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ash_graph_histash_by_dbid_sqlid.sql
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ash_graph_histash_by_dbid_sqlid.sql
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/*
ASH graph from dba_hist_active_sess_history no v$active_session_history
input DBID and SQL_ID
time filter by # of days, input variable &v_days
Output looks like
TO_CHAR( AAS PCT1 FIRST PCT2 SECOND GRAPH
-------- --- ---- --------------- ---- --------------- -------------------------------------------
15 15:00 7 46 db file sequent 19 CPU +++++++ooooooooooooo4ooooooooooo------
15 16:00 6 53 db file sequent 31 CPU +++++++++ooooooooooo4oooooooo---
15 17:00 7 48 db file sequent 41 CPU +++++++++++++++ooooo4oooooooooooooooo-
15 18:00 5 55 CPU 37 db file sequent ++++++++++++++oooooo4oooooo-
15 19:00 1 64 CPU 21 db file sequent ++o 4
15 20:00 1 63 CPU 19 read by other s ++++o- 4
15 21:00 2 31 db file sequent 24 CPU ++ooo---- 4
15 22:00 3 35 CPU 24 db file scatter +++++ooooooo--- 4
15 23:00 6 29 log file sync 25 db file sequent ++++ooooooooo-------4-------------
16 00:00 7 52 db file sequent 27 CPU ++++++++++oooooooooo4ooooooooooooooo--
16 01:00 4 57 CPU 36 db file sequent +++++++++++oooooooo 4
16 02:00 6 38 db file sequent 21 CPU ++++++oooooooooooo--4---------
16 03:00 3 69 db file sequent 20 CPU +++ooooooooooo 4
16 04:00 0 45 db file sequent 28 CPU o 4
16 05:00 1 58 db file sequent 24 CPU +ooo 4
16 06:00 1 41 db file sequent 39 CPU +oo 4
The "graph" on the right shows the load over time each line is an hour by default.
The "+" represent CPU, "o" represent I/O and "-" represent a wait.
The columns "FIRST" and "SECOND" represent the top two things happening on the database.
*/
Def v_secs=3600 -- bucket size
Def v_days=1 -- total time analyze
Def v_bars=5 -- size of one AAS in characters
Def v_graph=80
col aveact format 999.99
col graph format a80
col fpct format 9.99
col spct format 9.99
col tpct format 9.99
col aas format 999.99
col aas1 format 9.99
col aas2 format 9.99
col pct1 format 999
col pct2 format 999
col first format a15
col second format a15
Def p_value=4
select to_char(start_time,'DD HH24:MI'),
--samples,
--total,
--waits,
--cpu,
(total/&v_secs) aas,
--round(fpct * (total/&v_secs),2) aas1,
fpct*100 pct1,
decode(fpct,null,null,first) first,
--round(spct * (total/&v_secs),2) aas2,
spct*100 pct2,
decode(spct,null,null,second) second,
-- substr, ie trunc, the whole graph to make sure it doesn't overflow
substr(
-- substr, ie trunc, the graph below the # of CPU cores line
-- draw the whole graph and trunc at # of cores line
substr(
rpad('+',round((cpu*&v_bars)/&v_secs),'+') ||
rpad('o',round((io*&v_bars)/&v_secs),'o') ||
rpad('-',round((waits*&v_bars)/&v_secs),'-') ||
rpad(' ',&p_value * &v_bars,' '),0,(&p_value * &v_bars)) ||
&p_value ||
-- draw the whole graph, then cut off the amount we drew before the # of cores
substr(
rpad('+',round((cpu*&v_bars)/&v_secs),'+') ||
rpad('o',round((io*&v_bars)/&v_secs),'o') ||
rpad('-',round((waits*&v_bars)/&v_secs),'-') ||
rpad(' ',&p_value * &v_bars,' '),(&p_value * &v_bars),( &v_graph-&v_bars*&p_value) )
,0,&v_graph)
graph
-- spct,
-- decode(spct,null,null,second) second,
-- tpct,
-- decode(tpct,null,null,third) third
from (
select start_time
, max(samples) samples
, sum(top.total) total
, round(max(decode(top.seq,1,pct,null)),2) fpct
, substr(max(decode(top.seq,1,decode(top.event,'ON CPU','CPU',event),null)),0,15) first
, round(max(decode(top.seq,2,pct,null)),2) spct
, substr(max(decode(top.seq,2,decode(top.event,'ON CPU','CPU',event),null)),0,15) second
, round(max(decode(top.seq,3,pct,null)),2) tpct
, substr(max(decode(top.seq,3,decode(top.event,'ON CPU','CPU',event),null)),0,10) third
, sum(waits) waits
, sum(io) io
, sum(cpu) cpu
from (
select
to_date(tday||' '||tmod*&v_secs,'YYMMDD SSSSS') start_time
, event
, total
, row_number() over ( partition by id order by total desc ) seq
, ratio_to_report( sum(total)) over ( partition by id ) pct
, max(samples) samples
, sum(decode(event,'ON CPU',total,0)) cpu
, sum(decode(event,'ON CPU',0,
'db file sequential read',0,
'db file scattered read',0,
'db file parallel read',0,
'direct path read',0,
'direct path read temp',0,
'direct path write',0,
'direct path write temp',0, total)) waits
, sum(decode(event,'db file sequential read',total,
'db file scattered read',total,
'db file parallel read',total,
'direct path read',total,
'direct path read temp',total,
'direct path write',total,
'direct path write temp',total, 0)) io
from (
select
to_char(sample_time,'YYMMDD') tday
, trunc(to_char(sample_time,'SSSSS')/&v_secs) tmod
, to_char(sample_time,'YYMMDD')||trunc(to_char(sample_time,'SSSSS')/&v_secs) id
, decode(ash.session_state,'ON CPU','ON CPU',ash.event) event
, sum(decode(session_state,'ON CPU',10,decode(session_type,'BACKGROUND',0,10))) total
, (max(sample_id)-min(sample_id)+1) samples
from
dba_hist_active_sess_history ash
where
-- sample_time > sysdate - &v_days
-- and sample_time < ( select min(sample_time) from v$active_session_history)
dbid=&DBID
and sql_id='&SQL_ID'
group by trunc(to_char(sample_time,'SSSSS')/&v_secs)
, to_char(sample_time,'YYMMDD')
, decode(ash.session_state,'ON CPU','ON CPU',ash.event)
) chunks
group by id, tday, tmod, event, total
) top
group by start_time
) aveact
order by start_time
/