ems failed after upgrade to v 10.17

Document ID : KB000103137
Last Modified Date : 22/06/2018
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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 
UIM 8.51
EMS 10.1.7
Possible EMS DB corruption.
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.