iirc you will enter "user/password@hoststring as sysdba" , all toghether, in the first login´s screen line, but PLEASE, don´t do it : SYS is special, SYS is magic, it is so super-powerful, so easy to drop some internal thing and trash a database, you run a VERY HIGH risk doing things in the db as SYS... PLEASE use another user, even one with DBA role if you wish (SYSTEM, maybe), but FORGET SYS to do mundane task like it.... Better safe than sorry...

Regards,

Chiappa