How to use Java.sql.Connection.setNetworkTimeout?

Question

I ran into the exact issue that setNetworkTimeout is supposed to solve according to Oracle. A query got stuck in socket.read() for several minutes.

But I have little

Answer 1

As far as Postgres JDBC driver is concerned (postgresql-42.2.2.jar), the setNetworkTimeout implementation does not make use of the Executor parameter. It simply sets the specified timeout as the underlying socket's timeout using the Socket.setSoTimeout method.

It looks like the java.sql.Connection interface is trying not to make any assumptions about the implementation and provides for an executor that may be used if the implementation needs it.