Tarek Fathy

1- open the file  opmn.xml  located in application server home/midtier/opmn/conf and edit it as follow Go to the process-type tag with id="OC4J_BI_FORMS" module-id="OC4J". Under this process-type tag, go to the category tag with the id="urlping-parameters". Replace the line with: Then, under the line add:   2- edit the file  rwnetwork.conf located in reports/conf comment the first line multicast channel="228.5.6.7 ... and un comment the second line namingService name="Cos" example      

Exception creating EntityManagerFactory This error in jdeveloper occurs when you build your ejb module on views not table the problem is that the @id annotation is not added to the code generated by jdeveloper. In addition to that , the java.sel.Timestamp is used insted of java.util.Date. moreover that, the wizard that generates the code does not generate  @Temporal annotation. To solve this problem, do the following: Do  not  use Java fields of type  java.sql.Date !  java.util.Date  or  java.util.Calendar  instead. add annotation @id before primary key column add annotation  @Temporal before every Date attribute