Oracle 11g系统级别触发器来跟踪监控drop误操作

前言：
db中有一张表的数据老是紊乱，猜猜是经历过drop、create的数据同步操作，但是现在谁也不知道在哪里操作的，所以准备做一个触发器去记录下是哪个应用服务器那个db账号操作的。

3，系统级别触发器 3.1 触发事件

包括各种DDL操作以及各种数据库事件，ddl包括create、alter、drop、rename、grant、revoke、audit、noaudit、commit、truncate、analyze、associate statistics、disassociate statistis。触发时间可以before或者after

3.2 建立触发器记录的表 -- Create table create table Z_TRIG_SYS ( lt DATE, sid NUMBER, serial# NUMBER, username VARCHAR2(30), oSUSEr VARCHAR2(64), machine VARCHAR2(32), terminal VARCHAR2(16), object_name VARCHAR2(200), ora_sysevent VARCHAR2(200), program VARCHAR2(64), sqltext VARCHAR2(4000), status VARCHAR2(30), client_ip VARCHAR2(60), ora_dbname VARCHAR2(60), ora_client_ip_address VARCHAR2(60) ); -- Add comments to the columns comment on column Z_TRIG_SYS.lt is '录入时间'; comment on column Z_TRIG_SYS.sid is '当前session的id'; comment on column Z_TRIG_SYS.serial# is 'sid的序列号，顺序自增'; comment on column Z_TRIG_SYS.username is '登录的用户名'; comment on column Z_TRIG_SYS.osuser is '操作者的os系统'; comment on column Z_TRIG_SYS.machine is '操作者的机器名称'; comment on column Z_TRIG_SYS.object_name is '操作对象名称'; comment on column Z_TRIG_SYS.ora_sysevent is '操作事件'; comment on column Z_TRIG_SYS.sqltext is '执行的sql片段'; comment on column Z_TRIG_SYS.client_ip is '客户端ip'; comment on column Z_TRIG_SYS.ora_dbname is '执行的数据库'; comment on column Z_TRIG_SYS.ora_client_ip_address is '客户端ip地址'; 3.3 建立system级别触发器 create or replace trigger trig_system after drop on database begin if ora_login_user!='system' then insert into z_trig_sys( lt , sid , serial# , username , osuser , machine , terminal , object_name , ora_sysevent , program , sqltext , status , client_ip , ora_dbname , ora_client_ip_address ) select sysdate, s.SID, s.SERIAL#, s.USERNAME, s.OSUSER, s.MACHINE, s.TERMINAL, s.PROGRAM, ora_dict_obj_name, ora_sysevent, 'drop object on database', '', sys_context('userenv','ip_address'), ora_database_name, ora_client_ip_address from v$sql q, v$session s where s.audsid=(select userenv('SESSIONID') from dual) and s.prev_sql_addr=q.address AND s.PREV_HASH_VALUE = q.hash_value; -- commit; -- AND sys_context('userenv','ip_address') !='192.168.180.106'; end if; end trig_system; 3.4，调试报错

ORA-00604: error occurred at recursive SQL level 1
ORA-04092: cannot COMMIT in a trigger

去掉触发器中的commit;

4，查看监控结果，如下所示： SQL> create table zz_back(id number); Table created SQL> insert into zz_back values(1); 1 row inserted SQL> commit; Commit complete SQL> drop table zz_back; Table dropped SQL> select * from z_trig_sys; LT SID SERIAL# USERNAME OSUSER MACHINE TERMINAL OBJECT_NAME ORA_SYSEVENT PROGRAM SQLTEXT STATUS CLIENT_IP ORA_DBNAME ORA_CLIENT_IP_ADDRESS ----------- ---------- ---------- ------------------------------ ---------------------------------------------------------------- -------------------------------- ---------------- -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- ---------------------------------------------------------------- -------------------------------------------------------------------------------- ------------------------------ ------------------------------------------------------------ ------------------------------------------------------------ ------------------------------------------------------------ 2015/11/4 1 787 63023 POWERDESK Administrator WORKGROUP\WIN-TIMMAN WIN-TIMMAN plsqldev.exe ZZ_BACK DROP drop object on database 192.168.120.181 POWERDES SQL>

看到有记录了，但是有一些没有取到值，比如ora_client_ip_address等，有待继续完善