sql performance tuning steps

= 'mysql-bin.000035 ',-> MASTER_LOG_POS = 399;After the change master to command is executed, run the following command TO start SLAVE:Root @ localhost: mysql 08:33:49> start slave;So far, our Replication environment has been set up. Readers can perform tests on their own to try to build the MySQL Replication. If you need to learn more detailed steps during the MySQL Replication setup process, you can refer to the MySQL official manual.Conclusion 13.

daily data calculation is only 20 minutes, but if I want to count the whole month, The system takes more than 10 hours (SQL statements degrade performance in the presence of large data volumes). This divide-and-conquer approach helps performance in the face of big data, just like the merge sort. Performance optimizati

user trace file records the statistics that are executed by a user's SQL statement. Start user tracking can be at the instance level and session level. Instance level: Sets the Sql_trace initialization parameter to TRUE and generally does not advocate tracking user actions at the instance level Session level: Executes the dbms_system.set_sql_trace_in_session function, as follows EXECUTE dbms_system.set_sql_trace_in_session (8,12,true); The Dbms_syste

Build high performanceASP. NETSite Chapter 5-Performance Tuning Overview (previous) During this time, the seriesArticleI reorganized it. The previous introduction to performance optimization was not very clear. It can be said that starting from this article, it is the beginning of a complete series. Links to articles: Build high performanceASP. NETSit

Database Tuning tutorial (4) Explain performance analysis command, tuning explain In the previous chapter, we learned how to find slow queries and record statements into logs. How can we know where statement problems occur after slow queries are found. This chapter describes how to use the database performance analysis

Tags: mysql optimizerBased on a common version of MySQL serverPurpose: Speed up the responsiveness of the serverNumber of processes = Process * thread1, the query process of MySQL1) The client sends a connection request to the server2) server-side (connection pooling) threading to respond to user requests3) User initiated SQL statement query database select * FROM DB.A;4) Query cache: Record the user's SQL

Article Source: http://www.cnblogs.com/dingjie08/archive/2009/11/10/1599929.htmlObjectiveRecently help friends to run the platform for Performance tuning, the effect is good, so write it out together to exchange. If the article has you feel wrong, or do not understand, please add QQ Group: 4656272, Welcome to correct and discuss together. (PS: Vulgar Humanities pen is poor, crossing please more magnanimous)

Tags: sdn is ola visible reason water personal tuning tunToday, while watching Tri Hua's SQL optimization book, he saw a case in which he solved the SQL performance problem, and Tri Hua the teacher successfully positioned the problem and solved it. Here, on the basis of Tri Hua teacher analysis and positioning, do furt

MySql Performance Tuning (4) Quick table structure modification and mysql Tuning 1. Modify the varchar type To meet your needs, change varchar (6) To varchar (8). A better method is not to use altertable modify, but to use the following steps: A. Create A temporary table and set varchar to varchar (8) as fol

access, and one point, is the index of the cluster factor, when this value is very high (perhaps a lot of friends notice that Sometimes a SQL logical reading is much larger than the whole table, that's all, even if the data you access is small, it's possible to go through a full table scan, and the cluster factor problem is almost inevitable in the case of many different fields, so, to really master the optimization, We must know and understand the b

in several places. However, at this time, we only choose the one with the greatest impact for optimization. 3. Solve the identified performance fault point. 4. Test. Collect data and compare it with before optimization to see if it improves performance. 5. Repeat steps 1 to 4. Although some rules have been proposed above, we can flexibly handle certain situation

Note: This article is the third of our series of PHP performance analysis, click here to read PHP performance analysis first: Xhprof Xhgui Introduction, or PHP performance analysis second: In-depth study of Xhgui.In the first chapter of this series, we introduced Xhprof. In the second chapter, we studied the Xhgui UI, and now the last one, let's use Xhprof/xhgui

Do you need to have a detailed analysis of key performance factors that allow you to control and tune DB2 UDB and DB2 applications? Or have you ever had a problem with a DB2 server, but you can't detect the cause of the problem in the current snapshot, and you want to have historical monitoring data? DB2 Performance Expert V2.1 is a tool that can help you accomplish the above tasks. The 1th part of this ar

Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most effective ways to do this is through Oracle tuning. It has a large number of tuning parameters and techniques to improve the p