tomcat pool

After being deployed to Tomcat, the configuration file under the src directory will be automatically copied to the application's classes directory like the class file. 1. Copy the Oracle driver jar package to the Create a WEB Project in myeclipse andOracle driver jarAdd it to the buildpath of the project.Bytes -------------------------------------------------------------------------------------------------------------------- 2. Add context under t

[JavaEE] tomcat internal connection pool, javaeetomcat Under the META-INF directory, create context. xml Obtain the data source in the program. Through jndi, this jndi must be obtained in the Servlet, and you need to configure web. xml so that the servlet can get the data source as soon as it starts. Context. xml Package com. tsh. web; import java. io. IOException; import java. SQL. connection; import java

, httpservletresponse response)throwsservletexception, IOException {//TODO auto-generated Method Stub } /** */ protected voidDoPost (HttpServletRequest request, httpservletresponse response)throwsservletexception, IOException {}/*** It will start when created*/@Override Public voidInit ()throwsservletexception {Try { //Note the Guide pack javax.naming.Context;Context context=NewInitialContext (); Context Jndi= (Context) context.lookup ("Java:comp/env")); DataSource Source

. 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 InitialContext (); Context CTX = (co

Used to write their own database connection pool, has not been garbled problem.Because I heard that the tomcat7 of the connection pool efficiency is good, want to use, the result has been garbled.Garbled production path is just a few, MySQL build library and build the table when the specified code, Eclipse Engineering Code Unified, Web page encoding, as well as connecting the database when specifying the co

Take tomcat4.1.29 as an Example 1. Copy the driver file of the database to Tomcat in the WEB-INF/lib folder under your webapp 2, start Tomcat, enter the administrator interface (Tomcat home page has a link in the upper left corner, if you do not know the password, please open the conf folder in the Tomcat file unde

In our previous articles, we have explained the first method for the problem of Tomcat and MySQL connection pools, today, we will mainly talk about the problem of Tomcat and MySQL connection pools. Another method is in $ tomcat/conf/server. Setting method:

1st Methods: Configure ConnectorMaxthreads: the maximum number of threads that Tomcat can use to process requests.Minsparethreads: the initial number of Tomcat threads, that is, the minimum number of Idle threads.Maxsparethreads: the maximum number of Idle threads in Tomcat. If it is exceeded, it will be disabled.Acceptcount: when the number of threads that can b

Recently received an urgent work, with 5 days to do a website. Due to tight time, a lot of work too late to do more fine, the main function of a hurry to finish the line. Because there is no time to do more testing, so the heart can not help but have some worry about the website system. The results of the Web site is less than half a day, the most worrying thing still happened-the system hangs, the problem is not connected. The error in the background report is: Cannot get a connection,

1. The concept of connection pooling: Jndi Interpretation: Jndi full name Java naming and directory Interface (Java naming and directory services) are used to locate the lookup service object. 2. Advantages of using connection pooling (common in enterprise development) 3. The steps to configure connection pooling in Tomcat6.0 are as follows: (1). Locate the context.xml file in the tomcat/conf directory, and add the following configuration to the

1) Start the Tomcat server, open the browser, and enter http: // localhost: 8080/admin (localhost is the name server or host) to go To the login page of the management interface, in this case, enter the user name and password required during the original installation and log on to the management interface. 2) Select Resources-Data sources to go to the Data Source configuration page. Select Data Source Actions-> Create New Data Source to go to the conf

The configuration in Tomcat, which was previously used, can be found: The autoreconnect = true argument to the URL makes sure that Mm. MySQL JDBC driver will automatically reconnect if mysqld closed The connection. mysqld by default closes idle connections after 8 hours. --> Configure your mysqld max_connections large enough to handle All of your DB connections. set to 0 for no limit. -->

1. In the conf \ Catalina \ localhost directory under the tomcat installation directory, create a file with the alias you intend to give the web application: Name: alias. xml My example is Gentoo. xml. Note that the name must be the same as the value in path. 2. Use: Context initContext = new InitialContext();Context envContext = (Context)initContext.lookup("java:/comp/env");DataSource ds = (DataSource)envContext.lookup("jdbc/gentoo");Connection c

1. Enter the Conf folder directory in the Tomcat directory, find Server.xml In Tomcat's Server.xml file, in the debug= "5" reloadable= "true" crosscontext= "true" > Com.microsoft.jdbc.sqlserver.sqlserverdriver.--> Jdbc:microsoft:sqlserver://localhost:1433;databasename=kb_rate--> Maxactive= "maxidle=" maxwait= "10000" Username= "Javauser" password= "Javadude" Driverclassname= "Com.microsoft.jdbc.sqlserver.SQLServerDriver" Url= "Jdbc:microsoft:sqlser

1. Add the configuration information in $ CATALINA_HOME/conf/server. xml (standardization is getting closer and closer) and declare the specific information of the connection pool. Add the following content:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　2. Add the following information before $ CATALINA_HOME/conf/web. xml (standardization is getting closer and closer) 　　　　　　　　　　　　　　The parameter names in 　　3. in the $ CATA

You just need to add this between CopyCode The Code is as follows: Password = "maxtie17061706" Driverclassname = "oracle. JDBC. Driver. oracledriver" Maxidle = "2" Maxwait = "5000" Username = "maxtie" Url = "JDBC: oracle: thin: @ 192.168.0.13: 1521: MMIS" Maxactive = "4"/> This is configured together with the connection pool for the default project. If you want to change the path, you just need to change the path. If only the default project is

}" /> Propertyname= "Maxidle"value= "${jdbc.pool.maxidle}" /> Propertyname= "Minidle"value= "0" /> Propertyname= "Defaultautocommit"value= "false" /> timeout after connecting Idle10 minutes, check every 1 minutes - Propertyname= "Timebetweenevictionrunsmillis"value= "60000" /> Propertyname= "Minevictableidletimemillis"value= "600000" /> Propertyname= "Testonborrow"value= "true"/> an SQL statement used to verify that a connection is v

Just add this to the Copy Code code as follows: Password= "maxtie17061706" Driverclassname= "Oracle.jdbc.driver.OracleDriver" Maxidle= "2" maxwait= "5000" Username= "Maxtie" Url= "Jdbc:oracle:thin:@192.168.0.13:1521:mmis" Maxactive= "4"/> This is the default project plus connection pool configured, if you want to not as the default project, just change path on the AH If you only match the default project:

the connection back to the connection pool, otherwise it will cause the connection is occupied complete, can not get con. Causing the server to reboot and release con Public ResultSet getresultsetdata (String sql) { ResultSet rs= null; try { Statement sta = con.createstatement (); rs = sta.executequery (sql); return rs; } catch (Exception e) { System.out.println (e.getmessage

the DataBase connection pool. DBCP is a java connection pool project on apache and a connection pool component used by tomcat. Using dbcp alone requires 3 packages: commons-dbcp.jar, commons-pool.jar, commons-collections.jar Since establishing a database connection is a very time-consuming behavior of resources, so th