hi sandor, .. thanks for your quick response. - i switched to the ojdbc5_g.jar oracle driver, - added this annotation,... | @Entity @Table(name="TableName") | @Cache(usage = CacheConcurrencyStrategy.READ_ONLY) | public class ClassNamet { | @Column(name="Name1") | private String name1; | @Column(name="Name2") | private String name2; | *** | ** | * | | @Lob | @Column(name="Col_Clob", columnDefinition="CLOB") | private Clob col_clob; | but still get the same error: | 12:55:27,831 WARN [JDBCExceptionReporter] SQL Error: 932, SQLState: 42000 | 12:55:27,831 ERROR [JDBCExceptionReporter] ORA-00932: inconsistent datatypes: expected - got CLOB | I#m also not 100% procent sure where it breaks. is it the oracle driver or is it the mapping? If u can tell me, how you solved it, that'll be perfect. thanks a lot, joern View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4162301#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...