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I'm trying to determine the best way to ping a database via JDBC. By 'best' I mean fast and low overhead. For example, I've considered executing this:
"SELECT 1 FROM DUAL"
but I believe the DUAL table is Oracle-specific, and I need something more generic.
Note that Connection has an isClosed() method, but the javadoc states that this cannot be used to test the validity of the connection.