Issue upgrading from 8.3 to 8.4 to 8.5 database script run error

Dear @karena

May I know which DB are you using?

  1. Did you place the required driver file in the WEB-INF/lib folder?
  2. Also, did you place the WEB-INF/classes/sailpoint/object hbm files from the previous version?
  3. Cross-check all three DB entries present in the iiq.properties file

one more thing you could cross verify from below topic solution:
Failing to upgrade to IIQ 8.4 - #10 by MohamedSaad