TOMCAT 5.0 - JNDI Connection Fails

Question

Hey guys,!
Just wanted to test a JNDI datasource I created through the Tomcat administrator with a simple code in a Servlet, here's the snipped code:
               System.out.println("Starting initial context");
               Context initCtx = new InitialContext();
               Context envCtx = (Context) initCtx.lookup("java:comp/env");
               DataSource ds = (DataSource)
               envCtx.lookup("jdbc/OFI4");
               Connection conn = ds.getConnection();
               //... use this connection to access the database ...
               conn.close();
The thing is, I'm getting an error that I've google for the las couple of days and have not found any helpful answers about it, the error message is:
org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
     at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:780)
     at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:540)
     at test2.doGet(test2.java:68)
Caused by: java.sql.SQLException: No suitable driver
     at java.sql.DriverManager.getDriver(DriverManager.java:243)
     at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:773)
thank u people, any hel will be greatly appreciated.!
Regards,
Esteban

Answer 1

Hey guys....!
I figured out the way to make the JNDI connection work and I can tell you, it DOES work. Apparently, there are some troubles when creating the JNDI datasource by using the Tomcat Administration tool.
Follow this steps to sort this issue out:
1. Delete any of the datasources u've created by using the Tomcat Administrator make sure that no tags regarding these datasources remains in the server.xml file
2. Include the Resource tag in your application web.xml, as follows:
     <resource-ref>
     <description>DB Connection</description>
<res-ref-name>jdbc/OFICDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
     </resource-ref>
3. Create a xml file named exact as your application (i.e app1, testApp...) and place it at CATALINAHOME/conf/Catalina/localhost. The document content must be as the following (please note that you must change values such as database name, username, password). This files is associated to an application called testCR3
<?xml version='1.0' encoding='utf-8'?>
<Context path="/testCR3" docBase="testCR3" debug="5" reloadable="true" crossContext="true" workDir="work\Catalina\localhost\testCR3">>
<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_textCR3_log." suffix=".txt" timestamp="true"/>
<Resource name="jdbc/OFICDB" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/OFICDB">
<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:@12.145.12.134:1521:OFICDB</value>
</parameter>
<parameter>
<name>username</name>
<value>user1value>
</parameter>
<parameter>
<name>password</name>
<value>pwd1</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>10</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>-1</value>
</parameter>
</ResourceParams>
</Context>
If u have any additional troubles, do not hesitate to let me know.
Best regards,
E10
Message was edited by:
E10