java jdbc connection pool

Label:Database connection pool (connection pool) the need for a JDBC database connection poolWhen using the development of a database-based Web program, the traditional pattern is basically the following steps: Establish a databas

basic function of the application server, and we take Apusic application server as an example to illustrate the configuration usage of the JDBC Connection pool. The Apusic JDBC Connection pool provides support for a variety of d

of the Application Server. We use Apusic Application Server as an example to describe how to configure and use the JDBC connection pool.Apusic JDBC connection pool supports multiple databases, such as Oracle, MS SqlServer, Sybase, Informix, and DB2.The Apusic

/** the JDBC database driver. */Specifies the connection driver public static final String db_driver = "DRIVER"; /** the JDBC database URL. */connection string public static final String db_url = "URL"; /** the database user name. */user name public static final String db_user = "user"; /** the database user

1. Foreword database applications, which are often used in many software systems, are indispensable to the development of large-scale systems. However, if the database resources are not well managed (such as: the cursor (ResultSet), Statement, Connection (Connection), etc.), it will lead directly to the stability of the system. This kind of instability factors, not only by the database or the system itself

. During the learning period, I never practiced the connection pooling on Tomcat, and today I finally realized it once, playing in Tomcat and wondering if you have the same dilemma as me now. Nonsense less say directly on the code Javapublic static Connection Getconnection_tomcat () { Connection conn = null; try { Context initctx = new In

mysql| Data | database | Database connection If you are interested in MySQL can copy this essay, if you want to configure other database types of connection pool, you can also make simple modification parameters to use. 1. Install Tomcat Refer to the Tomcat for Window Installation Wizard, the basic direct installation, note: Installation will be prompted to

Use jar Packs: Commons-dbcp-1.4.jar, Commons-pool-1.6.jar, Commons-logging-1.1.3.jar, plus JDBC driver for the database, for JAVA6 and above platforms Connection Pooling Management class Copy Code code as follows: Package cn.songxinqiang.samples.commonsdbcp.util; Import java.sql.Connection;Import Java.sql.DatabaseMetaData;Import java.sql.SQLExcept

Tomcat in the previous version of 7.0 are using COMMONS-DBCP as a connection pool, but DBCP was criticized for the reasons: DBCP is single-threaded, in order to ensure that the line Cheng Ann Plenary lock the entire connection pool dbcp poor performance dbcp too complex, more than 60 classes DBCP Using static interface

Druid in the field of connection pool can be said to be relatively fire, Alibaba open source of the JDBC connection pool, monitoring components, the following is a brief introduction to it. It consists of three parts: Druiddriver Agent driver, can provide the plug-in system

The author uses the dynamic proxy in Java to implement the database connection pool, so that users can use the connection pool with common JDBC connection habits. The database

maximum number of cache statement that a single connection in a connection pool has. The default is 0;numhelperthreads:c3p0 are asynchronous operations, and slow JDBC operations are done by helping the process. Extending these operations can effectively improve performance, and multiple operations are performed simult

You want to increase the test/validation of connections in the connection pool to prevent the database from thinking that the connection is dead and that the Web application server thinks the connection is still valid in the "Timeout problem with connector/j connection to My

);Bds.setminidle (1);Connection con = bds.getconnection ();System.out.println (con);Con.close ();con = bds.getconnection ();System.out.println (con);Con.close (); C3P0 Database Connection pool: Combopooleddatasource CDs = new Combopooleddatasource ();Cds.setdatasourcename ("Org.gjt.mm.mysql.Driver");Cds.setjdbcurl ("Jdbc:mysql:///test");Cds.setuser ("root");Cds.