根据不同的指标获取TOP 10 SQL
select sql.*,
(select SQL_TEXT
from dba_hist_sqltext t
where t.sql_id = sql.sql_id
and rownum = 1) SQLTEXT
from (select a.*,
RANK() over(order by els desc) as r_els,
RANK() over(order by phy desc) as r_phy,
RANK() over(order by get desc) as r_get,
RANK() over(order by exe desc) as r_exe,
RANK() over(order by CPU desc) as r_cpu
from (
select sql_id,
sum(executions_delta) exe,
round(sum(elapsed_time_delta) / 1e6, 2) els,
round(sum(cpu_time_delta) / 1e6, 2) cpu,
round(sum(iowait_delta) / 1e6, 2) iow,
sum(buffer_gets_delta) get,
sum(disk_reads_delta) phy,
sum(rows_processed_delta) RWO,
round(sum(elapsed_time_delta) /
greatest(sum(executions_delta), 1) / 1e6,
4) elsp,
round(sum(cpu_time_delta) /
greatest(sum(executions_delta), 1) / 1e6,
4) cpup,
round(sum(iowait_delta) /
greatest(sum(executions_delta), 1) / 1e6,
4) iowp,
round(sum(buffer_gets_delta) /
greatest(sum(executions_delta), 1),
2) getp,
round(sum(disk_reads_delta) /
greatest(sum(executions_delta), 1),
2) phyp,
round(sum(rows_processed_delta) /
greatest(sum(executions_delta), 1),
2) ROWP
from dba_hist_sqlstat s
--where snap_id between ... and ...
group by sql_id) a
) SQL
where r_els <= 10
or r_phy <= 10
or r_cpu <= 10
order by els desc
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