oracle大数据量插入慢咋整

oracle大数据量插入慢咋整

alter index ind_t_object_id unusable;

下面是测试的过程：

SQL> insert into milktest select * from all_objects;
rollback;

72271 rows created.

Elapsed: 00:00:02.71
SQL> 
Rollback complete.
SQL>  alter index ind_t_object_id unusable;

Index altered.

Elapsed: 00:00:00.08
SQL> insert into milktest select * from all_objects;

72271 rows created.

Elapsed: 00:00:02.26
SQL> rollback;

Rollback complete.

Elapsed: 00:00:00.31
SQL> insert into milktest select * from all_objects;

72271 rows created.

Elapsed: 00:00:01.36
SQL>  alter index ind_t_object_id enable;

Index altered.

Elapsed: 00:00:00.13
SQL> insert into milktest select * from all_objects;

72271 rows created.

Elapsed: 00:00:02.91
SQL> rollback;

Rollback complete.

Elapsed: 00:00:00.32
SQL> insert into milktest select * from all_objects;
rollback;

72271 rows created.

Elapsed: 00:00:02.24
SQL> 
Rollback complete.

Elapsed: 00:00:00.30
SQL> 

最后建议收集一把统计信息。