The error message is not saying anything about space problem. It says files to be archived manually which has already been set in control files.
So comment the above parameter, mount the database and then disable the archivelog as below.
svrmgrl>startup mount;
svrmgrl>alter database noarchivelog;
svrmgrl>alter database open;

Thanks,
Bhaskar

[Edited by Bhaskara on 01-17-2001 at 11:48 AM]