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ash_last_x_secs.sql
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@plusenv
undef for_the_last_x_sec
col pct format 99.9 head '%'
col cnt format 99999 head 'Ses|Cnt'
col oname format a60 head 'Object - Subobject'
col event format a38 head 'Wait Event / On CPU' trunc
col objid format 99999999 head 'Obj Id'
-- on cpu vs waiting --
with state_total as
(select count(*) evtot from v$active_session_history
where sample_time > sysdate-&&for_the_last_x_sec/86400
and session_state is not null
)
,sess_state as
(
select count(*) cnt, session_state
from v$active_session_history
where sample_time > sysdate-&&for_the_last_x_sec/86400
group by session_state
)
select cnt
,(cnt/evtot)*100 pct
,session_state
from state_total
,sess_state
order by pct
/
-- by wait event --
with event_total as
(
select count(*) evtot from v$active_session_history
where sample_time > sysdate-&&for_the_last_x_sec/86400
and event is not null
)
,event_grp as
(
select cnt, event
from
(
select count(*) cnt, event
from v$active_session_history
where sample_time > sysdate-&&for_the_last_x_sec/86400
and event is not null
group by event
order by count(*) desc
)
where rownum <=15
)
select cnt
,(cnt/evtot)*100 pct
,event
from event_total
,event_grp
order by pct
/
-- on cpu : break down by sqlid --
with cpu_total as
(select count(*) cputot from v$active_session_history
where sample_time > sysdate-&&for_the_last_x_sec/86400
and session_state = 'ON CPU'
)
,sqlid_cpu as
(
select cnt, sql_id, current_obj#
from
(
select count(*) cnt, sql_id, current_obj#
from v$active_session_history
where sample_time > sysdate-&&for_the_last_x_sec/86400
and session_state = 'ON CPU'
group by sql_id, current_obj#
order by count(*) desc
)
where rownum <=15
)
select cnt
,(cnt/cputot)*100 pct
,'ON CPU' event
,sql_id
,current_obj# objid
,o.object_name||decode(subobject_name,null,' ',' - ')||subobject_name oname
from cpu_total
,sqlid_cpu g
,dba_objects o
where g.current_obj# = o.object_id (+)
order by pct
/
-- by wait event + sqlid + obj --
with event_total as
(select count(*) evtot from v$active_session_history
where sample_time > sysdate-&&for_the_last_x_sec/86400
and event is not null
and current_obj# >= 0
)
,event_grp as
(
select cnt, event, sql_id, current_obj#
from
(
select count(*) cnt, event, sql_id, current_obj#
from v$active_session_history
where sample_time > sysdate-&&for_the_last_x_sec/86400
and event is not null
and current_obj# >= 0
group by event, sql_id, current_obj#
order by count(*) desc
)
where rownum <=15
)
select cnt
,(cnt/evtot)*100 pct
,event
,sql_id
,current_obj# objid
,o.object_name||decode(subobject_name,null,' ',' - ')||subobject_name oname
from event_total
,event_grp g
,dba_objects o
where g.current_obj# = o.object_id (+)
order by pct
/