Database mounted. ORA-01113: file 1 needs media recovery

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Recovering a database without a media backup is highly challenging, as rebuilding system data files is not feasible. The consensus emphasizes the critical importance of maintaining regular backups to prevent data loss. Without a backup, recovery options are severely limited, and users are encouraged to implement a robust backup strategy. The discussion highlights a lack of Oracle users in the forum, indicating a potential gap in shared knowledge or resources specific to Oracle database recovery. For further insights, a link to a relevant forum thread is provided for additional assistance.
Valdimarsson
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The only way to recover is from media backup? I know I cannot "rebuild" system datafile, but if I don't have a backup - I know shame on me! - Is there anyway to recover database?
 
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Hopefully you didn't lose too much. Backups are important. I don't know how else you would recover.
 
What database?
 
Thread 'Is this public key encryption?'
I've tried to intuit public key encryption but never quite managed. But this seems to wrap it up in a bow. This seems to be a very elegant way of transmitting a message publicly that only the sender and receiver can decipher. Is this how PKE works? No, it cant be. In the above case, the requester knows the target's "secret" key - because they have his ID, and therefore knows his birthdate.
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