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Problem with dataset retrieving blob field from Oracle

Hello,
I've a problem retrieving a blob column from oracle.
I'm using oledbadapter to fill a dataset like that
oledataadap.fill(ds,"query");
I'm also using ColumnMapping to have more friendly column headers in
dataset.
The Fill method send an error with no explaznation except this "the type is
not managed".
Has somebody ideas about to solve that ?
Dec 8 '05 #1
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