Problem writing external file to externally mounted disk in Windows

Folks,
I've got a puzzling problem with a simple OWB mapping where I'm dumping the contents of a table to an external file.
Versions are OWB v 11.2.0.2 64-bits on Oracle RDBMS 11.2.0.2 Windows 2007 64-bits Enterprise Server.
When the external files module is hooked up to a location that points to a local disk and directory on the OWB-server, everything works fine - files are created and written.
When the external files module is hooked up to a location that points to a mounted disk on another Windows 2007 64-bits Enterprise Server, I get +"Invalid Path for target file, check if connector is deployed correctly".+
The "File System Location Path" in OWB is set to "N:" (no slashes either way). "Test Connection" reports OK.
I've given both the Oracle os-user and "Everyone" (for good measure) all rights on the mounted disk, and I can see that the generated package code is using the correct Directory, and the Directory Path is the correct one on the server. The mounted disk (N:) should appear as a local disk to Oracle as far as I can see. I'm able to create and delete files on the disk using command line on the OWB/DB-server.
I'm scratching my head on this one....

then mapped that share as a network drive (N:) on server A (the OWB/DB-server)I think that problem was with different accounts used for run Oracle database (usually database instance run under SYSTEM account) and which you used to map share (it was interactive session). Even when you made this map persistent (enable "Reconnect at logon" option during mapping) you don't grant access to this drive to other accounts (including SYSTEM ) - this drive will not be visible to other users.
I think it is possible to create "persistent" network drive mapping for Oracle database context with specification non-SYSTEM account (domain or server local) for running Oracle database instance (and Oracle Listener service).
Also it seems there is a workaround to access mapped network drive under SYSTEM account:
http://stackoverflow.com/questions/182750/how-to-map-a-network-drive-to-be-used-by-a-service
Regards,
Oleg

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sgfilter_writetofile.doc ‏314 KB

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     at org.apache.xml.utils.TreeWalker.startNode(TreeWalker.java:387)
     at org.apache.xml.utils.TreeWalker.traverse(TreeWalker.java:202)
     at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:343)
Thinking it is because of classpath, I placed xalan 2.5, xerces 1.4.4 jar files in jrun admin lib directory and in server lib directory as well. Still getting the same error.
Any suggestion?
Thanks in advance

xalan is included in JRun 4. However JRun 3 does not.
However I tried with the same code in JRun3 in different system. The error is completely different. I understand this is because of different version of files. trying to solve ;)
Here my new exception
javax.servlet.ServletException: org/w3c/dom/ranges/DocumentRange
java.lang.NoClassDefFoundError: org/w3c/dom/ranges/DocumentRange
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:493)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
     at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:493)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
     at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
     at org.apache.xerces.jaxp.DocumentBuilderImpl.(Unknown Source)
     at org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source)
     at com.cybell.appl.deliveryorder.cmd.CreateXMLDOFile.createFile(CreateXMLDOFile.java:73)
     at com.cybell.appl.deliveryorder.cmd.CreateXMLDOFile.execute(CreateXMLDOFile.java:36)
     at com.cybell.appl.framework.cmd.BaseCommand.start(BaseCommand.java:50)
     at com.cybell.appl.framework.control.BaseController.service(BaseController.java:38)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
     at allaire.jrun.servlet.JRunSE.service(../servlet/JRunSE.java:1013)
     at allaire.jrun.servlet.JRunSE.runServlet(../servlet/JRunSE.java:925)
     at allaire.jrun.servlet.JRunNamedDispatcher.forward(../servlet/JRunNamedDispatcher.java:34)
     at allaire.jrun.servlet.Invoker.service(../servlet/Invoker.java:84)
     at allaire.jrun.servlet.JRunSE.service(../servlet/JRunSE.java:1013)
     at allaire.jrun.servlet.JRunSE.runServlet(../servlet/JRunSE.java:925)
     at allaire.jrun.servlet.JRunRequestDispatcher.forward(../servlet/JRunRequestDispatcher.java:88)
     at allaire.jrun.servlet.JRunSE.service(../servlet/JRunSE.java:1131)
     at allaire.jrun.servlet.JvmContext.dispatch(../servlet/JvmContext.java:330)
     at allaire.jrun.http.WebEndpoint.run(../http/WebEndpoint.java:107)
     at allaire.jrun.ThreadPool.run(../ThreadPool.java:272)
     at allaire.jrun.WorkerThread.run(../WorkerThread.java:75)

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