Connectionpooling in tomcat 5.5

[nagendraveera pilla]

Hi,
All
plese give me solution to this problem. since last two days i did't get any solution about this issue. I searched all forums .But no use, I did't get any solution this problem

I have problem with tomcat 5.5 connection pooling concepts, It give errors like this
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource.
I put mysql connector jar file in my tomcat commom/lib dirctory .But it stil l give error like this.

I think problem is only in my server.xml file .But i configured correctly .it is my server. xml file

<Context path="/soap" docBase="C:\web_services\soap-2_2\webapps\soap"
debug="1" reloadable="true">
</Context>


<Context path="/DBTest" docBase="DBTest"
debug="5" reloadable="true" crossContext="true">

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

<Resource name="jdbc/TestDB"
auth="Container"
type="javax.sql.DataSource"/>

<ResourceParams name="jdbc/TestDB">
<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>root</value>
</parameter>
<parameter>
<name>password</name>
<value>root</value>
</parameter>

<!-- Class name for mm.mysql JDBC driver -->
<parameter>
<name>driverClassName</name>
<value>org.gjt.mm.mysql.Driver</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:mysql://localhost:3306/griffin?autoReconnect=true</value>
</parameter>
</ResourceParams>
</Context>





please give me a solution to this one. It make me a great help.


thanks
NagendraKumar