Wildcards

Is there a caracter Oracle regonizes as a character wildcard?

I am looking for results that are only 3 characters long and begin with "S". The SQL stmt might looks something like below, but I do not konw because this is not returing any results (failing).

select * from EOFGMultiGroupedNo0s1
where LOC_DESC Like 'S__' Received on Tue Sep 11 2001 - 15:06:23 CDT