Files
oracle/vg/sp_buffer_hit_ratio.sql
2026-03-12 21:23:47 +01:00

21 lines
706 B
SQL

set echo off
set verify off
column bhr format 999
column mydate heading 'YYYY-MM-DD HH24'
set pages 10000
select
to_char(snap_time,'yyyy-mm-dd HH24') mydate,
new.name buffer_pool_name,
(((new.consistent_gets-old.consistent_gets)+(new.db_block_gets-old.db_block_gets))-(new.physical_reads-old.physical_reads))
/((new.consistent_gets-old.consistent_gets)+(new.db_block_gets-old.db_block_gets))*100 bhr
from perfstat.stats$buffer_pool_statistics old,
perfstat.stats$buffer_pool_statistics new,
perfstat.stats$snapshot sn
where snap_time > sysdate - &&1
and new.name=old.name
and new.snap_id=sn.snap_id
and old.snap_id=sn.snap_id-1
order by 1 asc
/