如何在Oracle中启用审计功能

要在Oracle中启用审计功能，您可以按照以下步骤操作：

1、使用sysdba权限登录到Oracle数据库。

2、运行以下命令启用标准审计功能：

```

SQL> ALTER SYSTEM SET AUDIT_TRAIL=DB SCOPE=SPFILE;

SQL> SHUTDOWN IMMEDIATE;

SQL> STARTUP;

```

3、运行以下命令启用审计功能：

```

SQL> AUDIT SELECT TABLE, INSERT TABLE, UPDATE TABLE, DELETE TABLE BY ACCESS;

SQL> AUDIT SELECT TABLE, INSERT TABLE, UPDATE TABLE, DELETE TABLE BY SESSION;

```

4、运行以下命令启用审计功能：

```

SQL> AUDIT DROP ANY TABLE BY ACCESS;

SQL> AUDIT CREATE ANY TABLE BY ACCESS;

SQL> AUDIT ALTER ANY TABLE BY ACCESS;

SQL> AUDIT DROP ANY PROCEDURE BY ACCESS;

SQL> AUDIT CREATE ANY PROCEDURE BY ACCESS;

SQL> AUDIT ALTER ANY PROCEDURE BY ACCESS;

```

5、在需要审计的表上设置审计功能：

```

SQL> AUDIT SELECT, INSERT, UPDATE, DELETE ON BY ACCESS;

```

6、重新启动数据库以使更改生效。

请注意，启用审计功能可能会对系统性能产生一定影响，因此建议在必要时才启用审计功能。