Originally posted by ovidius
SQL> startup mount pfile='d:\dafne\admin\pfile\initdafne.ora';
LRM-00111: no closing quote for value 'D:\dafne\a'
ORA-01078: failure in processing system parameters

It did not like it...
Replace log_archive_dest="d:\dafne\redo_arch\"

with log_archive_dest="d:\dafne\redo_arch"

The slash is probably the problem.