2026-03-12 20:23:15
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vg/sp_sql_capture_histograms.sql
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141
vg/sp_sql_capture_histograms.sql
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@@header
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set term off
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/*
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*
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* Author : Vishal Gupta
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* Purpose : Display sql capture histograms (equi-width buckets) from statspack repository
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* Paraemter: 1 - bucket number (default value 20)
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* 2 - threshold multiplier (default value 10)
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*
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* Revision History:
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* ===================
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* Date Author Description
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* --------- ------------ -----------------------------------------
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* 05-Aug-07 Vishal Gupta First Draft
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*
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*
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*/
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set term on
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set lines 200
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set pages 50
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define bucket_numbers="&&1"
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define threshold_multiplier="&&2"
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COLUMN executions_bucket_ceil HEADING "Executions|Bucket Ceil" FORMAT 999,999 ON
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COLUMN parse_calls_bucket_ceil HEADING "ParseCalls|Bucket Ceil" FORMAT 999,999 ON
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COLUMN disk_reads_bucket_ceil HEADING "DiskReads|Bucket Ceil" FORMAT 999,999,999 ON
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COLUMN buffer_gets_bucket_ceil HEADING "BufferGets|Bucket Ceil" FORMAT 999,999,999 ON
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COLUMN sharable_mem_bucket_ceil HEADING "SharableMem|Bucket Ceil" FORMAT 999,999,999 ON
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COLUMN version_count_bucket_ceil HEADING "Version|Bucket Ceil" FORMAT 999,999 ON
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COLUMN executions_Count HEADING "Executions|Count" FORMAT 999,999 ON
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COLUMN parse_calls_Count HEADING "ParseCalls|Count" FORMAT 999,999 ON
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COLUMN disk_reads_Count HEADING "DiskReads|Count" FORMAT 999,999 ON
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COLUMN buffer_gets_Count HEADING "BufferGets|Count" FORMAT 999,999 ON
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COLUMN sharable_mem_Count HEADING "SharableMem|Count" FORMAT 999,999 ON
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COLUMN version_count_Count HEADING "Version|Count" FORMAT 999,999 ON
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COLUMN executions_percent HEADING "Executions|% Records" FORMAT 999.99 ON
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COLUMN parse_calls_percent HEADING "ParseCalls|% Records" FORMAT 999.99 ON
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COLUMN disk_reads_percent HEADING "DiskReads|% Records" FORMAT 999.99 ON
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COLUMN buffer_gets_percent HEADING "BufferGets|% Records" FORMAT 999.99 ON
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COLUMN sharable_mem_percent HEADING "SharableMem|% Records" FORMAT 999.99 ON
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COLUMN version_count_percent HEADING "Version|% Records" FORMAT 999.99 ON
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with
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/* Define the constants for this script */
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constants as
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(select NVL(&bucket_numbers,20) bucket_numbers -- number of width balanced histograms
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, NVL(&threshold_multiplier,10) threshold_multiplier -- statspack parameter threshold multipler
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from dual),
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/* Define the constants for this script */
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buckets as
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(SELECT ss.SNAP_ID
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, WIDTH_BUCKET(ss.executions , 0, sp.EXECUTIONS_TH * c.threshold_multiplier, c.bucket_numbers ) executions_BUCKET_num
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, WIDTH_BUCKET(ss.parse_calls , 0, sp.PARSE_CALLS_TH * c.threshold_multiplier, c.bucket_numbers ) parse_calls_BUCKET_num
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, WIDTH_BUCKET(ss.disk_reads , 0, sp.DISK_READS_TH * c.threshold_multiplier, c.bucket_numbers ) disk_reads_BUCKET_num
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, WIDTH_BUCKET(ss.buffer_gets , 0, sp.BUFFER_GETS_TH * c.threshold_multiplier, c.bucket_numbers ) buffer_gets_BUCKET_num
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, WIDTH_BUCKET(ss.sharable_mem , 0, sp.SHARABLE_MEM_TH * c.threshold_multiplier, c.bucket_numbers ) sharable_mem_BUCKET_num
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, WIDTH_BUCKET(ss.version_count, 0, sp.VERSION_COUNT_TH * c.threshold_multiplier, c.bucket_numbers ) version_count_BUCKET_num
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, WIDTH_BUCKET(ss.executions , 0, sp.EXECUTIONS_TH * c.threshold_multiplier, c.bucket_numbers )
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* ( (sp.EXECUTIONS_TH * c.threshold_multiplier)/c.bucket_numbers) executions_BUCKET_ceil
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, WIDTH_BUCKET(ss.parse_calls , 0, sp.PARSE_CALLS_TH * c.threshold_multiplier, c.bucket_numbers )
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* ( (sp.PARSE_CALLS_TH * c.threshold_multiplier)/c.bucket_numbers) parse_calls_BUCKET_ceil
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, WIDTH_BUCKET(ss.disk_reads , 0, sp.DISK_READS_TH * c.threshold_multiplier, c.bucket_numbers )
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* ( (sp.DISK_READS_TH * c.threshold_multiplier)/c.bucket_numbers) disk_reads_BUCKET_ceil
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, WIDTH_BUCKET(ss.buffer_gets , 0, sp.BUFFER_GETS_TH * c.threshold_multiplier, c.bucket_numbers )
