CreatedOn column in Entity Framework 6

Question

After upgrading to Entity Framework 6 we've implemented our own DbExecutionStrategy. In addition to existing SqlAzureExecutionStrategy our strategy also logs exceptions. As turned out, every 15-30 minutes Entity Framework throws internal SqlException System.Data.SqlClient.SqlException (0x80131904): Invalid column name 'CreatedOn'. It's an internal error. Seems like EF does some regular checks if CreatedOn column exists on some table. Is there any elegant way to prevent this exception to be thrown?

Here is a call stack:

   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)    at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)    at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, ref Boolean dataReady)    at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()    at System.Data.SqlClient.SqlDataReader.get_MetaData()    at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)    at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, ref Task task, Boolean asyncWrite, SqlDataReader ds)    at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, ref Task task, Boolean asyncWrite)    at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)    at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)    at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)    at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch(Func`1 operation, TInterceptionContext interceptionContext, Action`1 executing, Action`1 executed)    at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext)    at System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) 

Answer 1

In a past Entity Framework used to have a column "CreatedOn" in __MigrationHistory table.

Every time the AppDomain starts it checks if Migration is required the the database. EF actually tries to read "CreatedOn" columns and obviously fails with the exception which gets logged. EF has an ugly try/catch all block around this check and if the exception is thrown (column is missing) then it doesn't try to "migrate" CreatedOn column.

There is no way at the moment to disable that check, except just not to log it...