2026-03-12 20:23:15
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csierra/cs_osstat_cpu_load_chart.sql
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157
csierra/cs_osstat_cpu_load_chart.sql
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----------------------------------------------------------------------------------------
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--
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-- File name: cs_osstat_cpu_load_chart.sql
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--
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-- Purpose: CPU Cores Load as per OS Stats from AWR (time series chart)
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--
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-- Author: Carlos Sierra
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--
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-- Version: 2022/10/03
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--
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-- Usage: Execute connected to CDB or PDB
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--
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-- Enter range of dates and filters when requested.
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--
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-- Example: $ sqlplus / as sysdba
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-- SQL> @cs_osstat_cpu_load_chart.sql
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--
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-- Notes: Developed and tested on 12.1.0.2.
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--
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---------------------------------------------------------------------------------------
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--
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@@cs_internal/cs_primary.sql
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@@cs_internal/cs_set.sql
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@@cs_internal/cs_def.sql
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@@cs_internal/cs_file_prefix.sql
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--
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DEF cs_script_name = 'cs_osstat_cpu_load_chart';
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DEF cs_hours_range_default = '168';
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--
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@@cs_internal/cs_sample_time_from_and_to.sql
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@@cs_internal/cs_snap_id_from_and_to.sql
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--
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--@@cs_internal/&&cs_set_container_to_cdb_root.
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--
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SELECT '&&cs_file_prefix._&&cs_script_name.' cs_file_name FROM DUAL;
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--
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DEF report_title = 'CPU Demand between &&cs_sample_time_from. and &&cs_sample_time_to. UTC';
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DEF chart_title = '&&report_title.';
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DEF xaxis_title = '';
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DEF vaxis_title = '';
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--
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-- (isStacked is true and baseline is null) or (not isStacked and baseline >= 0)
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--DEF is_stacked = "isStacked: false,";
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DEF is_stacked = "isStacked: true,";
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--DEF vaxis_baseline = ", baseline:&&cs_num_cpu_cores., baselineColor:'red'";
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DEF vaxis_baseline = "";
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DEF chart_foot_note_2 = "<br>2) Load: Number of OS processes running or waiting on the run queue";
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DEF chart_foot_note_3 = "<br>3) DBRM: Number of database sessions requesting CPU and waiting on Resource Manager Scheduler";
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DEF chart_foot_note_4 = "<br>4) CPU Demand: Load + DBRM (number of sessions running or waiting for CPU)<br>";
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DEF report_foot_note = 'SQL> @&&cs_script_name..sql "&&cs_sample_time_from." "&&cs_sample_time_to."';
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--
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@@cs_internal/cs_spool_head_chart.sql
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--
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PRO ,{label:'CPU Cores', id:'1', type:'number'}
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-- PRO ,{label:'CPU Threads', id:'2', type:'number'}
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-- PRO ,{label:'Threads Busy', id:'3', type:'number'}
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PRO ,{label:'DBRM', id:'4', type:'number'}
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PRO ,{label:'Load', id:'5', type:'number'}
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PRO ]
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--
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SET HEA OFF PAGES 0;
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/****************************************************************************************/
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WITH
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FUNCTION num_format (p_number IN NUMBER, p_round IN NUMBER DEFAULT 0)
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RETURN VARCHAR2 IS
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BEGIN
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IF p_number IS NULL OR ROUND(p_number, p_round) <= 0 THEN
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RETURN 'null';
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ELSE
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RETURN TO_CHAR(ROUND(p_number, p_round));
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END IF;
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END num_format;
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/****************************************************************************************/
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osstat AS (
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SELECT /*+ MATERIALIZE NO_MERGE */
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CAST(s.begin_interval_time AS DATE) begin_time,
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CAST(s.end_interval_time AS DATE) end_time,
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(CAST(s.end_interval_time AS DATE) - CAST(s.begin_interval_time AS DATE)) * 24 * 3600 seconds,
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h.stat_name,
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CASE
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WHEN h.stat_name IN ('NUM_CPUS','LOAD','NUM_CPU_CORES') THEN h.value
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WHEN h.stat_name LIKE '%TIME' THEN h.value - LAG(h.value) OVER (PARTITION BY h.stat_name ORDER BY h.snap_id)
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ELSE 0
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END value,
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ROW_NUMBER() OVER (PARTITION BY h.stat_name ORDER BY h.snap_id) row_number
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FROM dba_hist_osstat h,
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dba_hist_snapshot s
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WHERE h.dbid = TO_NUMBER('&&cs_dbid.')
