There seems to be a bug in the 6.0.5 upgrade process. I have a couple of machines with JIRA 6.0.2 and when I upgrade them to 6.0.5 I get the following errors in the logfile and the upgrade fails.

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JIRA 6.0.5 build: 6102 started. You can now access JIRA through your web browser.
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2013-07-23 18:11:24,942 localhost-startStop-1 INFO [atlassian.jira.upgrade.UpgradeManagerImpl] Detected that an upgrade is needed; existing data at build 6097
2013-07-23 18:11:24,944 localhost-startStop-1 INFO [atlassian.jira.upgrade.UpgradeManagerImpl] Exporting the existing data..
2013-07-23 18:11:25,851 localhost-startStop-1 ERROR [jira.bc.dataimport.DefaultExportService] Error during XML backup.
org.ofbiz.core.entity.GenericDataSourceException: SQL Exception while executing the following:SELECT ID, OLD_ISSUE_KEY, ISSUE_ID FROM moved_issue_key (Table 'jira_dbrc.moved_issue_key' doesn't exist)
at org.ofbiz.core.entity.jdbc.SQLProcessor.executeQuery(SQLProcessor.java:605)
at org.ofbiz.core.entity.GenericDAO.selectListIteratorByCondition(GenericDAO.java:1061)
at org.ofbiz.core.entity.GenericHelperDAO.findListIteratorByCondition(GenericHelperDAO.java:175)
at org.ofbiz.core.entity.GenericDelegator.findListIteratorByCondition(GenericDelegator.java:999)
at com.atlassian.jira.action.admin.export.DefaultSaxEntitiesExporter.exportEntity(DefaultSaxEntitiesExporter.java:134)
at com.atlassian.jira.action.admin.export.DefaultSaxEntitiesExporter.exportEntities(DefaultSaxEntitiesExporter.java:97)
at com.atlassian.jira.bc.dataimport.DefaultExportService.exportJIRA(DefaultExportService.java:182)
at com.atlassian.jira.bc.dataimport.DefaultExportService.export(DefaultExportService.java:76)
at com.atlassian.jira.bc.dataimport.DefaultExportService.export(DefaultExportService.java:59)
at com.atlassian.jira.bean.export.AutoExportImpl.exportData(AutoExportImpl.java:95)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeeded(UpgradeManagerImpl.java:376)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeededAndAllowed(UpgradeManagerImpl.java:333)
at com.atlassian.jira.upgrade.UpgradeLauncher.checkIfUpgradeNeeded(UpgradeLauncher.java:100)
at com.atlassian.jira.upgrade.UpgradeLauncher.start(UpgradeLauncher.java:49)
at com.atlassian.jira.startup.DefaultJiraLauncher$3.run(DefaultJiraLauncher.java:117)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrEnqueue(DatabaseConfigurationManagerImpl.java:315)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrWhenDatabaseActivated(DatabaseConfigurationManagerImpl.java:209)
at com.atlassian.jira.startup.DefaultJiraLauncher.postDbLaunch(DefaultJiraLauncher.java:105)
at com.atlassian.jira.startup.DefaultJiraLauncher.access$100(DefaultJiraLauncher.java:30)
at com.atlassian.jira.startup.DefaultJiraLauncher$1.run(DefaultJiraLauncher.java:69)
at com.atlassian.jira.util.devspeed.JiraDevSpeedTimer.run(JiraDevSpeedTimer.java:33)
at com.atlassian.jira.startup.DefaultJiraLauncher.start(DefaultJiraLauncher.java:64)
at com.atlassian.jira.startup.LauncherContextListener.contextInitialized(LauncherContextListener.java:54)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'jira_dbrc.moved_issue_key' doesn't exist
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4187)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4119)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2570)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2731)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2815)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
at org.ofbiz.core.entity.jdbc.SQLProcessor.executeQuery(SQLProcessor.java:597)
at org.ofbiz.core.entity.GenericDAO.selectListIteratorByCondition(GenericDAO.java:1061)
at org.ofbiz.core.entity.GenericHelperDAO.findListIteratorByCondition(GenericHelperDAO.java:175)
at org.ofbiz.core.entity.GenericDelegator.findListIteratorByCondition(GenericDelegator.java:999)
at com.atlassian.jira.action.admin.export.DefaultSaxEntitiesExporter.exportEntity(DefaultSaxEntitiesExporter.java:134)
at com.atlassian.jira.action.admin.export.DefaultSaxEntitiesExporter.exportEntities(DefaultSaxEntitiesExporter.java:97)
at com.atlassian.jira.bc.dataimport.DefaultExportService.exportJIRA(DefaultExportService.java:182)
at com.atlassian.jira.bc.dataimport.DefaultExportService.export(DefaultExportService.java:76)
at com.atlassian.jira.bc.dataimport.DefaultExportService.export(DefaultExportService.java:59)
at com.atlassian.jira.bean.export.AutoExportImpl.exportData(AutoExportImpl.java:95)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeeded(UpgradeManagerImpl.java:376)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeededAndAllowed(UpgradeManagerImpl.java:333)
at com.atlassian.jira.upgrade.UpgradeLauncher.checkIfUpgradeNeeded(UpgradeLauncher.java:100)
at com.atlassian.jira.upgrade.UpgradeLauncher.start(UpgradeLauncher.java:49)
at com.atlassian.jira.startup.DefaultJiraLauncher$3.run(DefaultJiraLauncher.java:117)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrEnqueue(DatabaseConfigurationManagerImpl.java:315)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrWhenDatabaseActivated(DatabaseConfigurationManagerImpl.java:209)
at com.atlassian.jira.startup.DefaultJiraLauncher.postDbLaunch(DefaultJiraLauncher.java:105)
at com.atlassian.jira.startup.DefaultJiraLauncher.access$100(DefaultJiraLauncher.java:30)
at com.atlassian.jira.startup.DefaultJiraLauncher$1.run(DefaultJiraLauncher.java:69)
at com.atlassian.jira.util.devspeed.JiraDevSpeedTimer.run(JiraDevSpeedTimer.java:33)
at com.atlassian.jira.startup.DefaultJiraLauncher.start(DefaultJiraLauncher.java:64)
at com.atlassian.jira.startup.LauncherContextListener.contextInitialized(LauncherContextListener.java:54)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
2013-07-23 18:11:25,863 localhost-startStop-1 ERROR [atlassian.jira.upgrade.UpgradeManagerImpl] Error occurred during export before upgrade: com.atlassian.core.AtlassianCoreException: Error exporting data: org.ofbiz.core.entity.GenericDataSourceException: SQL Exception while executing the following:SELECT ID, OLD_ISSUE_KEY, ISSUE_ID FROM moved_issue_key (Table 'jira_dbrc.moved_issue_key' doesn't exist). If necessary, auto-export can be disabled; see http://www.atlassian.com/software/jira/docs/latest/upgrade/autoexport.html
com.atlassian.core.AtlassianCoreException: Error exporting data: org.ofbiz.core.entity.GenericDataSourceException: SQL Exception while executing the following:SELECT ID, OLD_ISSUE_KEY, ISSUE_ID FROM moved_issue_key (Table 'jira_dbrc.moved_issue_key' doesn't exist)
at com.atlassian.jira.bean.export.AutoExportImpl.exportData(AutoExportImpl.java:109)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeeded(UpgradeManagerImpl.java:376)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeededAndAllowed(UpgradeManagerImpl.java:333)
at com.atlassian.jira.upgrade.UpgradeLauncher.checkIfUpgradeNeeded(UpgradeLauncher.java:100)
at com.atlassian.jira.upgrade.UpgradeLauncher.start(UpgradeLauncher.java:49)
at com.atlassian.jira.startup.DefaultJiraLauncher$3.run(DefaultJiraLauncher.java:117)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrEnqueue(DatabaseConfigurationManagerImpl.java:315)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrWhenDatabaseActivated(DatabaseConfigurationManagerImpl.java:209)
at com.atlassian.jira.startup.DefaultJiraLauncher.postDbLaunch(DefaultJiraLauncher.java:105)
at com.atlassian.jira.startup.DefaultJiraLauncher.access$100(DefaultJiraLauncher.java:30)
at com.atlassian.jira.startup.DefaultJiraLauncher$1.run(DefaultJiraLauncher.java:69)
at com.atlassian.jira.util.devspeed.JiraDevSpeedTimer.run(JiraDevSpeedTimer.java:33)
at com.atlassian.jira.startup.DefaultJiraLauncher.start(DefaultJiraLauncher.java:64)
at com.atlassian.jira.startup.LauncherContextListener.contextInitialized(LauncherContextListener.java:54)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
2013-07-23 18:11:39,254 Modification Check:thread-1 INFO [atlassian.jira.startup.JiraStartupLogger]

