ORA-00265
        cannot set ARCHIVELOG mode because instance recovery is required
        
        
        Cause
        The database either crashed or was shutdown with the ABORT option. Media recovery could not be enabled because the online logs may not be sufficient to recover the current data files.
        Action
        Open the database and then enter the SHUTDOWN command with the NORMAL or IMMEDIATE option.
        
     
    
    
        ORA-00265
        instance recovery required, cannot set ARCHIVELOG mode
        
        
        Cause
        The database either crashed or was shutdown with the ABORT option. Media recovery cannot be enabled because the online logs may not be sufficient to recover the current datafiles.
        Action
        Open the database and then enter the SHUTDOWN command with the NORMAL or IMMEDIATE option.
        
     
    
    
        ORA-00265
        instance recovery required, cannot set ARCHIVELOG mode
        
        
        Cause
        The database either crashed or was shutdown with the ABORT option. Media recovery cannot be enabled because the online logs may not be sufficient to recover the current datafiles.
        Action
        Open the database and then enter the SHUTDOWN command with the NORMAL or IMMEDIATE option.