remote query

Hi all,

	I encountered the following problem when executing the following
	query :

	SQL> select * from all_users_at_link_to_SID1;
	 	                    *
	Error at line 1:
	ORA-00922 : Missing or invalid option
	ORA-02063 : Preceding line from link_to_SID1

	Can anyone tell me what went wrong ?
	Thank you.

	Ruyi.