It is the application code or the interface drivers...
For example, if you SQL trace an application executing through ODBC from
connect to disconnect, you'll see lots of statements like "SELECT * FROM
" where they only parse but never execute. My guess is that
the ODBC driver is using those calls to perform rough "describes" or
something of that purpose. I see it more often from the MS-supplied ODBC
drivers for Oracle rather than the Oracle-supplied ODBC drivers. The
Oracle-supplied drivers tend to query ALL_OBJECTS directly, instead...
I don't know if you're using ODBC and MS-supplied Oracle ODBC drivers in
particular, but that's one possible scenario. If they're not using ODBC,
then the PSFT tools may themselves be doing something similar as a
platform-independent way of get descriptions of database objects...?
One trick to get good SQL traces from connect to disconnect for specific
user accounts: embed the DBMS_SESSION.SET_SQL_TRACE procedure inside an
AFTER LOGON database-event trigger (i.e. Oracle8i new feature) for a
specific user account. Once created, you can enable and disable the trigger
to turn tracing on and off. Just remember to disable (or drop) this trigger
when you're done tracing -- otherwise you'll *never* forget the time when
you forgot! I learned the hard way, and its a good thing the production
DBAs affected were so good-natured about it (beers all around go a long
way!)...
Hope this helps...
- Original Message -
To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]>
Sent: Tuesday, June 04, 2002 7:38 AM
Hi All,
From where comes the problem that when I check v$sqlarea & v$sqltext I
get 2 executes and 4 parses or something similar.
Why would a statement that executes once be parsed twice?
Oracle 8.1.7.3
People tools 8
THX
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