Strange issue on a dynamically created VO.

I am having a wierd issue with one the OAF pages. Really appreciate if you can point me to right direction. This is what I am doing.
1. Using EBS 12.1.2 Oracle Quoting
2. I am add a new VO to the seeded Page's Root AM. I am doing all this programatically in the processRequest() method of the extended controller of the seeded page. The VO xml is using positional binding.
Example:
select (select emp_name from employees where emp_id=:1) emp_name,
(select status from other_table where emp_id=:2) emp_status
from dual
Issue: When I have deploy the code on the server. Most of the time seeded page renders fine with the new info coming from the custom VO. However, sometimes I have noticed that I get error on the page. When I refresh the page couple of times, the error goes away, and does not come back. It is very wierd. The error that I get shows seeded VO query not the custom VO that I had written.
Error:
Exception Details.
oracle.apps.fnd.framework.OAException: oracle.jbo.SQLStmtException: JBO-27122: SQL error during statement preparation. Statement: SELECT * FROM (SELECT csm.ship_method_code,
csm.enabled_flag,
fl.enabled_flag lookup_Enabled_Flag,
fl.meaning
FROM wsh_carrier_ship_methods csm,
fnd_lookup_values fl
WHERE fl.lookup_type = :1 AND
fl.lookup_code = csm.ship_method_code AND
fl.view_application_id = :2 AND
nvl(fl.start_date_active, sysdate) <= sysdate AND
nvl(fl.end_date_active, sysdate) >= sysdate AND
fl.language = USERENV('LANG') AND
fl.enabled_flag = :3 AND
csm.enabled_flag = :4 AND
csm.organization_id = :5) QRSLT ORDER BY meaning
at oracle.apps.fnd.framework.OAException.wrapperException(OAException.java:912)
at oracle.apps.fnd.framework.webui.OAPageErrorHandler.prepareException(OAPageErrorHandler.java:1169)
at oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java:3241)
at oracle.apps.fnd.framework.webui.OAPageBean.renderDocument(OAPageBean.java:3036)
at OA.jspService(_OA.java:228)
at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:390)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:734)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:391)
at com.evermind.server.http.ServletRequestDispatcher.unprivileged_forward(ServletRequestDispatcher.java:280)
at com.evermind.server.http.ServletRequestDispatcher.access$100(ServletRequestDispatcher.java:68)
at com.evermind.server.http.ServletRequestDispatcher$2.oc4jRun(ServletRequestDispatcher.java:214)
at oracle.oc4j.security.OC4JSecurity.doPrivileged(OC4JSecurity.java:284)
at com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:219)
at com.evermind.server.http.EvermindPageContext.forward(EvermindPageContext.java:395)
at OA.jspService(_OA.java:221)
at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:390)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
at oracle.apps.jtf.base.session.ReleaseResFilter.doFilter(ReleaseResFilter.java:26)
at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
at oracle.apps.fnd.security.AppsServletFilter.doFilter(AppsServletFilter.java:318)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:642)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:391)
at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:908)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:458)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:313)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:199)
at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
at java.lang.Thread.run(Thread.java:619)
## Detail 0 ##
java.sql.SQLException: Missing IN or OUT parameter at index:: 1
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:199)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:263)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:271)
at oracle.jdbc.driver.OraclePreparedStatement.processCompletedBindRow(OraclePreparedStatement.java:1738)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3382)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3431)
Thanks.

I have done something very similiar to what you are doing; however, without seeing exactly what is triggering your GUI to add text to the text area's it is hard to give you an exact answer.
Just keep in mind that on all events you should be able to get the source component, which would then let you call the getName method of that component. So if a MouseEvent is the trigger for adding text you can get the name like this:
String compName = ((JComponent) mouseEvent.getSource()).getName()
(assuming you set the name of the component when you instantiated it)
(I have some subclasses that are detected at runtime via reflection, each subclass gets a JCheckBox, there can be 0 or more of these subclasses. I used the getSource/setName/getName methods to determine which checkbox was clicked on even though I don't have a named reference to each one)

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Trouble accessing a property of an instance inside a dynamically created MC.

