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Why do I see an error saying “Unable to retrieve column information. Table could not be found” while adding a relation in a CMP EJB in Workshop?

April 26, 2017column Error relation Table

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Why do I see an error saying “Unable to retrieve column information. Table could not be found” while adding a relation in a CMP EJB in Workshop?

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In version 8.1, to add a relation to a CMP EJB, please make sure that the values of the “Name” and “JNDIName” attributes of the datasource referred by the EJB are the same as in: