unable to create UserTransaction from EJBContext, getting IllegalStateException

[ronak rayy]

@Stateless(name = "DBQueryService", mappedName = "DBQueryService")
@TransactionManagement(TransactionManagementType.BEAN)
public class DBQueryServiceImpl implements IDBQueryService {

	@Resource
	private EJBContext context;

        @Override
	public boolean createRole(String userId) throws Exception {
		boolean created = false;
		UserTransaction utx = context.getUserTransaction();
		try {

			utx.begin();
			
                                JDBC operations.....................

			utx.commit();

			created = true;
		} catch (Exception e) {
			utx.rollback();
		}
		return created;
	}
}

The above code is giving me the below error (server used is Websphere)

[28/09/16 10:04:53:121 BST] 000000d9 BusinessExcep E   CNTR0020E: EJB threw an unexpected (non-declared) exception during invocation of method "createRole" on bean "BeanId(XXX#XXXEJB.jar#DBQueryService, null)". Exception data: java.lang.IllegalStateException
at com.ibm.ejs.container.CMStatelessBeanO.getUserTransaction(CMStatelessBeanO.java:80)
at com.xxx.services.impl.DBQueryServiceImpl.createRole(Unknown Source)
at com.xxx.services.interfaces.EJSRemote0SLDBQueryService_eefe5a3e.createRole(EJSRemote0SLDBQueryService_eefe5a3e.java)
at com.xxx.services.interfaces._IDBQueryService_Stub.createRole(_IDBQueryService_Stub.java:1)

[ronak rayy]

ronak rayy wrote:

@Stateless(name = "DBQueryService", mappedName = "DBQueryService")
@TransactionManagement(TransactionManagementType.BEAN)
public class DBQueryServiceImpl implements IDBQueryService {

	@Resource
	private EJBContext context;

        @Override
	public boolean createRole(String userId) throws Exception {
		boolean created = false;
		UserTransaction utx = context.getUserTransaction();
		try {

			utx.begin();
			
                                JDBC operations.....................

			utx.commit();

			created = true;
		} catch (Exception e) {
			utx.rollback();
		}
		return created;
	}
}

The above code is giving me the below error (server used is Websphere)

[28/09/16 10:04:53:121 BST] 000000d9 BusinessExcep E   CNTR0020E: EJB threw an unexpected (non-declared) exception during invocation of method "createRole" on bean "BeanId(XXX#XXXEJB.jar#DBQueryService, null)". Exception data: java.lang.IllegalStateException
at com.ibm.ejs.container.CMStatelessBeanO.getUserTransaction(CMStatelessBeanO.java:80)
at com.xxx.services.impl.DBQueryServiceImpl.createRole(Unknown Source)
at com.xxx.services.interfaces.EJSRemote0SLDBQueryService_eefe5a3e.createRole(EJSRemote0SLDBQueryService_eefe5a3e.java)
at com.xxx.services.interfaces._IDBQueryService_Stub.createRole(_IDBQueryService_Stub.java:1)

We managed to sort this ourselves...
The issue was with one of the configuration settings on Websphere.

Enterprise Applications >> XXX > modules >> metadata for modules  .................................. need to uncheck all the modules.
error was occurring when all the modules were checked.