declare
    v_tabname varchar2(128 char) := 'DROPME_T';
begin
    for v in 
    (
        select 
              q'{
              begin    
                  dbms_stats.gather_table_stats
                  (
                      ownname=>'}'||user||q'{',
                      tabname=>'}'||v_tabname||q'{',
                      partname=>'}'||partition_name||q'{',
                      cascade=>true, 
                      granularity=>'PARTITION'
                  ); 
              end;
              }' sql_ 
          from 
              user_tab_partitions 
          where 
              table_name = v_tabname 
              /*and last_analyzed is null*/
    ) loop
        execute immediate v.sql_;
        --dbms_output.put_line(v.sql_);
    end loop;
end;
/