___ Modifications ___________________________

Modified Files : jira-application.properties
Removed Files : None

2013-07-23 18:11:46,738 localhost-startStop-1 INFO [ext.bamboo.service.PlanStatusUpdateServiceImpl] Job 'com.atlassian.jira.plugin.ext.bamboo.service.PlanStatusUpdateServiceImpl:job' scheduled to run every 60000ms
2013-07-23 18:11:47,278 localhost-startStop-1 INFO [atlassian.plugin.loaders.ScanningPluginLoader] No plugins found to be installed
2013-07-23 18:12:09,373 localhost-startStop-1 INFO [atlassian.plugin.manager.DefaultPluginManager] Found dependent enabled plugins for uninstalled plugin 'remotable.plugins.i18n': []. Disabling...
2013-07-23 18:12:09,377 localhost-startStop-1 INFO [atlassian.plugin.manager.DefaultPluginManager] Updating plugin 'remotable.plugins.i18n' to 'remotable.plugins.i18n'
2013-07-23 18:12:09,378 localhost-startStop-1 INFO [atlassian.plugin.manager.DefaultPluginManager] Disabling remotable.plugins.i18n
2013-07-23 18:12:09,397 localhost-startStop-1 INFO [atlassian.plugin.loaders.ScanningPluginLoader] Removed plugin remotable.plugins.i18n
2013-07-23 18:12:10,333 localhost-startStop-1 INFO [jira.whatsnew.listeners.WhatsNewUpgradeFinishedListenerImpl] Enabling show-whats-new-flag for all users
2013-07-23 18:12:10,656 localhost-startStop-1 INFO [atlassian.jira.scheduler.JiraSchedulerLauncher] JIRA Scheduler not started: Johnson events detected.
Jul 23, 2013 6:12:15 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-80"]
Jul 23, 2013 6:12:15 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 278572 ms