[jboss-user] [EJB3] - Re: EntityManager.find returns null.

Wolfgang Knauf [http://community.jboss.org/people/WolfgangKnauf] created the discussion "Re: EntityManager.find returns null." To view the discussion, visit: http://community.jboss.org/message/605839#605839 -------------------------------------------------------------- Hi, you might fill your "ID" with spaces before putting it in "find" ;-). Do you have control over the oracle, or is it a predefined schema? If you can control it: a) did you declare a type-mapping in your "....-ds.xml",  e.g. something like this?       <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) -->       <metadata>          <type-mapping>Oracle9i</type-mapping>       </metadata> In "\server\default\conf\standardjbosscmp-jdbc.xml, the java type "String" is mapped to "VARCHAR(255)" for "Oracle9i". b) in "persistence.xml", you can set a property "hibernate.dialect": http://docs.jboss.org/hibernate/core/3.3/reference/en/html/session-config... http://docs.jboss.org/hibernate/core/3.3/reference/en/html/session-config... Hope this helps Wolfgang -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/605839#605839] Start a new discussion in EJB3 at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]