title: SQL Developer: connection to 12c db resets after each query
body: <p>I recently started using SQL Developer to access data from 11g and 12c databases. Every time I connect to a 12c database and execute a query I get a notification that the connection has been reset. Most of the time, data is still returned, other times there is also a broken pipe error. I am seeing this issue using Windows 10 with SQL Developer version 18.1 and High Sierra MacOS with SQL Developer version 17.2.0.188.</p>
  <p>There doesn't seem to be any issues connecting to the databases with Python and cx_oracle.</p>
  <p><img src="https://i.stack.imgur.com/Q1iyH.png" alt="Error Screenshot" /></p>
  <p>Any ideas what could be causing this issue or where to find logs to get more information?</p>