title: Connection to Oracle database is very slow, 20-30 seconds to open
body: <p>When opening our VB application and it's pointing to an Oracle database, it takes 20-30 seconds for it to open. Oracle 11.2 is installed on a local server and I'm launching the application on a client, on the same domain.</p>
  
  <p>I suspect it's an Oracle connection issue (maybe something to do with listener or tns), as when we open the application and it's pointing to a SQL database, it opens immediately.</p>
  
  <p>I tried the below settings for the listner but it didn't help. </p>
  
  <p>SQLNET.AUTHENTICATION_SERVICES= (NONE) 
  NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)</p>
  
  <p>Any ideas as to why it takes so long, or what I can try to get it to connect and open quicker?</p>
  
  <p>Thanks</p>