java jdbc connection pool

Java configures the dbcp connection pool. After repeated tests, java configures the dbcp connection pool. Required jar package Java code Import

In the development of database application based on JDBC, the management of database connection is a difficult problem, because it is an important factor to decide the application performance. Based on a thorough analysis of database connection, this paper proposes and implements an efficient connection management stra

DBCP Connection Pool configuration About DBCP Connection pool The specific use of the method also need to refer to: Click to open the link dbcp jar package Commons-dbpc.jar, Commons-collections.jar, commons-pool.jar download click to downloadc3p0 Connection

built-in data source. The data source only needs to be configured on the server.steps to configure a data source:1.Copy "database connected jar" to Tomcat's lib directory2. Configure the data source XML fileA) If the configuration information is written in the context.xml of the conf directory under Tomcat , Then all apps can use this data source. b) If you are creating a context.xml in the current app's meta-inf and writing a data source, only the current app can use it. auth= "Contai

On the basis of jdbc, advanced step C3p0 connection pool (DBCP cannot read xml configuration files and has been eliminated) and use of two main classes of QueryRunner and ResultSetHandler in DBUtils, First, check the C3p0 connection pool. The biggest advantage is that the de

First, a connection, introduce the difference between the various connection pools and performance differences (BONECP newer, higher performance) connection pool difference C3P0 is an open source JDBC connection

The tools you needCommons-pool2-2.3.jar: Dependency libraries for connection pooling implementationsCommons-dbcp2-2.0.1.jar: Implementation of connection poolingC3p0-0.9.2.1.jarIf you use C3p0 to appear Method ' initializationerror ' not found,opening the test class, addMchange-commons-java-0.2.3.4.jar BagThe JDBC driv

, then we re-add the connection to the list, If not, then we will execute the corresponding method on the real connection.It is also important to note that the connection object that is now called createconnection () is not the original connection object, but instead invokes a proxy class that is dynamically generated by the bind () method on the Myconnectionhand

The code has been playing for months.Hibernatetemplate hibernatetemplate = Gethibernatetemplate ();Sessionfactory sessionfactory = Hibernatetemplate.getsessionfactory ();Session session = Sessionfactory.opensession ();Query query = session.createsqlquery (HQL). addentity (Arguments.class);listif (List.size () >0)return list;This section of code is used by hibernate original eco-SQL. Then this method is called several times later. will let the connection