Couldn't extract columns - InvalidCastException

I have an existing database which was generated by DataObjects, in the last couple days something must have been changed because we are getting the following error(domainbuildlog) when DataObjects is trying to build the domain:

[Waiting for parallel schema extraction completion] 0,313: Exception: DataObjects.NET.Exceptions.DatabaseModelExtractorException: Couldn't extract columns. Inner exception: System.InvalidCastException: Object cannot be cast from DBNull to other types. ---> System.InvalidCastException: Object cannot be cast from DBNull to other types. at System.DBNull.System.IConvertible.ToInt32(IFormatProvider provider) at System.Convert.ToInt32(Object value) at DataObjects.NET.Database.Drivers.Oracle.OracleExtractor.BuildColumnLookupCache() --- End of inner exception stack trace ---


       Server stack trace: 
          at DataObjects.NET.Database.Drivers.Oracle.OracleExtractor.BuildColumnLookupCache()
          at DataObjects.NET.Database.Drivers.Oracle.OracleExtractor.GetAllColumns(String table)
          at DataObjects.NET.DatabaseModel.Extractors.DatabaseModelExtractor.ExtractModel(DomainUpdateMode updateMode)
          at DataObjects.NET.Domain.ExtractDatabase(DomainBuildContext context, DomainUpdateMode updateMode)
          at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
          at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(RuntimeMethodHandle md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
          at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)

       Exception rethrown at [0]: 
          at System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(Message reqMsg, Boolean bProxyCase)
          at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(Object NotUsed, MessageData& msgData)
          at DataObjects.NET.Domain.BuildActionDelegate.EndInvoke(IAsyncResult result)
          at DataObjects.NET.Domain.Build(DomainUpdateMode updateMode)

I assume there is some data in the database which is not valid, but I have no idea where to look. Is there a way to find out on which data & databasetable DataObjects is failing?

All columntypes in the database should be correct, I compared them to a newly generated database.

We are using an older version of DataObjects.net (3.8.9).

dataobjects.net domain.build

asked Jan 17 '13 at 03:50

Xta
5●1●1●2

edited Jan 17 '13 at 03:52

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Asked: Jan 17 '13 at 03:50

Seen: 2,544 times

Last updated: Jan 17 '13 at 03:52

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