Load DWH intermittent error on domain updates "Object has been closed."

Products

• Clarity PPM SaaS
• Clarity PPM On Premise

Issue/Introduction

Load Data Warehouse - Full and Incremental fail with the following error message:
 
Error occurred while processing domain attributes.
SQL error code: 0
Error message: [CA Clarity][Oracle JDBC Driver]Object has been closed.
Executed:
select status_report_key from dwh_inv_status_report_ln
Error:
Data warehouse is not up to date. DWH meta column status_report_key is not in DWH table dwh_inv_status_report_ln hence quiting from domain updates
 
This would be on domain updates, the ETL part will run just fine and successful.
One time it will work, next time it would fail, so it is intermittent.
 
You have run restore domains command but still have the issue and it started after a server patch
 

Environment

Release: Any 

Resolution

Reboot the entire server box after applying a server patch