hmm, you have an interesting problem!
first thing I'd say is use this opportunity to upgrade to the
ojdbc14.jar, which is the latest oracle jdbc driver and allows lots of
nice enhancements.
second, I'm assuming that since the error is a servlet exception, that
there's some servlet code manually handling a database connection (no
comment *cough* *cough*) that it gets from a JNDI lookup?
third, try changing the <ResourceParams> tag to a plain <Resource> tag,
this is the Resource tag that I use in my app (and it works). caveat: I
declare this in /META-INF/context.xml inside the <context> tag.
<Resource name="jdbc/my_USERDS" auth="Container"
type="javax.sql.DataSource"
maxActive="0"
maxIdle="10"
maxWait="500"
username="db_user"
password="db_pass"
driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@server:1521:ORA_SID"/>
can you try this and let us know how it goes?
cheers!
[EMAIL PROTECTED] wrote:
I'm upgrading from tomcat 4.1.24 to tomcat 5.5.12 on WinXP. I have three applications that are deployed from this
server, two of which work fine with tomcat 5.5.12, however the third which uses an oracle 9i database gives me the
following error "javax.servlet.ServletException: Cannot create JDBC driver of class '' for connect URL 'null' ".
Basically I've included the same details form the Tomcat4 server.xml file into the tomcat 5.5 server.xml, rediting
where necessary.
Things I have tried..
Placing the context into fragment files located either inside the applications META-INF folder or under
tomcat\conf\Catalina\localhost. Neither of these seemd to work for me as Tomcat could not find the apps, so I've
left the context back in server.xml.
Rewriting the Resource params <parameter> as elements
i.e.factory="com.ora.jsp.sql.DataSourceFactory"
Checked changed location of the JDBC jar file. classes12.jar catalina_home\common\lib\ AND
catalina_home\webapps\[appname]\WEB-INF\lib
Checked changed the server.xml service-name and engine name to match previous
TC4 server.xml version.
Added a Resourcelink element to the context - this is not present on the TC4
version
Checked Tomcat logs.
I think that Tomcat is not able to read the <ResourceParams> element, which is why the URL and driverClass are
NULL.
Which When I checked the Tomcat log files shows ...
16-Aug-2007 09:25:46 org.apache.catalina.core.ApplicationContext log
SEVERE: action: Cannot create JDBC driver of class '' for connect URL 'null'
Background info
Using Apache 2.0 with mod_JK to serve pages on port 80
Java version 1.5
**** server.xml ****
<!-- Tomcat 5.5 Example Server Configuration File -->
<Server port="8005" shutdown="SHUTDOWN" debug="0">
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"
debug="0"/>
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"
debug="0"/>
<!-- Global JNDI resources -->
<GlobalNamingResources>
<!-- Test entry for demonstration purposes -->
<Environment name="simpleValue" type="java.lang.Integer" value="30"/>
<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" ></Resource>
</GlobalNamingResources>
<Service name="Catalina">
<Connector port="8009"
enableLookups="true" redirectPort="8443" protocol="AJP/1.3" />
<Engine name="Catalina" defaultHost="opp-online" debug="0">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
<Host name="opportunities-online" debug="0" appBase="webapps" >
<Context path="/staff" docBase="oponline/staff" cookies="true"
reloadable="true">
<Valve className="org.apache.catalina.valves.AccessLogValve"
directory="logs" prefix="staff_access_log." suffix=".txt"
pattern="combined" resolveHosts="false"/>
<Logger className="org.apache.catalina.logger.FileLogger" prefix="oponline_log." suffix=".txt"
timestamp="true"/>
<ResourceParams name="jdbc/oponline"
factory="com.ora.jsp.sql.DataSourceFactory"
user="myuser"
password="mypassword"
dataSourceClassName="oracle.jdbc.pool.OracleConnectionCacheImpl"
URL="jdbc:oracle:thin:@sas-test.myserver.ac.uk:1521:MYTE"
maxLimit="5" />
<!-- global resource for application's context. -->
<!-- <ResourceLink name="/jdbc/oponline" global="/jdbc/oponline"
type="org.apache.catalina.UserDatabase"/> -->
</Context>
</Host>
</Engine>
</Service>
</Server>
*** end server.xml ***
*** App web.xml except ***
<resource-ref>
<description>
JNDI DataSource for [appname] database.
(From Oreilly "JavaServer Pages", Bergsten, 2nd Ed., page 485)
</description>
<res-ref-name>jdbc/oponline</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
*** end web.xml ***
Thanks
Ian
--
Matthew Kerle
IT Consultant
Canberra, Australia
Mobile: +61404 096 863
Email : [EMAIL PROTECTED]
Web : http://threebrightlights.blogspot.com/
---------------------------------------------------------------------
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
