Home Database Mysql Tutorial AWR信息报告

AWR信息报告

Jun 07, 2016 pm 02:54 PM
oracle database

AWR报告是我们研究分析Oracle性能,特别是应用程序工作特性的重要工具手段。进入10g之后,随着CBO的推广、自动作业机制的确立,越

AWR报告是我们研究分析Oracle性能,特别是应用程序工作特性的重要工具手段。进入10g之后,随着CBO的推广、自动作业机制的确立,越来越多的运维人员乃至开发人员将AWR作为分析性能的工具。

除了AWR报告本身,Oracle还提供了一些AWR相关的脚本,用于进行辅助操作。本篇主要介绍awr Info脚本。

1、环境介绍

本篇使用Oracle 11gR2进行实验,具体版本为11.2.0.4。

[oracle@SICS-MIGPC-DB ~]$ sqlplus /nolog

SQL*Plus: Release 11.2.0.4.0 Production on Sat Oct 10 08:52:31 2015

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

SQL> conn / as sysdba

Connected.

SQL> select * from v$version;

BANNER

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

Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production

PL/SQL Release 11.2.0.4.0 - Production

CORE    11.2.0.4.0      Production

TNS for Linux: Version 11.2.0.4.0 - Production

NLSRTL Version 11.2.0.4.0 – Production

2、脚本执行

执行的生成脚本是在Oracle客户端。为避免由于版本原因带来的差异问题,笔者建议最好是在Oracle服务器端生成文件。

[oracle@SICS-MIGPC-DB ~]$ sqlplus /nolog

SQL*Plus: Release 11.2.0.4.0 Production on Sat Oct 10 09:16:45 2015

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

SQL> conn / as sysdba

Connected.

SQL> @?/rdbms/admin/awrinfo.sql

之后要求输入报告名称。

This script will report general AWR information

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Specify the Report File Name

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The default report file name is awrinfo.txt.  To use this name,

press to continue, otherwise enter an alternative.

Enter value for report_name:

最后会自动输出信息:

(若干输出)

(2b) ASH details (past 1 day)

**********************************

INST MIN_TIME        MAX_TIME          NUM_SAMPLES    NUM_ROWS AVG_ACTIVE

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

1 10:10:12 (10/09) 08:49:19 (10/10)        8,145        1,604      0.20

**********************************

(2c) ASH sessions (Fg Vs Bg) (past 1 day across all instances in RAC)

**********************************

Foreground %          90.0

Background %          10.0

MMNL %                  0.0

End of Report

Report written to awrinfo.txt

在当前目录下,会看到awrinfo.txt文件。下面会分部分进行解析:

3、结果解析

下面分为若干部分进行结果说明。

第一部分:报告信息说明。抽取出AWR配置信息和保留自动删除信息。

~~~~~~~~~~~~~~~

AWR INFO Report

~~~~~~~~~~~~~~~

Report generated at                         

09:18:28 on Oct 10, 2015 ( Saturday ) in Timezone +08:00                   

Warning: Non Default AWR Setting!                                                                             

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

Snapshot interval is 60 minutes and Retention is 8 days                                                       

DB_ID DB_NAME  HOST_PLATFORM                            INST STARTUP_TIME      LAST_ASH_SID PAR     

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

* 2746051042 SICSDB    SICS-MIGPC-DB - Linux x86 64-bit            1 10:28:41 (01/08)      23726128 NO   

第二部分:AWR镜像snapshot信息。依据规则,每次snapshot记录是保存在sysaux表空间里面的。经常会遇到SYSAUX不断增大超过限制的问题,一般都是由于AWR Purge引起的问题。

########################################################

(I) AWR Snapshots Information

########################################################

*****************************************************

(1a) SYSAUX usage - Schema breakdown (dba_segments)

*****************************************************

|                                                                                                             

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1663
14
PHP Tutorial
1266
29
C# Tutorial
1237
24
MySQL: An Introduction to the World's Most Popular Database MySQL: An Introduction to the World's Most Popular Database Apr 12, 2025 am 12:18 AM

MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.

Why Use MySQL? Benefits and Advantages Why Use MySQL? Benefits and Advantages Apr 12, 2025 am 12:17 AM

MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.

How to create cursors in oracle loop How to create cursors in oracle loop Apr 12, 2025 am 06:18 AM

In Oracle, the FOR LOOP loop can create cursors dynamically. The steps are: 1. Define the cursor type; 2. Create the loop; 3. Create the cursor dynamically; 4. Execute the cursor; 5. Close the cursor. Example: A cursor can be created cycle-by-circuit to display the names and salaries of the top 10 employees.

What steps are required to configure CentOS in HDFS What steps are required to configure CentOS in HDFS Apr 14, 2025 pm 06:42 PM

Building a Hadoop Distributed File System (HDFS) on a CentOS system requires multiple steps. This article provides a brief configuration guide. 1. Prepare to install JDK in the early stage: Install JavaDevelopmentKit (JDK) on all nodes, and the version must be compatible with Hadoop. The installation package can be downloaded from the Oracle official website. Environment variable configuration: Edit /etc/profile file, set Java and Hadoop environment variables, so that the system can find the installation path of JDK and Hadoop. 2. Security configuration: SSH password-free login to generate SSH key: Use the ssh-keygen command on each node

What to do if the oracle log is full What to do if the oracle log is full Apr 12, 2025 am 06:09 AM

When Oracle log files are full, the following solutions can be adopted: 1) Clean old log files; 2) Increase the log file size; 3) Increase the log file group; 4) Set up automatic log management; 5) Reinitialize the database. Before implementing any solution, it is recommended to back up the database to prevent data loss.

Oracle's Role in the Business World Oracle's Role in the Business World Apr 23, 2025 am 12:01 AM

Oracle is not only a database company, but also a leader in cloud computing and ERP systems. 1. Oracle provides comprehensive solutions from database to cloud services and ERP systems. 2. OracleCloud challenges AWS and Azure, providing IaaS, PaaS and SaaS services. 3. Oracle's ERP systems such as E-BusinessSuite and FusionApplications help enterprises optimize operations.

MySQL vs. Other Databases: Comparing the Options MySQL vs. Other Databases: Comparing the Options Apr 15, 2025 am 12:08 AM

MySQL is suitable for web applications and content management systems and is popular for its open source, high performance and ease of use. 1) Compared with PostgreSQL, MySQL performs better in simple queries and high concurrent read operations. 2) Compared with Oracle, MySQL is more popular among small and medium-sized enterprises because of its open source and low cost. 3) Compared with Microsoft SQL Server, MySQL is more suitable for cross-platform applications. 4) Unlike MongoDB, MySQL is more suitable for structured data and transaction processing.

How to stop oracle database How to stop oracle database Apr 12, 2025 am 06:12 AM

To stop an Oracle database, perform the following steps: 1. Connect to the database; 2. Shutdown immediately; 3. Shutdown abort completely.

See all articles