Oracle11g AWR深度剖析发掘卓越表现（oracle11gawr）

Oracle11g AWR深度剖析：发掘卓越表现

Oracle11g Advanced Workload Repository (AWR) is a powerful tool for database performance analysis and tuning. It provides a comprehensive set of performance metrics that can be used to diagnose and troubleshoot performance issues in the database. In this article, we will explore the capabilities of Oracle11g AWR and how it can be used to uncover exceptional performance.

Oracle11g AWR collects and stores performance data at regular intervals, typically for a duration of one hour, in the form of snapshots. These snapshots contn information on the performance of the database, including statistics on CPU usage, I/O activity, memory usage, and other resource usage. This information is then used to generate reports that can be used to analyze the performance of the database over a period of time.

To use Oracle11g AWR, you first need to enable it in your database. This can be done by setting the parameter STATISTICS_LEVEL to TYPICAL or ALL. When enabled, Oracle11g AWR automatically collects performance data at regular intervals and stores it in the database for analysis.

One of the key features of Oracle11g AWR is the ability to compare snapshots and generate reports that show the changes in performance metrics over time. For example, you can compare two snapshots and see how CPU usage has changed over a period of time or how I/O activity has increased or decreased. This information can be used to identify performance bottlenecks and take appropriate actions to optimize the database.

Another useful feature of Oracle11g AWR is the ability to drill down into specific areas of the database and analyze performance at a more granular level. For example, you can use Oracle11g AWR to analyze the performance of a specific SQL statement or a particular database object such as a table or index. This information can be used to identify areas of the database that are causing performance issues and take corrective action.

In addition to the standard reports that are generated automatically by Oracle11g AWR, you can also create custom reports that are tlored to your specific needs. These reports can be created using the Oracle BI Publisher or other third-party reporting tools. This allows you to create reports that are specific to your organization and provide the information you need to make informed decisions about database performance.

Overall, Oracle11g AWR is a powerful tool for database performance analysis and tuning. By regularly collecting and analyzing performance data, it allows you to uncover exceptional performance and identify areas of the database that can be optimized for improved performance. With the ability to drill down into specific areas of the database and create custom reports, you can gn a deep understanding of your database and take appropriate actions to improve performance over time.

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