Persistence unit is inconsistent

Question

Hi all,
I have a problem with my primary key generation, my class looks as follows:
@Entity
@Table(name="MYAPP_M_CUST")
public class Customer implements Serializable {
     @Id
     @Column(name="CUST_ID")
     @GeneratedValue (strategy=GenerationType.TABLE, generator="myGen")
     @TableGenerator(name = "myGen", table = "MY_GENERATOR_TABLE")
     private int custId;
when i try to persist a new "Customer" via the entity manager i get a
Caused by: com.sap.engine.lib.injection.InjectionException: Injection on field em of instance com.mycompany.myapp.CustServiceBean@1daef87 failed. Could not get a value to be injected from the factory.
     at com.sap.engine.lib.injection.FieldInjector.inject(FieldInjector.java:115)
     at com.sap.engine.lib.injection.InjectionMatrix.inject(InjectionMatrix.java:45)
     at com.sap.engine.services.ejb3.runtime.impl.Interceptors_DependencyInjection.invoke(Interceptors_DependencyInjection.java:22)
     ... 101 more
Caused by: java.lang.RuntimeException: The persistence unit is inconsistent with the database schema:
Error on attribute >>com.mycompany.myapp.Customer.custId<<: The generator table >>MY_GENERATOR_TABLE<< does not exist.
which makes me wonder because i created the "MY_GENERATOR_TABLE" table with the following definition:
CREATE TABLE "SAPNDWDB"."MY_GENERATOR_TABLE"
     "GEN_KEY"  Varchar (256) UNICODE  NOT NULL,
     "GEN_VALUE"  Integer,
     PRIMARY KEY("GEN_KEY")
and I can see it via the SQL Studio.
Without the key generation the persist works fine and writes data to the table.
Any ideas?
Regards,
    Christian

Answer 1

Hi Christian,
Are you running your app on the System DataSource? If so, you have to create all tables using the Java Dictionary. You find more information [here|http://help.sap.com/saphelp_nwce10/helpdata/en/45/c8baeb5f0c2e97e10000000a155369/frameset.htm].
HTH!
\-- Vladimir