Disable constraint

Hello,
I want to disable constraint of a particular schema as sys user.
I used
alter table SCOTT.LINKS disable constraint FOREIGN_LINKS_P1 ;

Its giving me error

ERROR at line 1:
ORA-00942: table or view does not exist



select OWNER,CONSTRAINT_NAME,CONSTRAINT_TYPE,TABLE_NAME,STATUS from dba_constraints where OWNER='SCOTT' and TABLE_NAME='LINKS';

OWNER                          CONSTRAINT_NAME           C   TABLE_NAME    STATUS
------------------------------ ------------------------------ -                  ---    -----------------------  --------
SCOTT                       FOREIGN_LINKS_P1                 P   LINKS              ENABLED
SCOTT                       SYS_C00109144                       C   LINKS              DISABLED
SCOTT                       SYS_C00109154                       C   LINKS              DISABLED


Please suggest solution.