Oracle-L: 10046 trace - weird library misses

From: Gorbounov,Vadim <vadim.gorbounov_at_liberate.com>
Date: Thu, 13 Feb 2003 06:49:09 -0800
Message-ID: <F001.0054BC61.20030213064909@fatcity.com>

Dear friends,

I traced one of our test cases and found something weird.

Did anybody else observe this?

Env:
server - 9.0.1.4, Solaris.
client - weblogic 7, uses original oracle thin 9.0.1 jdbc driver to connect.

In fact, I can reproduce all this from SQLPlus

Here is an excerpt from tkprof below - why every parse is a hard parse? Looks like the problem doesn't appear when 10046 is not set, and it appers ONLY on pl/sql blocks returning data to client, normal selects OK. Looks like bug again. Any workaround?

And what are these "Misses in library cache during execute"?

9.2.0.2 on Linux works fine, i.e. no misses once it has been parsed.

BEGIN :1 := FN_GET_STATUS_ID(:2,:3); END; call count cpu elapsed disk query current rows

------ -------- ---------- ---------- ---------- ----------
Parse 40 0.07 0.08 0 0 0 0 Execute 80 0.62 1.55 64 1492 0 80 Fetch 0 0.00 0.00 0 0 0 0
------ -------- ---------- ---------- ---------- ----------
total 120 0.69 1.63 64 1492 0 80

Misses in library cache during parse: 40 Misses in library cache during execute: 40 Optimizer goal: CHOOSE
Parsing user id: 40

This select

select LOADED_VERSIONS, EXECUTIONS, LOADS,PARSE_CALLS, parsing_user_id from v$sql
where sql_text like 'BEGIN :1 := FN_GET_STATUS_ID(:2,:3); END;';

gives out whole bunch of these record groups

LOADED_VERSIONS EXECUTIONS LOADS PARSE_CALLS PARSING_USER_ID

---------- ---------- ----------- --------------- 1 1 1 1 40 1 1 1 0 40 .... repeated N times

Thank you for you time

Vadim G
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Author: Gorbounov,Vadim
INET: vadim.gorbounov_at_liberate.com

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