SQL & PL/SQL :: Output After Passing Parameter

we have a table which name is empl have two column (comapnyname,jobdate) i want output after passing parameter which name is month which value is like(feb 2011,or mar 2011 or apr 2011 or jun 2011 etc) output should come the nameof company with jobdate whose jobdate is equal to 3 or greate than three

name of company,jobdate whose job date in particular month is greater than three or equal to three the purpose of this we want to find only the name of company where we visit morethan three times in particular month table structure is

create table empl(companyname varchar2(10),jobdate date)

insert into empl values('ABC','1-feb-2011')
insert into empl values('ABC','10-feb-2011')
insert into empl values('ABC','21-feb-2011')
insert into empl values('xyz','18-feb-2011')
insert into empl values('xyz','1-feb-2012')
insert into empl values('xyz','1-apr-2011')
insert into empl values('ABC','28-feb-2012')

output:

after passing parameter month=feb 2011

companyname jobdate
abc 1-feb-2011
abc 10-feb-2011
abc 21-feb-2011