WSAD with oracle, not able to retrieve meta data

[Bondu Sam]

hi
i am using WSAD4.0.3 and oracle 8.1.7.
i am using CMP entity beans in my application and i have some custom finder methods defined in my home interface.
The mapping of the beans to the tables in oracle happens with no problem using top dowm approach.
But when i try to generate deploy code i get error ----> "cant get metadata for column TestName"
TestName is one of the fields in a table.
The same works fine for db2 database.
plss help