ORACLE分析表和索引的指令碼

 

--analyze.sqlset serveroutput on size 100000
declare
  v_per number(3);
  v_start number := dbms_utility.get_time;
  v_end   number;
beginfor rec in (select segment_name,segment_type,ceil(sum(bytes)/1024/1024) segment_size
  from user_segments group by segment_name,segment_type)
loop    if rec.segment_type = 'INDEX' then
         dbms_stats.gather_index_stats(ownname=>'citictest',  --自己改一下
                                       INDNAME=>rec.segment_name
                                      );--        dbms_output.put_line(rec.segment_name||' '||rec.segment_size||'m '||ceil((dbms_utility.get_time - v_start)/100)||'s');
         v_start := dbms_utility.get_time;    elsif rec.segment_type = 'TABLE' then
        case when rec.segment_size < 32 then
            v_per := 100;
             when rec.segment_size < 320 then
            v_per := 10;
        else
            v_per := 1;
        end case;
             dbms_stats.gather_table_stats(OWNNAME=>'citictest',
                   TABNAME=>rec.segment_name,
                   ESTIMATE_PERCENT=>v_per,
                   METHOD_OPT=>'FOR ALL INDEXED COLUMNS');--         dbms_output.put_line(rec.segment_name||' '||rec.segment_size||'m '||ceil((dbms_utility.get_time - v_start)/100)||'s');
         v_start := dbms_utility.get_time;    end if;
end loop;
end;
/                                        資訊來源：http://www.cnoug.org/viewthread.php?tid=19359