Upgrade to 9.02 fails: Failed to stop monitors running in the UIM Server

Products

• DX Infrastructure Management
• NIMSOFT PROBES

Issue/Introduction

Due to an upgrade of UIM 8.5.1 server to UIM v9.0.2, we saw the following errors:

"Failed to stop monitors running in the UIM Server instance."

Cause

- service_host probe was red
- upgrade was actually completed

Environment

- UIM 8.51 upgrade to 9.0.2
- hub 7.96
- Database: Oracle 122c
- RHEL Linux 6

Resolution

- service_host was red post-install
- Deactivated service_host as it is deprecated now in UIM v9.0.2 and replaced by wasp
- Rt-click deleted the service_host probe
- rm -rf service_host 
- probeDiscovery queue was not processing
- Emptied the queue, added some more memory for the discovery_server and then the queue successfully processed and continued processing. 
- Checked hub and controller and other probes and everything checked out fine.