Just as a side-line observation - when I realised
that the problem should have been with the sequence,
I set up a small test on a multi-CPU box to run multiple
concurrent copies of:
begin
for i in 1..100000 loop
insert into t1 values (test_seq.nextval);
end loop;
end;
I couldn't get a single row cache lock wait.
This was using 8.1.7.4 on HPUX 11.
So I wonder if the waits you were seeing were a
side-effect of another issue, or highly version
dependent.
Regards
Jonathan Lewis
http://www.jlcomp.demon.co.uk
Coming soon a new one-day tutorial:
Cost Based Optimisation
(see http://www.jlcomp.demon.co.uk/tutorial.html )
Next Seminar dates:
(see http://www.jlcomp.demon.co.uk/seminar.html )
____England______January 21/23
The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html
-----Original Message-----
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
Date: 23 December 2002 14:40
>If I stated dc_segments in my original post, I apologize, I *did*
mean to
>say
>dc_sequences. At any rate, as usual, the problem was poor
application
>code.
>The row cache lock no longer shows up as one of the top 5 wait events
per
>statspack.
>
>And of course, the programmers never apologized, or even deigned to
>acknowledge
>appreciation in improving their application, they are simply acting
as
>offended
>cats will do, as though the DBA team doesn't exist.
>
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Author: Jonathan Lewis
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