Using dbms_stats

Question

Hi ,
I tried to ran the following dbms_stats for a new table
declare
begin
dbms_stats.gather_table_stats(ownname => xx, tabname => 'TESTING_BT' ,
options => 'GATHER AUTO', method_opt => 'for all columns size repeat',
estimate_percent => dbms_stats.auto_sample_size ,cascade => TRUE ) ;
end;
and it gave me the error :
ORA-06550: line 5, column 40:
PLS-00302: component 'AUTO_SAMPLE_SIZE' must be declared
ORA-06550: line 3, column 1:
PL/SQL: Statement ignored
ques :
1) i thought it will auto gather 5 - 20% of the existing records as per what i read ?
2) does it mean i need to update the "SAMPLE_SIZE" column with some values from the user_tables that has table_name = 'TESTIGN_BT' ?
3) if i really need to do pt 2 then the value is in terms of no of records or a percentage will do ?
kindly advise
tks & rdgs

Answer 1

First off all in 9.2 release options parameter is not proper for gather_table_stats.
It is onlyproper for gather_schema_stats or gather_databas_stats. So your statment
should look like this.
begin
dbms_stats.gather_table_stats(ownname => 'mob', tabname => 'T1' ,
method_opt => 'for all columns size repeat',
estimate_percent => dbms_stats.auto_sample_size ,cascade => TRUE ) ;
end;
There are several bugs in 9.2 about SAMPLE_SIZEcolumn is user_tables. You can
refer to "WHEN USING DBMS_STATS.AUTO_SAMPLE_SIZE NUM_ROWS=SAMPLE_SIZE"
Note:302802.1
Best Regards
Krystian Zieja / mob