Upgrade Advisor has detected that the AUTO_UPDATE_STATISTICS database SET option is OFF. As a result, database statistics ...

Upgrade Advisor has detected that the AUTO_UPDATE_STATISTICS database SET option is OFF. As a result, database statistics are not being updated as part of the upgrade to SQL Server 2012. Relying on statistics from a previous version of SQL Server may result in query plans that are suboptimal. By setting AUTO_UPDATE_STATISTICS to ON, all statistics are updated when they are first referenced. Updating statistics increases the likelihood that more optimal query plans are selected when executing queries.