How to recover data if one datafile was lost

if i have a tablespace with 5 datafiles 9i or 10g...
it's a fictional scenario :)
one was lost during db start up
and other 4 was still thre
if no backup avail for restore and no archivelog for recreating the datafile
how do i recovery data in this tablesapce ??
thanks in advance!!
br/ricky

i know it's against my own statements
just saying that i'm lazy , and don't want to write those PL/SQL to recovery the data
alright , here is the story of why i asked this :
Data source ------- Regional DB ------- Global DB----people
i'm manaing regional DB which fetchs data from it's source
and global db fetch's some key data from regional every hour
so if one datafile in regional db was broken ,
i don't really care about the data , most of them was already in global db ,
and people only views report from global db
and i can just as easy get the lost data from data source ( keeps 3 days )
so basically what i care most is let the tables back to work ASAP ,
and not those historical data , it does not matter that much , i only keep 2 weeks of them anyway
it might appear strange to many DBA that protect the data as treasure....
as a second thought , this is a somewhat silly question ;)
thanks anyway ...

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Message was edited by:
sunil kumar
Message was edited by:
sunil kumar

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Message was edited by:
sunil kumar

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Message was edited by:
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How to recover data if one datafile was lost

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