Tomcat6.0连接池配置

 Tomcat6.0连接池配置
  1.配置tomcat下的conf下的context.xml文件,在之间添加连接池配置:

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<Resource name="jdbc/oracle"      
       auth="Container"          
       type="javax.sql.DataSource"          
       driverClassName="oracle.jdbc.driver.OracleDriver"          
       url=" jdbc:oracle:thin:@host:port:databse"          
       username=" user "          
       password="password"          
       maxActive="100"          
       maxIdle="30"          
      maxWait="10000" />     
  <Resource name="jdbc/oracle"  
         auth="Container"      
         type="javax.sql.DataSource"      
         driverClassName="oracle.jdbc.driver.OracleDriver"      
         url=" jdbc:oracle:thin:@host:port:databse"      
         username=" user "      
         password="password"      
         maxActive="100"      
         maxIdle="30"      
        maxWait="10000" />   2.配置你的应用下的web.xml中的之间加入:

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<resource-ref>          
    <description>DB Connection</description>          
    <res-ref-name>jdbc/oracle</res-ref-name>          
    <res-type>javax.sql.DataSource</res-type>          
    <res-auth>Container</res-auth>          
  </resource-ref>    
  <resource-ref>      
      <description>DB Connection</description>      
      <res-ref-name>jdbc/oracle</res-ref-name>      
      <res-type>javax.sql.DataSource</res-type>      
      <res-auth>Container</res-auth>      
    </resource-ref>  3.把连接数据库的第三方驱动放到common/lib下面就ok了
4.测试程序我就不写了
   
Tomcat5.5x连接池配置
   
方式一、全局数据库连接池
1、通过管理界面配置连接池，或者直接在tomcat\conf\server.xml的GlobalNamingResources中增加

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<Resource name="jdbc/mydb"    
  type="javax.sql.DataSource"  
  password="mypwd"  
  driverClassName="com.microsoft.jdbc.sqlserver.SQLServerDriver"  
  maxIdle="2"  
  maxWait="5000"  
  validationQuery="select 1"  
  username="sa"  
  url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb"  
  maxActive="4"/>    
<Resource name="jdbc/mydb"
  type="javax.sql.DataSource"
  password="mypwd"
  driverClassName="com.microsoft.jdbc.sqlserver.SQLServerDriver"
  maxIdle="2"
  maxWait="5000"
  validationQuery="select 1"
  username="sa"
  url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb"
  maxActive="4"/>  2、在tomcat\webapps\myapp\META-INF\context.xml的Context中增加：

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<ResourceLink global="jdbc/mydb" name="jdbc/mydb" type="javax.sql.DataSource"/>      
<ResourceLink global="jdbc/mydb" name="jdbc/mydb" type="javax.sql.DataSource"/>    这样就可以了。
方式二、全局数据库连接池
1、同上
2、在tomcat\conf\context.xml的Context中增加：

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<ResourceLink global="jdbc/mydb" name="jdbc/mydb" type="javax.sql.DataSource"/>      
<ResourceLink global="jdbc/mydb" name="jdbc/mydb" type="javax.sql.DataSource"/>    方式三、局部数据库连接池
只需在tomcat\webapps\myapps\META-INF\context.xml的Context中增加：

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<Resource name="jdbc/mydb" type="javax.sql.DataSource" password="mypwd" driverClassName="com.microsoft.jdbc.sqlserver.SQLServerDriver" maxIdle="2" maxWait="5000" validationQuery="select 1" username="sa" url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb" maxActive="4"/>      
<Resource name="jdbc/mydb" type="javax.sql.DataSource" password="mypwd" driverClassName="com.microsoft.jdbc.sqlserver.SQLServerDriver" maxIdle="2" maxWait="5000" validationQuery="select 1" username="sa" url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb" maxActive="4"/>    参数说明：
driveClassName：JDBC驱动类的完整的名称；
maxActive：同时能够从连接池中被分配的可用实例的最大数；
maxIdle：可以同时闲置在连接池中的连接的最大数；
maxWait：最大超时时间，以毫秒计；
password：用户密码；
url：到JDBC的URL连接；
user：用户名称；
validationQuery：用来查询池中空闲的连接。
以上三种方式在tomcat 5.5.4下都可以。另外，sql server的jdbc driver是从微软网站上下载的sql server jdbc (sp3)。
   
tomcat5.0连接池配置
在tomcat 的下面路径（Tomcat \conf\Catalina\localhost）下建一个xml文件，内容如下

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<Resource name="jdbc/test" auth="Container" type="javax.sql.DataSource"/>       
    <ResourceParams name="jdbc/test">       
        <parameter>       
            <name>factory</name>       
            <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>       
        </parameter>       
        <!-- Maximum number of dB connections in pool. Make sure you       
             configure your mysqld max_connections large enough to handle       
             all of your db connections. Set to 0 for no limit.       
             -->       
        <parameter>       
            <name>maxActive</name>       
            <value>100</value>       
        </parameter>       
        <!-- Maximum number of idle dB connections to retain in pool.       
             Set to 0 for no limit.       
             -->       
        <parameter>       
            <name>maxIdle</name>       
            <value>30</value>       
        </parameter>       
        <!-- Maximum time to wait for a dB connection to become available       
             in ms, in this example 10 seconds. An Exception is thrown if      
             this timeout is exceeded.  Set to -1 to wait indefinitely.       
             -->       
        <parameter>       
            <name>maxWait</name>       
            <value>10000</value>       
        </parameter>       
        <!-- MySQL dB username and password for dB connections  -->       
        <parameter>       
            <name>username</name>       
            <value>sa</value>       
        </parameter>       
        <parameter>       
            <name>password</name>       
            <value>test</value>       
        </parameter>       
        <!-- Class name for JDBC driver -->       
        <parameter>       
            <name>driverClassName</name>       
            <value>net.sourceforge.jtds.jdbc.Driver</value>       
        </parameter>       
        <!-- Autocommit setting.  This setting is required to make       
             Hibernate work.  Or you can remove calls to commit(). -->       
        <parameter>       
            <name>defaultAutoCommit</name>       
            <value>true</value>       
        </parameter>       
        <!-- The JDBC connection url for connecting to your MySQL dB.       
             The autoReconnect=true argument to the url makes sure that the       
             mm.mysql JDBC Driver will automatically reconnect if mysqld closed the       
             connection.  mysqld by default closes idle connections after 8 hours.       
             -->       
        <parameter>       
            <name>url</name>       
            <value>jdbc:jtds:sqlserver://url/filedb;charset=gb2312;autoReconnect=true</value>       
        </parameter>       
        <!-- Recover abandoned connections -->       
        <parameter>       
            <name>removeAbandoned</name>       
            <value>true</value>       
        </parameter>       
        <!-- Set the number of seconds a dB connection has been idle        
             before it is considered abandoned.        
             -->       
        <parameter>       
            <name>removeAbandonedTimeout</name>       
            <value>60</value>       
        </parameter>       
        <!-- Log a stack trace of the code which abandoned the dB        
             connection resources.        
             -->       
        <parameter>       
            <name>logAbandoned</name>       
            <value>true</value>       
        </parameter>       
    </ResourceParams>    

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