1776332 - Introscope Enterprise Manager doesn't start: "Unable to open the Perst backing store"

The Introscope Enterprise Manager doesn't start because of the following error, which can be found in file EM Installation>/logs/IntroscopeEnterpriseManager.log:

9/06/17 11:57:45.472 AM COT [WARN] [WrapperSimpleAppMain] [Manager.AppMapAgentService] [Application Triage Map feature is disabled. Please verify if introscope.apm.feature.enabled property is set to false by mistake in properties file.]
9/06/17 11:57:45.714 AM COT [INFO] [WrapperSimpleAppMain] [Manager.TransactionTracer] Storage directory configured to C:\usr\sap\CCMS\apmintroscope\traces
9/06/17 11:57:45.714 AM COT [INFO] [WrapperSimpleAppMain] [Manager.TransactionTracer] Configured introscope.enterprisemanager.transactionevents.storage.queue.limit to 1000
9/06/17 11:57:46.337 AM COT [ERROR] [WrapperSimpleAppMain] [Manager] Trace data detected an unrecoverable problem in the opening process. Enterprise Manager will be shutdown. Unable to open the Perst backing store:C:\usr\sap\CCMS\apmintroscope\traces\traces_20170811.db
9/06/17 11:57:46.337 AM COT [ERROR] [WrapperSimpleAppMain] [Manager] The EM failed to start. Trace data cannot be opened due to an error in opening the file:C:\usr\sap\CCMS\apmintroscope\traces\traces_20170811.db
9/06/17 11:57:46.350 AM COT [INFO] [WrapperSimpleAppMain] [Manager] Shutting down data persistence subsystem
9/06/17 11:57:46.352 AM COT [INFO] [WrapperSimpleAppMain] [Manager] Shutting down the Isengard server
9/06/17 11:57:46.372 AM COT [INFO] [WrapperSimpleAppMain] [Manager] Orderly shutdown complete.

• Introscope Enterprise Manager 9.x.

KBA , SV-SMG-DIA-WLY , Solution Manager / Introscope Integration , Problem