3244159 - UME service startup fails - Hashes not converted: Write lock not received after 10 attempts

The SAP AS Java startup fails with an exception during upgrade:

Service [com.sap.security.core.ume.service] failed to start; Reason: [Error in execution of service's start method]; nested exception is: 
[EXCEPTION]
com.sap.engine.frame.ServiceException: Start of UME service failed. Check help topic "Start of UME Service Failed". Technical details: Hashes not converted: Write lock not received after 10 attempts
 at com.sap.security.core.server.ume.service.UMEServiceFrame.start(UMEServiceFrame.java:463)
 at com.sap.engine.frame.ApplicationFrameAdaptor.start(ApplicationFrameAdaptor.java:31)
 at com.sap.engine.core.service630.container.ServiceRunner.startFrame(ServiceRunner.java:165)
 at com.sap.engine.core.service630.container.ServiceRunner.startService(ServiceRunner.java:118)
 at com.sap.engine.core.service630.container.ServiceRunner.run(ServiceRunner.java:65)
 at com.sap.engine.frame.core.thread.Task.run(Task.java:73)
 at com.sap.engine.core.thread.impl5.SingleThread.execute(SingleThread.java:178)
 at com.sap.engine.core.thread.impl5.SingleThread.run(SingleThread.java:316)
Caused by: com.sap.security.core.persistence.datasource.PersistenceException: Hashes not converted: Write lock not received after 10 attempts
 at com.sap.security.core.util.imp.HashConverter.convertHashes(HashConverter.java:206)
 at com.sap.security.core.server.ume.service.UMEServiceFrame.start(UMEServiceFrame.java:449)
 ... 7 more
Caused by: com.sap.security.core.persistence.datasource.PersistenceException: Write lock not received after 10 attempts
 at com.sap.security.core.util.imp.HashConverter.convertHashes(HashConverter.java:163)
 ... 8 more

SAP AS Java NetWeaver 7.5

KBA , BC-JAS-SEC-UME , User Management Engine , Bug Filed