Yes, the site is http://www.hotsos.com/dnloads/1/10053/Breitling2002.pdf.
Requires free membership
John Kanagaraj
<john.kanagara To: Multiple recipients of list ORACLE-L
[EMAIL PROTECTED]> <[EMAIL PROTECTED]>
Sent by: cc:
[EMAIL PROTECTED] Subject: RE: extremely long parse time
om
10/01/2002
02:30 PM
Please respond
to ORACLE-L
Thats a CBO trace. Have fun trying to read it :) Actually, there was an
excellent presentation from a Wolfgang Breitling on this very topic at
IOUG.
And I believe Cary's site carries it (hotsos.com).
John Kanagaraj
Oracle Applications DBA
DB Soft Inc
Work : (408) 970 7002
Listen to great, commercial-free christian music 24x7x365 at
http://www.klove.com <http://www.klove.com/>
** The opinions and facts contained in this message are entirely mine and
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not reflect those of my employer or customers **
-----Original Message-----
Sent: Tuesday, October 01, 2002 10:56 AM
To: Multiple recipients of list ORACLE-L
I know what a 10046 trace does. What's
a 10053 trace?
----
Matt Adams - GE Appliances - [EMAIL PROTECTED]
Their fundamental design flaws are completely
hidden by their superficial design flaws.
- Douglas Adams
-----Original Message-----
<mailto:[EMAIL PROTECTED]> ]
Sent: Tuesday, October 01, 2002 12:42 PM
To: [EMAIL PROTECTED]
Cc: Adams, Matthew (GEA, MABG, 088130)
Importance: High
Matt,
Have you done a 10053 trace on this query?
Jared
"Adams, Matthew (GEA, MABG, 088130)" <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
09/30/2002 11:43 AM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
cc:
Subject: RE: extremely long parse time
OK, I think we're on to something here.
The DBA_TAB_COL_STATISTICS shows no rows for tables
owned by sys (although strangely, owner is not a column
of this table). However, the DBA_ANALYZE_OBJECTS view IS
listing objects owned by SYS, which implies that they have
been analyzed in the past.
Since I don't see any of the statisics filled in on the
DBA_TABLES entries for tables owned by SYS, what would
you recommend doing at this point?
"analyze table sys.XXXXX delete statistics"?
----
Matt Adams - GE Appliances - [EMAIL PROTECTED]
Their fundamental design flaws are completely
hidden by their superficial design flaws.
- Douglas Adams
-----Original Message-----
<mailto:[EMAIL PROTECTED]> ]
Sent: Monday, September 30, 2002 1:27 PM
To: '[EMAIL PROTECTED]'
Cc: Adams, Matthew (GEA, MABG, 088130)
Hmmm...anything SYS in DBA_TAB_COL_STATISTICS or DBA_ANALYZE_OBJECTS?
Is the COST column in your PLAN_TABLE null???
Rich Jesse System/Database Administrator
[EMAIL PROTECTED] Quad/Tech International, Sussex, WI
USA
-----Original Message-----
<mailto:[EMAIL PROTECTED]> ]
Sent: Monday, September 30, 2002 12:38 PM
To: Multiple recipients of list ORACLE-L
We are using First_rows for the optimizer mode,
but the last_analyzed column in DBA_TABLES and
DBA_INDEXES is NULL for all objects owned by SYS.
The really wierd part is: Changing the query
to use rule based optimization (via the /*+ RULE */ hint
caused it to execute sub-second.
Why would optimization mode affect parsing? Is query
optimization considered part of the parsing routine?
Matt
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