Как же замечателен 11g:

create or replace function get_cursor(sql_string in varchar2) 
return sys_refcursor is
 c number;
 ignore number;
begin
 c:=dbms_sql.open_cursor();
 dbms_sql.parse(c,sql_string,dbms_sql.native);
 ignore:=dbms_sql.execute(c);
 return(dbms_sql.to_refcursor(c));
end get_cursor;

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