如何禁用Oracle AWR自动采样功能

如何禁用Oracle AWR自动采样功能

链接：http://www.eygle.com/archives/2012/03/disable_enable_awr.html

在Oracle 10g中，AWR采样缺省部署于数据库中，那么如何禁用这个功能呢？

在Metalink Note： 436386.1中，Oracle提供了一个增强脚本，称为： dbmsnoawr.plb

通过这个脚本可以启用和禁用AWR采样功能，从原则上，为未购买该部分功能授权的用户提供了一个退出途径。

在Oracle Database 11g中，可以通过参数CONTROL_MANAGEMENT_PACK_ACCESS 控制组件包的访问。

该脚本的内容如下：

Rem

Rem dbmsnoawr.sql

Rem

Rem Copyright (c) 2006, Oracle. All rights reserved.

Rem

Rem NAME

Rem dbmsnoawr.sql - Declaration of the DBMS_AWR package

Rem

Rem DESCRIPTION

Rem Utilities for disabling and getting status of AWR

Rem

Rem NOTES

Rem

Rem MODIFIED (MM/DD/YY)

Rem gwood 04/13/07 - created

Rem

create or replace package dbms_awr as

-- PACKAGE dbms_awr

-- This package allows users to disable AWR functionality in a Oracle 10g+ database.

-- The use of this package is not resticted by licencing of the Diagnostic Pack.

-- Additionally this package contains two functions that can be used to determine

-- if AWR is currently enabled.

--

-- PROCEDURE dbms_awr.disable_awr

-- PURPOSE: turns off collections into Automatic Workload Repository

-- PARAMETERS: none

procedure disable_awr;

-- PROCEDURE dbms_awr.enable_awr

-- PURPOSE: turns on collections into Automatic Workload Repository. The capture interval

-- is set to the default of 60 minutes.

-- PARAMETERS: none

procedure enable_awr;

-- FUNCTION dbms_awr.awr_enabled

-- PURPOSE: Returns TRUE if Automatic Workload Repository is performing periodic capture.

-- Returns FALSE if Automatic Workload Repository periodic capture is disabled.

-- PARAMETERS: none

function awr_enabled return boolean;

-- FUNCTION dbms_awr.awr_status

-- PURPOSE: Returns 'ENABLED' if Automatic Workload Repository is performing periodic capture.

-- Returns 'DISABLED' if Automatic Workload Repository periodic capture is disabled.

-- PARAMETERS: none

function awr_status return varchar2;

end dbms_awr;

/

create or replace package body dbms_awr wrapped

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abcd

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abcd

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abcd

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b

27b 1de

XeDco+SpVfG9KEZ2ikXc00yhW88wg2P3AK7bfHRAWE7VX0b1S25KKJCp5VrehjNR9oaXoWT1

GGfYVnyl/lLyux308Fmhfp1y9pjrQyux50RY8xmHmiSG2bFbFs2Upn6MLYcfsqsW+joOTKYe

4TyFpXVqzVWS+Tjt8bcmSiai64IVcdOB3Q7Y6kQ8PGwqXqAiy9sFQKD0X6RC/ePGAQzUKwvS

3L8/hKgjdK9Fgw8bb7v1HTq22OJlAv+R/DYCSK57rPmAkyx/XLuXcPo3hcYs8fvUUAO33szW

gy5zNau9U7xiyAOExBz9Vh0U7EaMRl6rLr6UXpk/0tk3BW0W/GVo3XfdSzUpGN5aKa1xF2Yh

trcMV3KuK/FfIpy0bNDxSQ3LFuOsB8i5xzhj/dCqMxT4dO2awc0hnP3XeLhxWDvcEuqdkR9O

u+Z6US/LtRISXt2I8zFq6/aDSuOXTor9KQ1jYA==

/

该脚本包含两个过程和两个函数，通过disable_awr / enable_awr 就可以禁用或者启用AWR采样功能：

SQL> @D:\dbmsnoawr.plb

Package created.

Package body created.

SQL> desc dbms_awr

FUNCTION AWR_ENABLED RETURNS BOOLEAN

FUNCTION AWR_STATUS RETURNS VARCHAR2

PROCEDURE DISABLE_AWR

PROCEDURE ENABLE_AWR

SQL> exec dbms_awr.disable_awr

PL/SQL procedure successfully completed.

SQL> select dbms_awr.awr_status from dual;

AWR_STATUS

-------------------------------------------------------

DISABLED

SQL> exec dbms_awr.enable_awr

PL/SQL procedure successfully completed.

SQL> select dbms_awr.awr_status from dual;

AWR_STATUS

-------------------------------------------------------

ENABLED

这个脚本本质上非常简单，就是通过将快照采样价格设置为0和60来控制禁用和启用的。

PROCEDURE DISABLE_AWR

IS

BEGIN

DBMS_WORKLOAD_REPOSITORY.MODIFY_SNAPSHOT_SETTINGS(INTERVAL => 0);

END;

PROCEDURE ENABLE_AWR

IS

BEGIN

DBMS_WORKLOAD_REPOSITORY.MODIFY_SNAPSHOT_SETTINGS(INTERVAL => 60);

END;

记录供参考