Rich, I went thru the archives. Are you using the option 'cascade=>true' for
gather_table_stats?
-----Original Message-----
Jesse, Rich
Sent: Wednesday, December 03, 2003 4:21 PM
To: Multiple recipients of list ORACLE-L
Yes -- same platform and version. If you look on the list archives
(fatcity.com, for example) for a subject of "Burned by DBMS_STATS **AGAIN**"
back in April 2003, you may get some insight.
There are also known bugs in GATHER_SCHEMA_STATS in 8i. The recommendation
is to iteratively call GATHER_TABLE_STATS.
GL!
Rich
Rich Jesse System/Database Administrator
[EMAIL PROTECTED] Quad/Tech Inc, Sussex, WI USA
-----Original Message-----
Sent: Wednesday, December 03, 2003 3:04 PM
To: Multiple recipients of list ORACLE-L
Hello,
Oracle 8.1.7.4 on HP-UX 11i
A week ago, we replaced 'analyze table ... estimate statistics sample 10
percent' with dbms_stats.gather_schema_stats('x', estimate_percent=>10,
cascade=>true, degree=>4, method_opt=>''for all indexed columns size 2')
Performace is good against partitioned tables but not for non-partitioned
tables.
Saw a note in Metalink that its better to do the above with 'cascade=>false'
and then do a gather_index_stats separately.
In my tests, I see that 'analyze' makes the CBO use an index while
dbms_stats is making the CBO to use a FTS instead.
Have you faced any similar issues?
TIA
Prakash
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