Cool!  Sounds like a buffer thing.....

what is AVG_ROW_LEN on table?
what is event, p1,p2,p3 for that sid in v$session_wait?
what if table is EMPTY ( well, ok...put in faux PKs, at least)
and then, there are all the AQ settings to consider....


-----Original Message-----
Sent: Tuesday, October 30, 2001 4:35 AM
To: Multiple recipients of list ORACLE-L


Hello,

I'm having a very strange AQ problem, and I can't for the life of me
work out what's going wrong. The platform is Solaris 2.6 and 2.8, Oracle
8.1.7.2, C++ OCI application compiled with SunPro. There is a table with
about a dozen columns, one of which is a primary key. The application
does a SELECT on the primary key column, then reads these into an array.
Then, for each element in this array it loops, doing SELECT * FROM table
WHERE primarykey = element. We have isolated the problem to this
specific bit of code.

If there are <700 rows in this table, or if the first query adds ' WHERE
rownum < 700', everything works exactly as you would expect. If it tries
to retrieve more than 700... the AQs for that schema just stop working,
until the database is restarted. Has anyone come across something like
this before? I can't understand how SELECT could cause this (there are
triggers on this table for INSERT, UPDATE and DELETE, each of which does
submit a message to an AQ).

Thanks,

g



--
Guy Hammond
AVT Technologies
1 Martha's Buildings
180 Old Street
London EC1V 9BP

Telephone: 020 7454 4174
Mobile: 07966 164687
Web: http://www.avt.co.uk/ 



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