how to improve database performance

The advantage of parallel query is that it can process query jobs through multiple threads, thus improving the query efficiency. The SQL Server database provides the parallel query function for database servers with multiple CPUs to optimize the

1. select the most suitable field attributeMySQL can support access to large data volumes, but generally, the smaller the table in the database, the faster the query will be executed on it. Therefore, when creating a table, we can set the field

There are many things worth learning about in Oracle Database. In this article, we mainly talk about the Oracle SMON process, mainly about archive process ARCH and other aspects. We all know that there are two very small processes in the Oracle

For transaction TABLES, BEGIN and COMMIT should be used instead of lock tables to speed up insertion. Locking also reduces the overall time for multi-connection testing, although the maximum wait time for them to wait for LOCK will increase. For

The following articles mainly describe the actual operation solution for MySQL database performance optimization. With the continuous development of MySQL database, MySQL database performance optimization has become more and more important, the

Oracle Database TableSpace and archive [SQL] -- TableSpace (TableSpace) is a pioneering concept of Oracle. Table space makes database management more flexible and greatly improves database performance. -- Function: 1. avoid the risk of sudden

This article mainly discusses how to correctly improve the performance of MySQL databases. We mainly provide specific solutions from eight aspects. The following is a detailed description of the solution to improve the performance of the MySQL

The following articles mainly describe the Distributed Management of DB2 9. In this column, we will explain the actual operation steps for performing automatic maintenance, it also describes how to use the utility to throttle if maintenance

When an Oracle database instance is started, it needs to allocate shared memory to start background processes. The memory used by the Oracle database mainly involves PGA and SGA. 1. PGA Program global area, as the name suggests, is the global area

　　Overview: Most application performance management (APM) solutions only consider and analyze performance issues at a certain level of J2EE applications. This method is insufficient to solve the performance problems of complicated applications in

When a user process connects to the database and creates a corresponding session, the Oracle service process sets a PGA zone for the user to store the relevant content of the user session. When the user session ends, the Database System

During database initialization, an actual problem that administrators need to face is how to import large amounts of data into the database system. Some large-capacity data import and export tools are provided in the SQL Server database for the

Address: http://space.itpub.net/14751907/viewspace-438869 The reserved domain is used to implement functions that can only be implemented by self-programming. Notes uses the "$" symbol to identify the entries created by the system. 1. $ keepprivate:

In general Server databases operate in a single thread when performing query jobs. SQL Server provides the parallel query function to cope with large-volume query tasks. The advantage of parallel query is that it can process query jobs through

Reduces the interactions between applications and databases and the number of executions of the same SQL statement. Reduce the association between tables, especially for batch data processing, try to query data in a single table and perform logical

Design principles of data tables (1) database design should not be conducted for the entire system, but the database design of component units should be conducted for the Services processed by each component according to the components in the system

Oracle, as a large database, is widely used in financial, post and telecommunications, power, civil aviation, and other important sectors with a large data throughput and a wide spread of computer networks. For system administrators, it is

  The content of this lecture includes: 1: Diagnose database performance 2: configure the automatic workload file library 3: Use a database Consultant 4: use SQL access advisor to improve database performance 5. asynchronous submission About

This article provides a detailed analysis of how to use the pack, unpack, and ord functions of binary stream interface application instances. For more information, see pack, unpack and ord are powerful in processing binary bytes. Next I will

Four years ago, when I first came into contact with MySQL, the version was 4.1. At that time, I felt how this database was" Four years ago, when I first came into contact with MySQL, the version was 4.1. At that time, I felt how this database was"