I’m dynamically creating an instance of a movieclip, call it a game piece. This game piece has 4 frames, each with a movieclip called “base” (although one is red, one blue, one green, one yellow). When the game piece is created I set the frame to indicate player color. I’m also changing the alpha of “base” to 1.0 when it’s being dragged, 0.5 when it’s dropped.
Using the following code, everything works fine if the game piece color is set to the base in frame 1 (red). If the game piece is created and the timeline moved to a frame other than 1, I throw an error when trying to access base.alpha (this would be the second, third, and fourth instances of base in the game piece timeline). Here’s the strange part, this is only a problem when the game piece is first created and added to the display list. Once created, even after the error has been thrown, I can access the alpha of bases 2, 3, and 4 in the drag start/stop listeners. Here’s a link to the work in progress, and the relevant sections of code (shortened for brevity, t1 is the top left piece on the pallet, others just repeat the same code):
http://www.appliedcd.com/stormbringergrey/cw/CW_Combat_Sim.html
var gUnitArray:Array = new Array();
function initUnitPallet():void {
     t1.addEventListener(MouseEvent.MOUSE_DOWN,popNewUnit);
     // other pieces the same as above
     clanSelect.addEventListener(Event.CHANGE,changeClan);
function popNewUnit(e:MouseEvent):void {
     var isBase:String = e.target.name;
     var unitType:String = e.target.parent.name;
     if (isBase=="base") {
          var classRef:Class = getDefinitionByName(unitType + "master") as Class;
          var newUnit:MovieClip = new classRef();
          gUnitArray.push(newUnit);
          var newUnitIndex:uint = gUnitArray.length-1;
          this.addChild(gUnitArray[newUnitIndex]);
          gUnitArray[newUnitIndex].gotoAndPlay(clanSelect.selectedItem.data);
          // the following line is a problem if the above gotoAndPlay is anything other than frame 1
          gUnitArray[newUnitIndex].base.alpha = 1.0;
          gUnitArray[newUnitIndex].x = e.stageX;
          gUnitArray[newUnitIndex].y = e.stageY;
          gUnitArray[newUnitIndex].addEventListener(MouseEvent.MOUSE_DOWN,startUnitDrag);
          gUnitArray[newUnitIndex].addEventListener(MouseEvent.MOUSE_UP,stopUnitDrag);
          gUnitArray[newUnitIndex].startDrag();
function startUnitDrag(e:MouseEvent):void {
     e.currentTarget.base.alpha = 1.0;
     e.currentTarget.startDrag();
function stopUnitDrag(e:MouseEvent):void {
     e.currentTarget.base.alpha = 0.5;
     e.currentTarget.stopDrag();
function changeClan(e:Event):void {
     var myClanColor:String = e.target.selectedItem.data
     t1.gotoAndPlay(myClanColor);
     // other pieces the same as above

Thanks, pointed me in the right direction. I tried implementing a RENDER listener (see commented code below), and it worked, but unreliably. In my case the RENDER event fired before the entire frame was instantiated in about 1 out of 10 tries. I found a bunch of old posts (2007 or so) implying the RENDER event is buggy in Flash at best (apparently it has a better history in Flex). I couldn’t find more recent posts indicating better behavior, but I was unable to eliminate the residual errors in my project.
Fortunately, while reading I was reminded of the EXIT_FRAME event which seems to work perfectly (but forces me to player 10, not a big deal). Final code below along with proper Z-order control.
(BTW: I really miss the old forum's code box)
function initUnitPallet():void {
     t1.addEventListener(MouseEvent.MOUSE_DOWN,popNewUnit);
     clanSelect.addEventListener(Event.CHANGE,changeClan);
function changeClan(e:Event):void {
     var myClanColor:String = e.target.selectedItem.data
     t1.gotoAndPlay(myClanColor);
function popNewUnit(e:MouseEvent):void {
     var isBase:String = e.target.name;
     var unitType:String = e.currentTarget.name;
     if (isBase=="base") {
          var classRef:Class = getDefinitionByName(unitType + "master") as Class;
          var newUnit:MovieClip = new classRef();
          gUnitArray.push(newUnit);
          var newUnitIndex:uint = gUnitArray.length-1;
          this.addChild(gUnitArray[newUnitIndex]);
          gUnitArray[newUnitIndex].gotoAndPlay(clanSelect.selectedItem.data);
          gUnitArray[newUnitIndex].x = e.stageX;
          gUnitArray[newUnitIndex].y = e.stageY;
          gUnitArray[newUnitIndex].addEventListener(MouseEvent.MOUSE_DOWN,startUnitDrag);
          gUnitArray[newUnitIndex].addEventListener(MouseEvent.MOUSE_UP,stopUnitDrag);
          gUnitArray[newUnitIndex].addEventListener(Event.EXIT_FRAME,renderUnit);
          // gUnitArray[newUnitIndex].addEventListener(Event.RENDER,renderUnit);
          // stage.invalidate();
          gUnitArray[newUnitIndex].startDrag();
function renderUnit(e:Event):void {
     e.currentTarget.removeEventListener(Event.EXIT_FRAME,renderUnit);
     // e.currentTarget.removeEventListener(Event.RENDER,renderUnit);
     e.currentTarget.base.alpha = 1.0;
function startUnitDrag(e:MouseEvent):void {
     if(this.numChildren > 1){
          e.currentTarget.parent.setChildIndex(e.currentTarget,this.numChildren-1);
     e.currentTarget.base.alpha = 1.0;
     e.currentTarget.startDrag();
function stopUnitDrag(e:MouseEvent):void {
     e.currentTarget.base.alpha = 0.5;
     e.currentTarget.stopDrag();

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The following dynamically creates a set of movieclips that
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I thought about my methods this morning at breakfast.
Eventually, the list will grow to a size too big for the
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I may as well add a listener to each button created that will
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Strange issue on a dynamically created VO.

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