SQL*Plus: Release 10.2.0.3.0 - Production on Wed Feb 20 00:42:10 2008

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o
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options

SQL> nn /
Connected.
SQL> create table test as select *
2 from dba_objects;

Table created.

SQL> create index test_idx on test(object_id);

Index created.

SQL> SQL> alter index test_idx monitoring usage;

Index altered.

SQL>
SQL> select * from v$object_usage;

INDEX_NAME TABLE_NAME MON USE
—————————— —————————— — —
START_MONITORING END_MONITORING
——————- ——————-
TEST_IDX TEST YES NO
02/20/2008 00:42:26

SQL> exec dbms_stats.gather_table_stats(user,’test’,cascade=>true);

PL/SQL procedure successfully completed.

SQL> select * from v$object_usage;

INDEX_NAME TABLE_NAME MON USE
—————————— —————————— — —
START_MONITORING END_MONITORING
——————- ——————-
TEST_IDX TEST YES YES
02/20/2008 00:42:26

10g测试过程

SQL> alter index idx_k monitoring usage;

索引已更改。

SQL> select index_name,table_name,used from v$object_usage where table_name=’K';

INDEX_NAME TABLE_NAME USE
—————————— —————————— —
IDX_K K NO

SQL> exec dbms_stats.gather_table_stats(user,’K',cascade=>true);

PL/SQL 过程已成功完成。

SQL> select index_name,table_name,used from v$object_usage where table_name=’K';

INDEX_NAME TABLE_NAME USE
—————————— —————————— —
IDX_K K NO

SQL> select * from v$version;

BANNER
—————————————————————-
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production

9i测试过程

SQL> create table k(id int);

表已创建。

SQL> create index idx_k on k(id);

索引已创建。

SQL> alter index idx_k monitoring usage;

索引已更改。

SQL> select index_name,table_name,used from v$object_usage where table_name=’K';

INDEX_NAME TABLE_NAME USE
—————————— —————————— —
IDX_K K NO

SQL> exec dbms_stats.gather_table_stats(user,’K',cascade=>true);

PL/SQL 过程已成功完成。

SQL> select index_name,table_name,used from v$object_usage where table_name=’K';

INDEX_NAME TABLE_NAME USE
—————————— —————————— —
IDX_K K YES

SQL> select * from v$version;

BANNER
—————————————————————-
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
PL/SQL Release 9.2.0.1.0 - Production
CORE 9.2.0.1.0 Production
TNS for 32-bit Windows: Version 9.2.0.1.0 - Production
NLSRTL Version 9.2.0.1.0 - Production