title: Performance issue on 19c
body: <p>Recently we have updated our database from 11g to 19c.</p>
  
  <p>While testing the application in new database version, we have encountered an performance issue for a particular view, which is working absolutely fine, but causing performance issue in 19c. </p>
  
  <p>While analysis the plan, we have seen there is a massive change in execution plan that's leads to very very poor performance of the view in 19c.</p>
  
  <p>Surprisingly, others views are working fine.</p>
  
  <p>It will be nice, if you can put some light on this issue.</p>
  
  <p>Thanks with Regards,
  JD</p>