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Use this command-line option to enable and disable network queries from being used to determine the host name and IP address for RAS (reliability, availability, and serviceability) troubleshooting purposes.


Setting Effect Default
-XX:+ReadIPInfoForRAS Enable yes
-XX:-ReadIPInfoForRAS Disable

Eclipse OpenJ9™ captures the host name and IP address by default, for use in diagnosing problems. But if a nameserver cannot be contacted when a network query is made, the program will wait until the resolver times out.

You can avoid this situation by using the -XX:-ReadIPInfoForRAS command-line option to prevent the query from being performed.