title: Im getting a "Oracle Partial Multibyte Character" error while Extraction on TABLEAU
body: <p>I have connected Tableau to an Oracle database. I have two custom SQL on Tableau with an Inner join. The live extract works alrite but when I try to get an extract from Tableau I am getting the following error: 
  "Oracle Database error 29275:ORA-29275: Partial Multibyte Character"
  Please help me.</p>