[提问]无法创建runstats包，如何解决？
这是我从官网上找到的代码
create or replace package runstats_pkg
as
  procedure rs_start;
  procedure rs_middle;
  procedure rs_stop( p_difference_threshold in number default 0 );
end;
/

create or replace package body runstats_pkg
as

g_start number;
g_run1 number;
g_run2 number;

procedure rs_start
is 
begin
  delete from run_stats;

  insert into run_stats 
  select 'before', stats.* from stats;
   
  g_start := dbms_utility.get_time;
end;

procedure rs_middle
is
begin
  g_run1 := (dbms_utility.get_time-g_start);
 
  insert into run_stats 
  select 'after 1', stats.* from stats;
  g_start := dbms_utility.get_time;

end;

procedure rs_stop(p_difference_threshold in number default 0)
is
begin
  g_run2 := (dbms_utility.get_time-g_start);

  dbms_output.put_line
  ( 'Run1 ran in ' || g_run1 || ' hsecs' );
  dbms_output.put_line
  ( 'Run2 ran in ' || g_run2 || ' hsecs' );
  dbms_output.put_line
  ( 'run 1 ran in ' || round(g_run1/g_run2*100,2) || 
  '% of the time' );
  dbms_output.put_line( chr(9) );

  insert into run_stats 
  select 'after 2', stats.* from stats;

  dbms_output.put_line
  ( rpad( 'Name', 30 ) || lpad( 'Run1', 12 ) || 
  lpad( 'Run2', 12 ) || lpad( 'Diff', 12 ) );

  for x in 
  ( select rpad( a.name, 30 ) || 
  to_char( b.value-a.value, '999,999,999' ) || 
  to_char( c.value-b.value, '999,999,999' ) || 
  to_char( ( (c.value-b.value)-(b.value-a.value)), '999,999,999' ) data
  from run_stats a, run_stats b, run_stats c
  where a.name = b.name
  and b.name = c.name
  and a.runid = 'before'
  and b.runid = 'after 1'
  and c.runid = 'after 2'
  -- and (c.value-a.value) > 0
  and abs( (c.value-b.value) - (b.value-a.value) ) 
  > p_difference_threshold
  order by abs( (c.value-b.value)-(b.value-a.value))
  ) loop
  dbms_output.put_line( x.data );
  end loop;

  dbms_output.put_line( chr(9) );
  dbms_output.put_line
  ( 'Run1 latches total versus runs -- difference and pct' );
  dbms_output.put_line
  ( lpad( 'Run1', 12 ) || lpad( 'Run2', 12 ) || 
  lpad( 'Diff', 12 ) || lpad( 'Pct', 10 ) );

  for x in 
  ( select to_char( run1, '999,999,999' ) ||
  to_char( run2, '999,999,999' ) ||
  to_char( diff, '999,999,999' ) ||
  to_char( round( run1/run2*100,2 ), '99,999.99' ) || '%' data
  from ( select sum(b.value-a.value) run1, sum(c.value-b.value) run2,
  sum( (c.value-b.value)-(b.value-a.value)) diff
  from run_stats a, run_stats b, run_stats c
  where a.name = b.name
  and b.name = c.name
  and a.runid = 'before'
  and b.runid = 'after 1'
  and c.runid = 'after 2'
  and a.name like 'LATCH%'
  )
  ) loop
  dbms_output.put_line( x.data );