I see one strange issue, sys not able to drop database link from different owner.. i wonder if am misssing something or is it a problem with oracle?

Code:
CST7QST_ITF> show user
USER is "SYS"
CST7QST_ITF> alter session set current_schema = FIMT_AUDIT_TST;

Session altered.

Elapsed: 00:00:01.11
CST7QST_ITF> drop database link IMQ09ITF;
drop database link IMQ09ITF
                   *
ERROR at line 1:
ORA-01031: insufficient privileges


Elapsed: 00:00:01.41
CST7QST_ITF>


Rgds
Abhay.