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Global Connection Pooling

Posted on 2004-04-14
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Last Modified: 2011-10-03
I have Tomcat 5.0.19 running with more than 100 virtual hosts.  I want to create a single global JNDI JDBC pool (mysql) for all of these websites.  According to Tomcat Documentation, I have to put the following code between the <Context ...> </Context> tags.  This works fine for a single web application.  However, that's not what I want, because all of our 100 virtual hosts basically need the same DB connection.  I think I need to place this configuration in the <GlobalNamingResources> section.  However it doesn't work like that.  Here is configuration I'm referring to:

<Resource name="jdbc/myDB" auth="Container" type="javax.sql.DataSource" />
                  <ResourceParams name="jdbc/myDB">
                        <parameter>
                              <name>factory</name>
                              <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
                        </parameter>
                        <parameter>
                              <name>maxActive</name>
                              <value>100</value>
                        </parameter>
                        <parameter>
                              <name>maxIdle</name>
                              <value>30</value>
                        </parameter>
                        <parameter>
                              <name>maxWait</name>
                              <value>10000</value>
                        </parameter>
                        <parameter>
                              <name>removeAbandoned</name>
                              <value>true</value>
                        </parameter>                  
                        <parameter>
                              <name>removeAbandonedTimeout</name>
                              <value>60</value>
                        </parameter>
                        <parameter>
                              <name>logAbandoned</name>
                              <value>true</value>
                        </parameter>
                        <parameter>
                              <name>username</name>
                              <value>xxx</value>
                        </parameter>
                        <parameter>
                              <name>password</name>
                              <value>xxx</value>
                        </parameter>
                        <parameter>
                              <name>driverClassName</name>
                              <value>com.mysql.jdbc.Driver</value>
                        </parameter>
                        <parameter>
                              <name>url</name>
                              <value>jdbc:mysql://localhost:3306/mydb?autoReconnect=true</value>
                        </parameter>
                  </ResourceParams>

Is there a way to accomplish this?

Thanks,

Asim
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Question by:asimalp
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LVL 9

Expert Comment

by:vzilka
ID: 10846750
Define it in the GlobalNamingResource section, and add resourcelink tags in your host/app.
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/manager-howto.html
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Author Comment

by:asimalp
ID: 10849301
Could you please give an example of adding resourcelink tags?
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Accepted Solution

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vzilka earned 2000 total points
ID: 10853892
<?xml version='1.0' encoding='utf-8'?>
<Server>
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
<GlobalNamingResources>
<Environment name="simpleValue" type="java.lang.Integer" value="30"/>
<Resource auth="Container" description="User database that can be updated and saved" name="UserDatabase" type="org.apache.catalina.UserDatabase"/>
<Resource name="jdbc/ItcDS" type="oracle.jdbc.pool.OracleConnectionPoolDataSource" auth="Container"/>
<ResourceParams name="UserDatabase">
<parameter>
<name>factory</name>
<value> org.apache.catalina.users.MemoryUserDatabaseFactory
</value>
</parameter>
<parameter>
<name>pathname</name>
<value>conf/tomcat-users.xml</value>
</parameter>

</ResourceParams>

<ResourceParams name="jdbc/ItcDS">

<parameter>
<name>factory</name>
<value> org.apache.commons.dbcp.BasicDataSourceFactory
</value>
</parameter>

<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>

<parameter>
<name>url</name>
<value>*******</value>
</parameter>

<parameter>
<name>username</name>
<value>cape_admin</value>
</parameter>

<parameter>
<name>password</name>
< value>admin</value>
</parameter>

<parameter>
<name>maxWait</name>
<value>5000</value>
</parameter>

<parameter>
<name>maxActive</name>

<value>4</value>
</parameter>

<parameter>
<name> maxIdle </name>
<value>2</value>
</parameter>

</ResourceParams>

</GlobalNamingResources>

<Service name="Catalina">

<Connector acceptCount="100" connectionTimeout="20000" disableUploadTimeout="true" port="8080" redirectPort="8443">
</Connector>

<Connector port="8009" protocol="AJP/1.3" protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler" redirectPort="8443">
</Connector>

<Engine defaultHost="localhost" name="Catalina">

<Host appBase="webapps" name="localhost">

<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_log." suffix=".txt" timestamp="true"/>

<Context path="/anketa_new" docBase="/anketa_new" debug="0" privileged="true" useNaming="true">

<ResourceLink global="jdbc\ItcDS" name="ItcDS"/>

</Context>
</Host>
<Logger className="org.apache.catalina.logger.FileLogger" prefix="catalina_log." suffix=".txt" timestamp="true"/>

<Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>

</Engine>
</Service>
</Server>
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Author Comment

by:asimalp
ID: 10928869
Thank you very  much!
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