Issue
When opening a view on Tableau Server, users see a blank screen where the view would be. The rest of the UI might still load.The status screen shows that the Vizql server is down, even if the tabadmin status shows it is running.
In the Vizql logs, you might see some of the following errors:
GenericJDBCException: Could not open connection
OR
2016-08-18 02:14:15.799 -0400 (,,,) localhost-startStop-1 : ERROR wgsessionId= com.tableausoftware.domain.licensing.ServerLicenseHelper - Could not access core licensing database after 10 retries
java.lang.RuntimeException: Workgroup database connection error
OR
Failed to instantiate [com.tableausoftware.domain.user.service.UserService]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/apache/http/HttpRequest
2016-08-18 02:12:28.348 -0400 (,,,) Properties File Watcher : INFO wgsessionId= com.tableausoftware.core.configuration.FileWatcherAppImpl - Stopped by exception
java.nio.file.ClosedWatchServiceException
OR
2016-08-18 02:12:28.644 -0400 (,,,) Properties File Watcher : INFO wgsessionId= com.tableausoftware.core.configuration.FileWatcherAppImpl - Stopped by exception
java.nio.file.ClosedWatchServiceException
OR
2016-08-18 02:12:28.723 -0400 (,,,) localhost-startStop-1 : ERROR wgsessionId= org.springframework.web.context.ContextLoader - Context initialization failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'commandController' defined in URL [