CMP tutorial bean fails startup "Error creating CMP persister"

[Dave Smith]

I can't configure websphere application server 4.0 to use a Microsoft SQL
server database for EJB container managed persistence. To test my
configuration, I'm attempting to run the CMP tutorial bean included with
infocenter using a merant sequelink data source. However, the CMP bean fails
to startup when websphere server is started. The default_server_stdout.log
file records this error message:

[01.09.17 04:06:15:238 PDT] 56586baf JDBCPersister W CNTR0031W: Error
starting CMP bean:
CmpApp#cmp11.jar#com_ibm_websphere_gettingstarted_ejbs_SimpleContainerManage
d
[01.09.17 04:06:15:268 PDT] 56586baf JDBCPersister W CNTR0032W: Error
creating CMP persister using datasource: local:jdbc/jdbc/GsDataSource
[01.09.17 04:06:15:278 PDT] 56586baf EJBEngine X WSVR0062E: Failed to
start EJB,
CmpApp#cmp11.jar#com_ibm_websphere_gettingstarted_ejbs_SimpleContainerManage
d:
com.ibm.websphere.gettingstarted.ejbs.EJSJDBCPersisterCMPSimpleContainerMana
gedBean

The Websphere documentation claims to support SQL server connectivity via
Merant Sequelink 5.1. I've installed and configured the Merant software, and
I can successfully connect to the database instance using the Merant
SequeLink java client. Here are the settings for the data source from the
websphere administrative web console:

Database Name: //magellan:19996;databaseName=SAMPLEDB
Default User: SAMPLEDB
Default Password: SAMPLEDB

The properties for the datasource are correct, port is 19996, and server
name is 'magellan'

I can't find any good documentation about how to configure a sql server
datasource. What can I be doing wrong?

Thanks,
Dave

Configuration:
WebSphere Application Server, Advanced Single Server Edition V4.0
Microsoft SQL Server V7.0 SP3
Merant Sequelink for Java v5.1
Windows 2000 Professional