I did double-check the driver jars - they are there. Here's some more info: I deployed the app successfully using the same db backup & ear file as on my dev box. I double checked that all the server jars in \lib & server\default\lib are the same as the jars on our working dev boxes. I added a new servlet to the ear that retrieved a db connection (using the same JNDI name & datasource that our ejbs use), queried the db (using plain jdbc) and printed out the result. This worked fine so this proves our database/datasource/jdbc drivers are setup properly. On startup, our app retrieves a db record using a local cmp, called from a remote session bean. The error occurs when the cmp is called so we suspect the error is related to a descriptor or the entity container.
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