On upgrade to Confluence 6.1, an error 'The database name component of the object qualifier must be the name of the current database' occurs

2017-03-29 23:28:01,077 ERROR [localhost-startStop-1] [engine.jdbc.spi.SqlExceptionHelper] logExceptions The database name component of the object qualifier must be the name of the current database.
2017-03-29 23:28:01,105 ERROR [localhost-startStop-1] [atlassian.confluence.plugin.PluginFrameworkContextListener] launchUpgrades Upgrade failed, application will not start: com.atlassian.config.ConfigurationException: Cannot update schema
com.atlassian.confluence.upgrade.UpgradeException: com.atlassian.config.ConfigurationException: Cannot update schema
	at com.atlassian.confluence.upgrade.AbstractUpgradeManager.upgrade(AbstractUpgradeManager.java:133)
	at com.atlassian.confluence.plugin.PluginFrameworkContextListener.launchUpgrades(PluginFrameworkContextListener.java:118)
	at com.atlassian.confluence.plugin.PluginFrameworkContextListener.contextInitialized(PluginFrameworkContextListener.java:77)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4853)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: com.atlassian.config.ConfigurationException: Cannot update schema
	at bucket.core.persistence.hibernate.schema.SchemaHelper.validateSchemaUpdateIfNeeded(SchemaHelper.java:174)
	at com.atlassian.confluence.upgrade.AbstractUpgradeManager.upgrade(AbstractUpgradeManager.java:119)
	... 11 more
Caused by: org.hibernate.exception.GenericJDBCException: Error accessing table metadata
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:97)
	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.convertSQLException(InformationExtractorJdbcDatabaseMetaDataImpl.java:97)
	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.locateTableInNamespace(InformationExtractorJdbcDatabaseMetaDataImpl.java:352)
	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.getTable(InformationExtractorJdbcDatabaseMetaDataImpl.java:239)
	at org.hibernate.tool.schema.internal.exec.ImprovedDatabaseInformationImpl.getTableInformation(ImprovedDatabaseInformationImpl.java:110)
	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.performMigration(SchemaMigratorImpl.java:251)
	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:136)
	at com.atlassian.confluence.impl.hibernate.ConfluenceHibernateSchemaManagementTool$3.doMigration(ConfluenceHibernateSchemaManagementTool.java:105)
	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:109)
	at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:87)
	at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:58)
	at bucket.core.persistence.hibernate.schema.SchemaHelper.validateSchemaUpdateIfNeeded(SchemaHelper.java:171)
	... 12 more
Caused by: java.sql.SQLException: The database name component of the object qualifier must be the name of the current database.
	at net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic(SQLDiagnostic.java:372)
	at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(TdsCore.java:2988)
	at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2421)
	at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(TdsCore.java:677)
	at net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:505)
	at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:1032)
	at net.sourceforge.jtds.jdbc.JtdsDatabaseMetaData.getTables(JtdsDatabaseMetaData.java:1836)
	at org.hibernate.tool.schema.extract.internal.InformationExtractorJdbcDatabaseMetaDataImpl.locateTableInNamespace(InformationExtractorJdbcDatabaseMetaDataImpl.java:337)
	... 21 more