Error after update: Plz help

Question

I am facing a really strange problem and I have been banging my head against the wall for the past couple of days. I do not understand how no one else faced this error before. So quite possibly it must be my fault somehow. But heres the problem description
I first do an insert into the oracle 9i database using ODP.NET -- this works correctly
Immediately afterwards I do an read of the same row that I just inserted
Immediately afterwards I do an update. The update always fails in the scenario no matter which row I am updating. All these operations are on the same table though.
The update works just fine when there is no insert immediately preceding it.
The error message that I get is:
"Dynamic SQL generation failed. No key information found"
But this does not make any sense due to:
a) The database has the key info in it
b) This scenario works when I use the Microsofts driver for oracle
c) Inserts, updates work independently. They dont work only when I call an update immediately after an insert.
DO u think there is so row locking thing going on here??
But the error message is completely different.
thanks for any help on this.

Answer 1

well
I finally figured out the cause of the error. I am not sure if this is a bug with ODP.NET or not but like I said above this problem only occurs when I use ODP.NET and not the driver provided by microsoft for oracle. The solution is to call fillschema before update, insert, delete into the database. The fillschema also fills in the primarykey information into the dataset. apparently I had assumed incorrectly that fill would do it, but dosent seem like it. So in order to use oraclecommandbuilder one needs to use fillschema too.