sql developer does not start - oracle-sqldeveloper

Question

I have come across a rather weird scenario, not sure if anyone has seen it.
I have a sql developer version 3.xx installed and working properly for years until this morning.... when I tried to export a view of 300K+ records to an excel file. I then left sql developer but when I came back in, I can no longer start the application. No error but nothing happened. I went into sqldeveloper folder inside the application and started the application using cmd.com and this is the error (not sure if I am supposed to run it from command prompt though)
Microsoft Windows [Version 6.2.9200]
(c) 2012 Microsoft Corporation. All rights reserved.
C:\sqldeveloper\sqldeveloper\bin>sqldeveloper
java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.Ac
cessBridge
at java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:773)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:872)
at java.awt.Window.getToolkit(Window.java:1174)
at java.awt.Window.init(Window.java:396)
at java.awt.Window.<init>(Window.java:434)
at java.awt.Frame.<init>(Frame.java:403)
at javax.swing.JFrame.<init>(JFrame.java:202)
at oracle.ide.IdeCore$StartupWindow.<init>(IdeCore.java:1960)
at oracle.ide.IdeCore.startupImpl(IdeCore.java:1148)
at oracle.ide.Ide.startup(Ide.java:703)
at oracle.ideimpl.DefaultIdeStarter.startIde(DefaultIdeStarter.java:35)
at oracle.ideimpl.Main.start(Main.java:184)
at oracle.ideimpl.Main.main(Main.java:146)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at oracle.ide.boot.PCLMain.callMain(PCLMain.java:62)
at oracle.ide.boot.PCLMain.main(PCLMain.java:54)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at oracle.classloader.util.MainClass.invoke(MainClass.java:128)
at oracle.ide.boot.IdeLauncher.bootClassLoadersAndMain(IdeLauncher.java:
189)
at oracle.ide.boot.IdeLauncher.launchImpl(IdeLauncher.java:89)
at oracle.ide.boot.IdeLauncher.launch(IdeLauncher.java:65)
at oracle.ide.boot.IdeLauncher.main(IdeLauncher.java:54)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at oracle.ide.boot.Launcher.invokeMain(Launcher.java:713)
at oracle.ide.boot.Launcher.launchImpl(Launcher.java:115)
at oracle.ide.boot.Launcher.launch(Launcher.java:68)
at oracle.ide.boot.Launcher.main(Launcher.java:57)
Does someone have an idea of what was going on? I have tried to delete and get another copy of sqldeveloper from the Oracle site, but the situation has not improved. Is there something that I have overlooked? I believe the export did something to the application but I am not smart enough to figure out what. Your hints are highly appreciated!

Answer 1

try running the batch file to start it
It's probably in the same folder as the sqldeveloper.exe. It may be a Java level mismatch in which case you will be warned and asked if you want to proceed, or you can install a compatible version.