自动通过trigger捕获DML语句

这是一个通过触发器来监控DML语句的例子.

SQL> desc t1
Name Null? Type
----------------------------------------------------- -------- ------------------------------------
A NUMBER

自动通过trigger捕获DML语句

SQL> desc t1
Name Null? Type
----------------------------------------------------- -------- ------------------------------------
A NUMBER

SQL> desc t_sql
Name Null? Type
----------------------------------------------------- -------- ------------------------------------
USERNAME VARCHAR2(30)
CLIENT_IP VARCHAR2(20)
SQL_TEXT VARCHAR2(4000)
TABLE_NAME VARCHAR2(30)
OWNER VARCHAR2(30)
fromdate date

SQL> create or replace trigger capt_sql
2 BEFORE DELETE OR INSERT OR UPDATE ON t1
3 declare
4 n number;
5 stmt varchar2(4000);
6 sql_text ora_name_list_t;
7 begin
8 n := ora_sql_txt(sql_text);
9 FOR i IN 1..n LOOP
10 stmt := stmt || sql_text(i);
11 END LOOP;
12
13 insert into t_sql(USERNAME,CLIENT_IP,SQL_TEXT,TABLE_NAME,OWNER,fromdate)
14 values(user,sys_context('userenv','ip_address'),stmt,'T1','RAINY',sysdate);
15
16 end;
17 /

Trigger created.

SQL> insert into t1(a) values(1);

1 row created.

SQL> update t1 set a = 2 where a = 1;

1 row updated.

SQL> delete t1;

3 rows deleted.

SQL> commit;

Commit complete.

SQL> select * from t_sql;
我在原创的基础上加了时间字段，这样就可以看到是什么时间操作的。