HP OpenVMS Systems

Java and RMS File Sharing?

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The Question is:

 
I have written a sample program in Java which first tried to open a
 RandomAccessFile in "rw" mode and then tries to open it in "r" mode without
 closing the earlier. This leads to a FileNotFoundException while opening in
 "r" mode.
Is there any restriction on VMS for opening files.
I also observed that opening file in read mode multiple times has no problem
 but opening in "rw" after "r" also gives filenotfoundexception.
What is the reason for this and whats the solution.
 
Thanks
Bhuvan
 
 

The Answer is :

 
  Java V1.4.0 does not particularly support file-write sharing on
  OpenVMS.
 
  For details on file sharing, please see the JAVA$FILE_OPEN_MODE
  logical name and the associated information in the OpenVMS Java
  release notes and particularly in the C run-time (RTL) library
  documentation.
 
  For details on RMS file access and file access sharing (as used
  from C), please see the OpenVMS FAQ.
 

  

     

     
answer written or last revised on ( 30-DEC-2002 )
     
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