Full problem description:
The problem happened when we tried to send big packet by RMI IIOP call.
The application caught the exception and ignore it. But the call didn't finished at all.
This problem caused the lost of event.
The application was not crash, neither hung.
But some key events were lost due to the problem.

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 Test Case :
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Attached 4 files for test case which reproduces the problem.
 
ServerInf.java
Server.java
Util.java
Client.java

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Exception Message :
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Error_Msg.txt

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The test steps are:
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1. javac *.java
2. rmic -v1.2 -iiop -idl -classpath . Server
3. start orb server.
4. start Server by command : java -classpath . Server "orbhostname" "orbportnumber"
5. start client by command : java -classpath . Client "orbhostname" "orbportnumber"
 
After short-time, the Server will show the exceptions. Please find the Exception message details with the attached file : Error_Msg.txt
Hope it could help for investigation.