File locking does not work in Fedora core 2

I am using jdk 1.4.2_07 on Fedora core 2. I need to detect file locks obtained by other programs on the same system. However I can not detect locks held by other programs even when they are exclusive write locks. Any help is appreciated. I am using java.nio.channels tryLock method.
Thanks,
Dave

Hi jbroughton,
There are few things that I need to know in order to investigate why your file is no longer being recognised:
What version of LabVIEW are you using?
What is your kernal version of federa four?
Is your application a built executable?
What is your librarying doing currently when you try to call it? If any error popups what are the error codes and messages you are getting?
Can you call your C library outside of LabVIEW?
Thanks
Emma R
NIUK & Ireland

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Hi jbroughton,
There are few things that I need to know in order to investigate why your file is no longer being recognised:
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