about Databases, in fact I have 2 Databases one under oracle7, the second under oracle8.
My problem still mounting oracle7 database. the lost datafile is the main purpose.
Impossible to recover this datafile because I shutdowned the machine.

Impossible to log with sqlplus because the database in not mounted.

Is there any issue to log as sysdba?

I loock for an issue before using an ufsdump i did before.

thanks

NB : all databasr and listner parameters are verified and are Ok.