Download e-book for kindle: Oracle Enterprise Manager. Database Tuning with the Oracle by Jamen L. M.

By Jamen L. M.

The Oracle Tuning Pack presents complex instruments that concentrate on tuning the top effect database functionality components, akin to: software SQL, indexing options, example parameters controlling I/O, SGA functionality, and item sizing, placement, and reorganization. The instruments incorporated during this pack are designed to interact to complete many database tuning projects. The functions incorporated within the Oracle Tuning Pack are: Oracle SQL research. Oracle specialist, define Editor, define administration, Oracle Index Tuning Wizard, Reorg Wizard, and the Tablespace Map.

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Extra info for Oracle Enterprise Manager. Database Tuning with the Oracle Tuning Pack

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Introduction to Oracle SQL Analyze 3-7 The SQL Tuning Process Step One: Starting a Tuning Session There are several ways to begin a tuning session, depending on the status of the SQL you want to tune. ■ ■ To identify problem statements that have been run or are about to be run on the database, you’ll want to begin by analyzing the statements gathered by TopSQL or stored in the SQL History. ” To create a new statement, you can enter a new SQL statement or import or copy an existing SQL statement into Oracle SQL Analyze.

The V$SQLAREA view lists statistics on shared SQL areas, and provides statistics on SQL statements that are in memory, parsed, and ready for execution or which might have been executed already. To start a TopSQL analysis: 1. Click on the TopSQL object in the Navigator window. A SQL options dialog opens. 2. Select the resource in the Sort Statistic field for the consumption you want to measure. 3. In the Count area, select the number of SQL statements you want displayed. 4. In the Additional Filters area, you can retrieve TopSQL statements that contain a specific string (such as schema name or a specific DML identifier), or select the types of SQL you want displayed--either recursive or statements generated by SQL Analyze.

Although SQL is a relatively easy language to learn, its non-procedural nature tends to obscure performance-related issues. As a result, it’s much harder to write efficient SQL than it is to write functionally correct SQL. Collecting data and analyzing performance can be difficult and time-consuming. Before the advent of Oracle SQL Analyze, you would need to run several different SQL scripts to obtain statistics describing the various database objects such as indexes and views, to generate the explain plan, and to Database Tuning with the Oracle Tuning Pack Methods of SQL Analysis and Tuning calculate the performance statistics for execution of a specific SQL statement.

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Oracle Enterprise Manager. Database Tuning with the Oracle Tuning Pack by Jamen L. M.


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