oracle - select only one row that has the highest count in sql -

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i need select 1 row has highest count. how do that?

this current code: 

 select firstname, lastname, count(*) total  trans   join work   on trans.workid = work.workid  join artist  on work.artistid = artist.artistid  datesold not null  group firstname, lastname;

example current:

firstname |  lastname |  total ------------------------------ tom       |   cruise  |   3 angelina  |   jolie   |   9 britney   |   spears  |   5 ellie     |  goulding |   4

i need select this: 

firstname  |  lastname  |  total -------------------------------- angelina   |  jolie     |   9

in oracle 12, can do:

 select firstname, lastname, count(*) total  trans join       work        on trans.workid = work.workid join       artist       on work.artistid = artist.artistid  datesold not null  group firstname, lastname  order count(*) desc  fetch first 1 row only;

in older versions, can subquery:

select twa.* (select firstname, lastname, count(*) total       trans join            work             on trans.workid = work.workid join            artist            on work.artistid = artist.artistid       datesold not null       group firstname, lastname       order count(*) desc      ) twa rownum = 1;

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