DBSequence usage creating 2 rows (ADF BC)

Question

As a "newbie" with JDeveloper (10.1.3) development, I have approached my project development referencing the Oracle ADF Tutorial for Forms/4GL Developers using the same technology specified in the Tutorial (ADF Faces Components, ADF Faces HTML, JSF Core, JSF HTML).
This is a small project (a team knowledge base) that actually fit well with the Tutorial (SRDemo) example.
The problem I am encountering is 2 rows are created when using the same approach in the Tutorial with a "Create" and a "Confirm" page. The first row has the correct data entered and the second row is blank with the next sequential ID. Row ID is of type DBSequence and a database sequence is used and populated with a BEFORE INSERT TRIGGER.
So when I've created 2 new rows, the results appears as follows:
5 8/2/2006 SW Prototype Dev JD 10.1.3 WN 111111
6
7 8/2/2006 SW Database DB 10g WN 111111
8

Answer 1

Just to keep the thread in sync (because I've gone further into the hole!), I'm pasting the Stack information:
Class     Method
TrackingImpl     create
EntityImpl     callCreate
EntityDefImpl     createInstance
DBTransactionImpl     createEntityInstance
DBTransactionImpl2     createEntityInstance
IssuePublicServiceImpl     createNewIssueFromGlobals
NativeMethodAccessorImpl     invoke0
NativeMethodAccessorImpl     invoke
DelegatingMethodAccessorImpl     invoke
Method     invoke
DCInvokeMethod     invokeMethod
DCDataControl     invokeMethod
DCJboDataControl     invokeMethod
DCInvokeMethod     callMethod
JUCtrlActionBinding     doIt
DCDataControl     invokeOperation
JUCtrlActionBinding     invoke
PageLifecycleImpl     invokeActionBinding
PageLifecycleImpl     handleEvent
PageLifecycleImpl     processComponentEvents
NativeMethodAccessorImpl     invoke0
NativeMethodAccessorImpl     invoke
DelegatingMethodAccessorImpl     invoke
Method     invoke
MethodBindingImpl     invoke
FacesCtrlActionBinding     _execute
FacesCtrlActionBinding     execute
NativeMethodAccessorImpl     invoke0
NativeMethodAccessorImpl     invoke
DelegatingMethodAccessorImpl     invoke
Method     invoke
MethodBindingImpl     invoke
UIXComponentBase     __broadcast
UIXCommand     broadcast
UIViewRoot     broadcastEvents
UIViewRoot     processApplication
InvokeApplicationPhase     execute
LifecycleImpl     phase
LifecycleImpl     execute
FacesServlet     service
ResourceFilterChain     doFilter
AdfFacesFilterImpl     _invokeDoFilter
AdfFacesFilterImpl     _doFilterImpl
AdfFacesFilterImpl     doFilter
AdfFacesFilter     doFilter
EvermindFilterChain     doFilter
ADFBindingFilter     doFilter
ServletRequestDispatcher     invoke
ServletRequestDispatcher     forwardInternal
HttpRequestHandler     doProcessRequest
HttpRequestHandler     processRequest
HttpRequestHandler     serveOneRequest
HttpRequestHandler     run
HttpRequestHandler     run
ServerSocketReadHandler$SafeRunnable     run
ServerSocketAcceptHandler     procClientSocket
ServerSocketAcceptHandler     access$800
ServerSocketAcceptHandler$AcceptHandlerHorse     run
ReleasableResourcePooledExecutor$MyWorker     run
Thread     run