禁用Oracle 11gR2 DataGuard默认审计功能

audit_trail string DB大家好！最近公司服务器system表空间越来越大，segments logical reads，segments physical reads 越来越高

NAME TYPE VALUE
--------------------------------- ----------- ------------------------------
audit_trail string DB大家好！最近公司服务器system表空间越来越大，segments logical reads，segments physical reads 越来越高，，awr报告里体现的对象是AUD$,很明显可以定位是开启审计功能导致。下面我来给大家介绍如何停止DataGuard架构的审计功能：

1.检查应用连接停止状态

SQL> select USERNAME,STATUS from v$session where username is not null;

USERNAME STATUS
------------------------------ --------------
SYS ACTIVE

2.停止主库传输进程

alter system set LOG_ARCHIVE_DEST_STATE_2=defer scope=both;

3.停止备库实时应用

alter database recover managed standby database cancel;

4.查看当前审计状态

SQL> show parameter audit_trail;

NAME TYPE VALUE
--------------------------------- ----------- ------------------------------
audit_trail string DB

5.修改主库审计参数

alter system set audit_trail=none scope=spfile;

6.查询主库审计表数据量

SQL> select count(*) from SYS.AUD$;

COUNT(*)
----------------
21545536

7.停止主库数据库

shutdown immediate;

8.启动主库数据库

startup;

9.清理审计表数据

truncate table SYS.AUD$;

10.检查审计参数设置是否正确

SQL> show parameter audit_trail;

NAME TYPE VALUE
------------------------------- ----------- ------------------------------
audit_trail string NONE

11.查看备库审计参数

SQL> show parameter audit_trail;

NAME TYPE VALUE
-------------------------------- ----------- ------------------------------
audit_trail string OS