Duplicate :
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jinfo intermittently fails with 'Connection refused' message on some UEL 6 hosts: >$JAVA_HOME/bin/java -d64 Test & >PID=$! >sleep 5 >$JAVA_HOME/bin/jinfo -J-d64 -flag PrintGC=1 $PID 9317: Connection refused Issue could be reproduced with JDK 7 FCS as well as with JCK 7u10-b12. I've attached script that could be used to reproduce issue. However it could take a lot of time to reproduce issue, but on some machines it could be reproduced quickly. See comments for more details.
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