If you experience a problem while configuring remote datasources, see the following information for a possible solution.
I cannot reconnect to a datasource by hostname after a DNS update
When the Java security manager is enabled, the JVM will cache name resolutions indefinitely. If the system that you are connecting to uses round-robin DNS or if the IP address of the system changes frequently, you will need to modify the following Java Security Policy properties:
networkaddress.cache.ttl: The number of seconds to cache a successful DNS lookup. Defaults to
networkaddress.cache.negative.ttl: The number of seconds to cache an unsuccessful DNS lookup. Defaults to
10. Set this value to
0to avoid caching.