IBM RRC (Rational Requirements Composer) Freezes and Hangs

Previous week an analyst told us that IBM RRC hangs does not response to user. After this i started to investigate the problem. In the text below you will see step by step hang analysis on RRC hangs.
1. Enable JMX connections to dump threads.
In the picture below you’ll see where you have to put this parameters.
Dcom.sun.management.jmxremote.port=9999 -Dcom.sun.management.jmxremote.authenticate=false  -Dcom.sun.management.jmxremote.ssl=false

2. Connect via JConsole
3. Investigate threads
4. In our case the problem is related with StreamWriter. so we just put these parameters to get rid of encoding problem.
Duser.language=en -