title: Oracle database error 12514: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
body: <p>Now I am using Tableau business intelligence tool for data visualization,i tried to connect Oracle database with tableau,at that time i got below Error'</p>
  
  <pre><code> Unable to connect to the server. Check that the server is running and that 
   you have access privileges to the requested database.
  
   Oracle database error 12514: ORA-12514: TNS:listener does not currently 
    know of service requested in connect descriptor
  
   Unable to connect to the Oracle server "192.176.10.145". Check that the 
   server is running and that you have access privileges to the requested 
  database.
  </code></pre>
  
  <p>in what mistake i did,kindly help me out ,give any suggestion to resolve this</p>