title: Migration from Windows Oracle 12c to Linux Oracle 18c
body: <p><a href="https://i.stack.imgur.com/scvYA.jpg" rel="nofollow noreferrer">enter image description here</a>We are migrating Oracle DB from 12c Windows Oracle to 18c Linux Oracle installation. Some of the columns (derived columns) in views has become unicode and not usable by downstream SSIS. Any reason why these views are giving error in SSIS? SSIS is complaining that in 18c columns have become unicode</p>
  <p>12c View definition is
  <a href="https://i.stack.imgur.com/Ui1W9.png" rel="nofollow noreferrer">enter image description here</a></p>
  <p>18 c View defintion</p>
  <p><a href="https://i.stack.imgur.com/S2D1w.png" rel="nofollow noreferrer">enter image description here</a></p>