???;???; Rollbacks crashing and burning

Question

Well, having an application deployed on 70 machines (W95/W98/NT4.0/W2K) is very educational.
I'm having a problem when pressing the ROLLBACK (red arrow) in NavigationBar. In the examples below, the exact same JAR was being used.
Win98/OJVM/JRE 1.3 (sticking with supported, official configuration )
I get nullPointerExceptions, funky results, and sometimes the JVM "crashes" ( I think )... the whole application just flashes and disappears.
Win98/Javasoft 1.3/JRE 1.3
Crashes and burns too frequently to be usable.
NT 4.0/Hotspot 1.3.1/JRE 1.3.1
I do EXACTLY the same operations on EXACTLY the same data... and the program behaves, I get no nullPointerExceptions, no crashes, no tracebacks! Extremely stable, acts just as one would want it to.
Yeah. grin I know... why not just deploy NT 4.0 and the 1.3.1 stuff to everyone? Uh... not officially supported, the 1.3.1 is Beta release... There's also just a JDK, no JRE that I can locate for 1.3.1.
Anyone else run into these sorts of issues and have workaround(s)?
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Answer 1

Got it using the debugger... interestingly, I also find that when I swap to my DEVELOPMENT database using exactly the same configuration, I don't get the ClassCastException... but when I point it to PRODUCTION, it gets:
System Error: java.lang.ClassCastException
System Error: void oracle.dacf.control.swing.NavigationBar.actionPerformed(java.awt.event.ActionEvent) (NavigationBar.java:1035)
System Error: void javax.swing.AbstractButton.fireActionPerformed(java.awt.event.ActionEvent) (AbstractButton.java:1450)
System Error: void javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(java.awt.event.ActionEvent) (AbstractButton.java:1504)
System Error: void javax.swing.DefaultButtonModel.fireActionPerformed(java.awt.event.ActionEvent) (DefaultButtonModel.java:378)
System Error: void javax.swing.DefaultButtonModel.setPressed(boolean) (DefaultButtonModel.java:250)
System Error: void javax.swing.plaf.basic.BasicButtonListener.mouseReleased(java.awt.event.MouseEvent) (BasicButtonListener.java:216)
System Error: void java.awt.AWTEventMulticaster.mouseReleased(java.awt.event.MouseEvent) (AWTEventMulticaster.java:230)
System Error: void java.awt.Component.processMouseEvent(java.awt.event.MouseEvent) (Component.java:3717)
System Error: void java.awt.Component.processEvent(java.awt.AWTEvent) (Component.java:3546)
System Error: void java.awt.Container.processEvent(java.awt.AWTEvent) (Container.java:1164)
System Error: void java.awt.Component.dispatchEventImpl(java.awt.AWTEvent) (Component.java:2595)
System Error: void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent) (Container.java:1213)
System Error: void java.awt.Component.dispatchEvent(java.awt.AWTEvent) (Component.java:2499)
System Error: void java.awt.LightweightDispatcher.retargetMouseEvent(java.awt.Component, int, java.awt.event.MouseEvent) (Container.java:2451)
System Error: boolean java.awt.LightweightDispatcher.processMouseEvent(java.awt.event.MouseEvent) (Container.java:2216)
System Error: boolean java.awt.LightweightDispatcher.dispatchEvent(java.awt.AWTEvent) (Container.java:2125)
System Error: void java.awt.Container.dispatchEventImpl(java.awt.AWTEvent) (Container.java:1200)
System Error: void java.awt.Window.dispatchEventImpl(java.awt.AWTEvent) (Window.java:912)
System Error: void java.awt.Component.dispatchEvent(java.awt.AWTEvent) (Component.java:2499)
System Error: void java.awt.EventQueue.dispatchEvent(java.awt.AWTEvent) (EventQueue.java:319)
System Error: boolean java.awt.EventDispatchThread.pumpOneEvent() (EventDispatchThread.java:103)
System Error: void java.awt.EventDispatchThread.pumpEvents(java.awt.Conditional) (EventDispatchThread.java:93)
System Error: void java.awt.EventDispatchThread.run() (EventDispatchThread.java:84)
System Output: Go find 6911
Handled exception breakpoint occurred at line 1674 in file [C:\Program Files\Oracle\JDeveloper 3.2\src\dacf-src.zip]\oracle\dacf\control\swing\NavigationBar.java: java.lang.ClassCastException.
I think I've posted this before, but didn't get a response. THe line pointed to is:
protected boolean isBoundToLOV(Control c)
DataItem di = (DataItem)c.getDataItem();
if ((di != null) && (di instanceof ImmediateAccess))
------THIS LINE IS POINTED TO ----->
AttributeInfo attrInfo = (AttributeInfo )di.getProperty(
DataItemProperties.INFO_OBJECT);
if (attrInfo != null)
return (( attrInfo.getLOV() != null ) ? true : false);
return false;
and the control pointed to is the combobox that was being modified and rolled back.
This is repeatable behavior when I run it against the PRODUCTION instance.
It's interesting because the PRODUCTION database was exported off the DEVELOPMENT database. I believe that the metadata is identical. I'll certainly recheck it... but the tables look identical when I DESCribe 'em. The stuff may be created in a slightly different order ( all resultsets are unordered unless explicitly sorted, so if BC4J/Wizards are expecting metadata by default in a certain order for some p eculiar reason, or the order as created, things could get interesting ) I can't imagine or see anything like that could be.
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