Tomcat / Oracle

Question

No matter what I do I cannot get my application connected to an Oracle database.
I've tried classes12.jar in all the possible locations, added it to %CLASSPATH%, taken it off %CLASSPATH%, removed the javax.sql classes but nothing will work.
The error message isn't exactly telling me much either.     
<!-- Class name for JDBC driver -->
     <parameter>
     <name>driverClassName</name>
     <value>oracle.jdbc.driver.OracleDriver</value>
     </parameter>
     <!-- The JDBC connection url for connecting to your DB -->
     <parameter>
     <name>url</name>
     <value>jdbc:oracle:[email protected]:1521:luht</value>
     </parameter>
LOG FILE.
Bootstrap: Create Catalina server
Bootstrap: Starting service
Starting service Tomcat-Standalone
Apache Tomcat/4.1.27-LE-jdk14
Bootstrap: Service started
org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'oracle.jdbc.driver.OracleDriver', cause: oracle.jdbc.driver.OracleDriver

Answer 1

For what it's worth, my problem was that I had the context defined incorrectly in my server.xml. As such, the datasource manager was not finding my datasource and was throwing the error described above.
Explicitly, the problem was that I was deploying as a WAR file that was NOT being expanded. My context was missing the leading forward slash from the path name.
I decided to post my solution because it took me several hours to figure it out and nobody else seemed to propose that what I was experiencing could have been caused by Tomcat not finding the datasource.
Anyway, here is a snippet of my working server.xml file. I hope this helps somebody else.
Craig
      <!-- Define the default virtual host -->
      <Host name="localhost" debug="0" appBase="webapps"
       unpackWARs="false" autoDeploy="true">
        <Logger className="org.apache.catalina.logger.FileLogger"
                 directory="logs"  prefix="localhost." suffix=".log"
             timestamp="true"/>
        <Context path="" docBase="ROOT" debug="0" reloadable="true"/>
        <!-- Note the leading '/' here in the path. -->
        <Context path="/myapp" docBase="myapp.war" debug="0" reloadable="true">
          <Resource name="jdbc/MyDataSource" auth="Container" type="javax.sql.DataSource"/>
          <ResourceParams name="jdbc/MyDataSource">
            <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>jdbc:oracle:thin:@server:1521:database</value>
            </parameter>
            <parameter>
              <name>username</name>
              <value>username</value>
            </parameter>
            <parameter>
              <name>password</name>
              <value>password</value>
            </parameter>
            <parameter>
              <name>maxActive</name>
              <value>15</value>
            </parameter>
            <parameter>
              <name>maxIdle</name>
              <value>10</value>
            </parameter>
            <parameter>
              <name>maxWait</name>
              <value>-1</value>
            </parameter>
            <parameter>
              <name>validationQuery</name>
              <value>select 'TEST' from dual</value>
            </parameter>
          </ResourceParams>
        </Context>
      </Host>