oracle query optimization tool

Oracle execution plan mechanism to improve query performance new SQL statements is the most important component of the Oracle SQL statement execution time. However, by understanding the internal execution plan generation mechanism of Oracle, you can control the number of times that

MySQL. In addition, you may not be able to find/var/lib/mysql during runtime. sock error, simple from/tmp/mysql. just link one sock. Note that pt-index-usage can only analyze slow query logs. to fully analyze the index usage of all queries, set slow_launch_time to 0, therefore, please use this tool with caution. If you use it online, you 'd better analyze it in the early morning, especially when analyzing

In view of this situation, artificial Intelligence automatic SQL Optimization tool came into being. Now I'm going to introduce you to this tool: Sqltuning for SQL Server. 1. SQL Tuning Introduction SQL turning is a tool in the Quest Central software produced by Quest Corporation. Questcentral (Figure 1) is an integr

SQL statements are the only way to operate databases and play a decisive role in database system performance. There are many ways to write SQL statements under the same condition, some of which often have a great impact on performance. But how can we ensure that high-performance SQL statements can be written when everyone has different levels of understanding the SQL language? artificial intelligence automatic SQL optimization tools have emerged. Now

Recently, I have been working on a statistical page optimization job, and the project is nearing completion. So I will share some of the optimization experiences with you. First, let's introduce the environment of this project. As this is an old project and developers are basically absent, ASP + Oracle and oh my gold are used! The main function of the page is to

tables in the condition cannot be indexed, such as: YS_DF>CX_DF, cannot be optimizedQC_BH | | Kh_bh= ' 5400250000 ', optimized processing: qc_bh= ' 5400 ' and kh_bh= ' 250000 'Iv. OtherOracle's hints feature is a relatively strong feature and is a complex application, and hints are only a recommendation to Oracle, and sometimes Oracle may not follow the prompts for cost considerations. According to practic

stand, do not know what everyone is feeling ... 4. View the Webmaster Toolbox This tool needs downloading, download view its Webmaster Toolbox, after decompression can be used directly, do not need to install. is divided into Webmaster Toolbox and Keyword ranking query tool, Webmaster Toolbox is mainly used to query

obtaining the data:Dynamic Performance view: Oracle uses a set of dynamic performance views to monitor databases. The view names start with "V $. Sys users have these views.Oracle and SNMP (Simple Network Management Protocol) support: SNMP allows users to write their own tools and applications.Explain plan: an SQL statement that lists the access paths selected by the query optimizer.SQL tracking

The ORACLE optimization I have done is actually at the SQL optimization level (my predecessors once told me three levels about database optimization: one is SQL optimization, for example The ORACLE

MySQL optimization-to do what you want, you must first sharpen the tool's EXPLAIN MySQLexplain BitsCN.com Recently, I have been getting familiar with MySQL and it is imminent to understand how to optimize it. to do this, you must first sharpen the tool. Recently, I plan to learn about several frequently used tools to optimize MySQL. Today, I will give a brief introduction to EXPLAIN.Prepare the MySQL versio

increased, which pages have decreased the number of browsing, which pages have increased the number of views, as shown: 　　 The image above shows that most of the pages in the site are obviously rising, then it shows that the site's keyword rankings rise in order to attract more users to visit the site is also the content of the site is the value of users. And the rise of the page to the Webmaster Analysis site optimization effect is very

"-------------------------------------------------------------------------------Begin DBMS_SQLTUNE.drop_tuning_task (task_name => 'ft8s1pfmz9ph0d _ AWR_tuning_task '); end;What is the difference between Oracle 11g and 10g? Introduction to new features of ORACLE 11gOracle 11g has now started beta testing. Like other products before, the new generation of oracle wi