ems failed after upgrade

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

After upgrading ems to version 10.1.7, it fails to start.
In the ems.log file, we see: "com.nimsoft.events.common.exception.EMSRestartException: Data Store Open Failed "

Jun 22 10:14:22:557 [main, ems] EMS - shutdownAndRestartCleanup end 
Jun 22 10:16:27:288 [main, ems] Started quartz scheduler 
Jun 22 10:16:30:968 [main, ems] ****************[ Booting ]**************** 
Jun 22 10:16:30:969 [main, ems] version 10.1.7 
Jun 22 10:16:31:124 [main, ems] Probe exception: com.nimsoft.events.common.exception.EMSRestartException: Data Store Open Failed 
 

Note: same issue has been also reported when upgrading ems to 10.24

Cause

Possible EMS DB corruption.
 

Environment

UIM 8.51, 9.02, 20.1
EMS 10.1.7 through 10.24
 

Resolution

Please do the following: 
- deactivate the ems probe 
- Delete ems db folder from the following location: <UIM_Installation>\Nimsoft\probes\service\ems\db 
- activate the ems probe. 

after you will see ems start properly.