com

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Received on Wed Mar 12 2003 - 11:18:01 CST

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