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AND h.instance_number = TO_NUMBER('&&cs_instance_number.')
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AND h.snap_id BETWEEN TO_NUMBER('&&cs_snap_id_from.') AND TO_NUMBER('&&cs_snap_id_to.')
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AND h.stat_name IN ('NUM_CPUS','IDLE_TIME','BUSY_TIME','USER_TIME','SYS_TIME','IOWAIT_TIME','NICE_TIME','RSRC_MGR_CPU_WAIT_TIME','LOAD','NUM_CPU_CORES')
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AND s.snap_id = h.snap_id
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AND s.dbid = h.dbid
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AND s.instance_number = h.instance_number
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),
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my_query AS (
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SELECT end_time time,
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ROUND(SUM(CASE stat_name WHEN 'LOAD' THEN value ELSE 0 END), 1) load,
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SUM(CASE stat_name WHEN 'NUM_CPU_CORES' THEN value ELSE 0 END) cores,
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SUM(CASE stat_name WHEN 'NUM_CPUS' THEN value ELSE 0 END) cpus,
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ROUND(SUM(CASE stat_name WHEN 'IDLE_TIME' THEN value / 100 / seconds ELSE 0 END), 1) idle,
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ROUND(SUM(CASE stat_name WHEN 'BUSY_TIME' THEN value / 100 / seconds ELSE 0 END), 1) busy,
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ROUND(SUM(CASE stat_name WHEN 'USER_TIME' THEN value / 100 / seconds ELSE 0 END), 1) usr,
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ROUND(SUM(CASE stat_name WHEN 'SYS_TIME' THEN value / 100 / seconds ELSE 0 END), 1) sys,
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ROUND(SUM(CASE stat_name WHEN 'IOWAIT_TIME' THEN value / 100 / seconds ELSE 0 END), 1) io,
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ROUND(SUM(CASE stat_name WHEN 'NICE_TIME' THEN value / 100 / seconds ELSE 0 END), 1) nice,
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ROUND(SUM(CASE stat_name WHEN 'RSRC_MGR_CPU_WAIT_TIME' THEN value / 100 / seconds ELSE 0 END), 1) dbrm
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FROM osstat
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WHERE row_number > 1 -- remove first row
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AND value >= 0
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AND seconds > 0
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GROUP BY
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end_time
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)
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SELECT ', [new Date('||
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TO_CHAR(q.time, 'YYYY')|| /* year */
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','||(TO_NUMBER(TO_CHAR(q.time, 'MM')) - 1)|| /* month - 1 */
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','||TO_CHAR(q.time, 'DD')|| /* day */
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','||TO_CHAR(q.time, 'HH24')|| /* hour */
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','||TO_CHAR(q.time, 'MI')|| /* minute */
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','||TO_CHAR(q.time, 'SS')|| /* second */
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')'||
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','||num_format(q.cores, 1)||
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-- ','||num_format(q.cpus, 1)||
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-- ','||num_format(q.busy, 1)||
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','||num_format(q.dbrm, 1)||
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','||num_format(q.load, 1)||
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']'
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FROM my_query q
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ORDER BY
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q.time
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/
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/****************************************************************************************/
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SET HEA ON PAGES 100;
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--
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-- [Line|Area|SteppedArea|Scatter]
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DEF cs_chart_type = 'Line';
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-- disable explorer with "//" when using Pie
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DEF cs_chart_option_explorer = '';
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-- enable pie options with "" when using Pie
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DEF cs_chart_option_pie = '//';
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-- use oem colors
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DEF cs_oem_colors_series = '//';
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DEF cs_oem_colors_slices = '//';
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-- for line charts
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DEF cs_curve_type = '//';
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--
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@@cs_internal/cs_spool_id_chart.sql
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@@cs_internal/cs_spool_tail_chart.sql
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PRO
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PRO &&report_foot_note.
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--
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--@@cs_internal/&&cs_set_container_to_curr_pdb.
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--
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@@cs_internal/cs_undef.sql
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@@cs_internal/cs_reset.sql
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--
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