Error message: snapshot too old: rollback segment number( very urgent)

Hi everybody,
I have a question regarding an oracle error message <b>snapshot too old: rollback segment number</b>.
I get this message when I run a SQL script in Oracle server. To be clear, I wrote the SQL script to extract the data from SAP R3 via Oracle server.
Could somebody please help me with this issue? It's very urgent.
The SQL statement which I use at this moment is:
set undo_management auto
set undo_retention
Please help me with this issue.
Thanks in advance.
Regards,
Esrat

it´s very uncommon to have an Oracle version higher than the client versions of the tools.
I suggest:
- Check the note mentioned now several times
- upgrade to a supported newer Oracle release
Markus

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    http://asktom.oracle.com/pls/ask/f?p=4950:8:802460143396322798::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:275215756923
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