tomcat connection pool monitoring

user disconnects (the 11th to 20th connection), The connection will not be released immediately, but it will need to wait 10000 milliseconds (the maximum wait time) before it is released and 10 connections remain in the connection pool when no user is connected. In development, the

MySql database connection pool 1. Traditional links (as shown below) Note: (1). the traditional method of finding DriverManager to connect is limited. (2). the traditional method of close () does not reuse the Connection, but only cut off the bridge between the application and the database, that is, no SQL command is sent to the database for execution. (3) In th

(Turn around, source address: http://www.jmatrix.org/notes/1067.html)Recently, I wondered if it was possible to continuously collect the performance information of the Tomcat server itself by adding a tomcat extension, such as the data of the thread pool, the number of requests, and so on, so as to be able to coordinate with the

-pre1.jar, Mchange-commons-0.2.jar, if you are working with an Oracle database, you also need to import C3p0-oracle-thin-extras-0.9.2-pre1.jar2, in the class directory to add c3p0 configuration file: C3p0-config.xml The configuration information for the C3p0-config.xml is as follows: 3. Create a pool in a static code block for a tool class (such as Jdbcutils) that gets a database connection Addition

Label:DBCP (database connection pool), DB connection pool. is a Java Connection pool project on Apache and a connection pool component used

the popup window with the connection information--OK650) this.width=650; "Src=" https://s1.51cto.com/wyfs02/M00/A2/78/wKioL1mf7KLB99viAADIPT6-AkI267.jpg-wh_500x0-wm_ 3-wmp_4-s_1336561194.jpg "title=" 87.jpg "alt=" Wkiol1mf7klb99viaadipt6-aki267.jpg-wh_50 "/>650) this.width=650; "Src=" https://s4.51cto.com/wyfs02/M00/03/C8/wKiom1mf7czTo1dTAADn3he54T4836.jpg-wh_500x0-wm_ 3-wmp_4-s_1926640504.jpg "title=" 90.jpg "alt=" Wkiom1mf7czto1dtaadn3he54t4836.jpg

() init_count) Pool.addlast (connection); Else{ Try{connection.close (); } Catch(SQLException e) {Throw NewRuntimeException (e); } Curr_count--; } } }2.DBCP Connection Pool ComponentsDBCP is an open source connection pool implementation under the Apache Soft

) Implement the Getconnection method, let the Getconnection method each call, from LinkedList to take a connection back to the user.(3) When the user finishes using connection and calls the Connection.close () method, the collection object should ensure that it returns itself to the LinkedList instead of returning the conn to the database.(4) Collection guarantee to return to the LinkedList is the difficult

1. Traditional links (below) Attention: (1). The traditional way to find DriverManager to connect, the number is limited. (2). The traditional way of close (), and did not reuse connection, just cut off the application and Database bridge, that is no send to SQL command to the database side execution (3). In the project, for connection not to say, do not use the DriverManager directly, and u

1. Connection Pooling Overview(1) Use the pool to manage the connection so that the connection can be reused;(2) There is a pool, so we do not have to create connection ourselves, but through the