Non Archivelog Database- Undo Data files Deleted-How to Open Database ??

I am doing some test in Lab server.
Unforunately Undo Tablespace datafiles are deleted from the server.
Database is running in No archivelog Mode and I don't have any any type of Backup.
Last one week, i was doing only read only work with database. So Not really concern how much i will loose.
The biggest worry is How can I open the database with existing datafiles ????
Regards ,
Sumit
Edited by: Sumit2 on Aug 27, 2009 12:57 PM

If any active transaction or data needed by any of the session for rollback then it will be difficult to recover those transaction and your database data will be in inconsistent state. As you were doing only read only activity you can safely recover the database.
just comment undo tablespace and undomanagement parameters init.ora file and restart the database.
Once database is up create new undo tablespace and assigning it as default undo tablesapce tablespace.

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    Handle:      misterimran
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    Total Posts:      1,109
    Total Questions:      130 (115 unresolved)
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