Bug in documentation about dbms_stats.gather_schema_stats or in the dbms_stats itself

[sourcecode language=”sql”]
SQL> exec dbms_stats.delete_schema_stats(‘HR’);

PL/SQL procedure successfully completed.

Elapsed: 00:00:01.31
SQL> begin
2 for r in (select table_name
3 from dba_tables t
4 where t.owner=’XTENDER’
5 and table_name like ‘TMP%’
6 )loop
7 dbms_stats.delete_table_stats(‘XTENDER’,r.TABLE_NAME);
8 end loop;
9 end;
10 /

PL/SQL procedure successfully completed.

Elapsed: 00:00:00.31
SQL> select
2 owner
3 ,table_name
4 ,num_rows
5 ,last_analyzed
6 from dba_tab_statistics t
7 where owner=’XTENDER’ and table_name like ‘TMP%’
8 or owner=’HR’;

OWNER TABLE_NAME NUM_ROWS LAST_ANALYZED
—————————— —————————— ———- ——————-
HR COUNTRIES
HR DEPARTMENTS
HR EMPLOYEES
HR JOBS
HR JOB_HISTORY
HR LOCATIONS
HR REGIONS
XTENDER TMP
XTENDER TMP1
XTENDER TMP_CONTENT
XTENDER TMP_DATA
XTENDER TMP_DOCUMENT
XTENDER TMP_EXCH

13 rows selected.

Elapsed: 00:00:00.11
SQL> col dt new_value dt
SQL> select sysdate dt from dual;

DT
——————-
2013-01-27 00:30:21

1 row selected.

Elapsed: 00:00:00.00
SQL> DECLARE
2 filter_lst DBMS_STATS.OBJECTTAB := DBMS_STATS.OBJECTTAB();
3 BEGIN
4 filter_lst.extend(2);
5 filter_lst(1).ownname := ‘XTENDER’;
6 filter_lst(1).objname := ‘TMP%’;
7 filter_lst(2).ownname := ‘HR’;
8 DBMS_STATS.GATHER_SCHEMA_STATS(NULL, obj_filter_list => filter_lst,
9 options => ‘gather’);
10 END;
11 /

PL/SQL procedure successfully completed.

Elapsed: 00:03:16.89
SQL> select owner,table_name
2 from dba_tables t
3 where t.LAST_ANALYZED>timestamp’&dt’+0;

OWNER TABLE_NAME
—————————— ——————————
XTENDER TT
XTENDER TR_LOG
XTENDER IOT1
…[skipped 171 rows]…
XTENDER DEPARTMENTS

175 rows selected.

Elapsed: 00:00:01.04
[/sourcecode]