No matter how I try it, trying to use a Tomcat (5.0) container-provided data source (vs. Hibernate provided one) doesn't work for me. Here's the current state:

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Feb 4, 2004 9:46:25 PM net.sf.hibernate.util.JDBCExceptionReporter logExceptions
WARNING: SQL Error: 0, SQLState: null
Feb 4, 2004 9:46:25 PM net.sf.hibernate.util.JDBCExceptionReporter logExceptions
SEVERE: Cannot create JDBC driver of class '' for connect URL 'null'
Feb 4, 2004 9:46:25 PM net.sf.hibernate.JDBCException <init>
SEVERE: Cannot open connection
org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null', cause:
java.sql.SQLException: No suitable driver
at java.sql.DriverManager.getDriver(Unknown Source)
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:743)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:518)
at net.sf.hibernate.connection.DatasourceConnectionProvider.getConnection(DatasourceConnectionProvider.java:59)
at net.sf.hibernate.impl.BatcherImpl.openConnection(BatcherImpl.java:257)
at net.sf.hibernate.impl.SessionImpl.connect(SessionImpl.java:3157)
at net.sf.hibernate.impl.SessionImpl.connection(SessionImpl.java:3140)
at net.sf.hibernate.impl.BatcherImpl.prepareQueryStatement(BatcherImpl.java:61)
at net.sf.hibernate.loader.Loader.prepareQueryStatement(Loader.java:703)
at net.sf.hibernate.loader.Loader.doQuery(Loader.java:184)
at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:132)
at net.sf.hibernate.loader.Loader.doList(Loader.java:949)
at net.sf.hibernate.loader.Loader.list(Loader.java:940)
at net.sf.hibernate.hql.QueryTranslator.list(QueryTranslator.java:833)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1475)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1454)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1446)
at com.publishworks.merchandise.DataSource.fetchAll(DataSource.java:26)
...

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Has anyone seen this? I have the server.xml configure properly, I believe. Also refer to the resource in the web.xml. The postgres.jar is in Tomcats common/lib folder. Any clues?

Thanks.

Try to get a JDBC connection from Tomcats JNDI manually, without Hibernate. If it doesn't work, check the Tomcat mailinglists or FAQ or ...