How to get sqltext from sqlid, when many sqls of same id are running?

I have many sqls of the same id running, so this doesn't work. I get duplicated lines.

select address, SQL_TEXT fulltext
from gv$sqltext
where sql_id='1vb5xdmb3zgy5'
order by PIECE;

Anyone know of a better way?

Or Perhaps I should add another condition to the WHERE clause, like the 'ADDRESS' column?

thanks