Tomcat6.0連接池配置
? 1.配置tomcat下的conf下的context.xml文件,在之間添加連接池配置:
1.??? <Resource name="jdbc/oracle"
2.??? ?????? auth="Container"??
3.??? ?????? type="javax.sql.DataSource"??
4.??? ?????? driverClassName="oracle.jdbc.driver.OracleDriver "??
5.??? ?????? url=" jdbc:oracle:thin:@host:port:databse"??
6.??? ?????? username=" user "??
7.??? ?????? password="password"??
8.??? ?????? maxActive="100"??
9.??? ?????? maxIdle="30"??
10.??? ?????? maxWait="10000" />??
2.配置你的應用下的web.xml中的之間加入:
1.??? <resource-ref>??
2.??? ??? <description>DB Connection</description>??
3.??? ??? <res-ref-name>jdbc/oracle</res-ref-name>??
4.??? ??? <res-type>javax.sql.DataSource</res-type>??
5.??? ??? <res-auth>Container</res-auth>??
6.??? ? </resource-ref>??
3.把連接數據庫的第三方驅動放到common/lib下面就ok了
4.測試程序我就不寫了

Tomcat5.5x連接池配置

方式一、全局數據庫連接池
1、通過管理界面配置連接池，或者直接在tomcat\conf\server.xml的GlobalNamingResources中增加
<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：
<ResourceLink global="jdbc/mydb" name="jdbc/mydb" type="javax.sql.DataSource"/>
這樣就可以了。
方式二、全局數據庫連接池
1、同上
2、在tomcat\conf\context.xml的Context中增加：
<ResourceLink global="jdbc/mydb" name="jdbc/mydb" type="javax.sql.DataSource"/>
方式三、局部數據庫連接池
只需在tomcat\webapps\myapps\META-INF\context.xml的Context中增加：
<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"/>
參數說明：
driveClassName：JDBC驅動類的完整的名稱；
maxActive：同時能夠從連接池中被分配的可用實例的最大數；
maxIdle：可以同時閑置在連接池中的連接的最大數；
maxWait：最大超時時間，以毫秒計；
password：用戶密碼；
url：到JDBC的URL連接；
user：用戶名稱；
validationQuery：用來查詢池中空閑的連接。
以上三種方式在tomcat 5.5.4下都可以。另外，sql server的jdbc driver是從微軟網站上下載的sql server jdbc (sp3)。

tomcat5.0連接池配置
在tomcat 的下面路徑（Tomcat \conf\Catalina\localhost）下建一個xml文件，內容如下
?<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>

tomcat中的幾種連接池配置代碼