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* ( (sp.BUFFER_GETS_TH * c.threshold_multiplier)/c.bucket_numbers) buffer_gets_BUCKET_ceil
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, WIDTH_BUCKET(ss.sharable_mem , 0, sp.SHARABLE_MEM_TH * c.threshold_multiplier, c.bucket_numbers )
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* ( (sp.SHARABLE_MEM_TH * c.threshold_multiplier)/c.bucket_numbers) sharable_mem_BUCKET_ceil
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, WIDTH_BUCKET(ss.version_count, 0, sp.VERSION_COUNT_TH * c.threshold_multiplier, c.bucket_numbers )
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* ( (sp.VERSION_COUNT_TH * c.threshold_multiplier)/c.bucket_numbers) version_count_BUCKET_ceil
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FROM stats$sql_summary ss
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, stats$statspack_parameter sp
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, v$database d
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, v$instance i
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, constants c
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WHERE ss.dbid = d.dbid
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AND ss.instance_number = i.instance_number
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AND sp.dbid = d.dbid
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AND sp.instance_number = i.instance_number
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),
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executions_buckets as
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( select rownum lv_rownum, a1.* from (select executions_BUCKET_num, executions_BUCKET_ceil, count(1) count
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from buckets group by executions_BUCKET_num, executions_BUCKET_ceil order by 1) a1 ) ,
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parse_calls_buckets as
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( select rownum lv_rownum, a2.* from (select parse_calls_BUCKET_num, parse_calls_BUCKET_ceil, count(1) count
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from buckets group by parse_calls_BUCKET_num, parse_calls_BUCKET_ceil order by 1) a2 ) ,
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disk_reads_buckets as
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( select rownum lv_rownum, a3.* from (select disk_reads_BUCKET_num, disk_reads_BUCKET_ceil, count(1) count
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from buckets group by disk_reads_BUCKET_num, disk_reads_BUCKET_ceil order by 1) a3 ) ,
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buffer_gets_buckets as
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( select rownum lv_rownum, a4.* from (select buffer_gets_BUCKET_num, buffer_gets_BUCKET_ceil, count(1) count
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from buckets group by buffer_gets_BUCKET_num,buffer_gets_BUCKET_ceil order by 1) a4 ) ,
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sharable_mem_buckets as
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( select rownum lv_rownum, a5.* from (select sharable_mem_BUCKET_num, sharable_mem_BUCKET_ceil, count(1) count
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from buckets group by sharable_mem_BUCKET_num, sharable_mem_BUCKET_ceil order by 1) a5 ) ,
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version_count_buckets as
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( select rownum lv_rownum, a6.* from (select version_count_BUCKET_num, version_count_BUCKET_ceil, count(1) count
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from buckets group by version_count_BUCKET_num, version_count_BUCKET_ceil order by 1) a6 )
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select e.executions_bucket_ceil
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, p.parse_calls_BUCKET_ceil
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, d.disk_reads_BUCKET_ceil
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, b.buffer_gets_BUCKET_ceil
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, s.sharable_mem_BUCKET_ceil
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, v.version_count_BUCKET_ceil
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-- , e.count executions_count
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-- , p.count parse_calls_count
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-- , d.count disk_reads_count
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-- , b.count buffer_gets_count
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-- , s.count sharable_mem_count
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-- , v.count version_count_count
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, ROUND((e.count / total_count)*100,2) executions_percent
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, ROUND((p.count / total_count)*100,2) parse_calls_percent
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, ROUND((d.count / total_count)*100,2) disk_reads_percent
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, ROUND((b.count / total_count)*100,2) buffer_gets_percent
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, ROUND((s.count / total_count)*100,2) sharable_mem_percent
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, ROUND((v.count / total_count)*100,2) version_count_percent
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from executions_buckets e
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, parse_calls_buckets p
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, disk_reads_buckets d
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, buffer_gets_buckets b
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, sharable_mem_buckets s
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, version_count_buckets v
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, (select count(1) total_count
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from stats$sql_summary ss , v$instance i , v$database d
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WHERE ss.dbid = d.dbid
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AND ss.instance_number = i.instance_number
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)
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where e.lv_rownum = p.lv_rownum (+)
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and e.lv_rownum = d.lv_rownum (+)
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and e.lv_rownum = b.lv_rownum (+)
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and e.lv_rownum = s.lv_rownum (+)
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and e.lv_rownum = v.lv_rownum (+)
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order by 1
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/
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@@footer
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