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We are usign dotConnect for Oracle as our provider for Entity Framework to access an Oracle database.
We are using Self-tracking entities.

When saving changes to the DB not all changed columns are included in the generated UPDATE statement. More specifically, columns which originally had a NULL-value are not included in the UPDATE.

Any tips concering the cause of this problem are appreciated.

Followup:
the problem only occurs after applying :
http://social.msdn.microsoft.com/Forums ... a598bad25e

we fixed it by applying :
http://social.msdn.microsoft.com/Forums ... 1fcb38dee4

vangstan, wgkwvl, I have sent a sample project to the e-mail addresses you have provided in your profiles.
Could you please modify the sample or create a new one that reproduces the issue and send it back to me?