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Teko ea ho theha analogue ea ASH bakeng sa PostgreSQL

Mokhoa oa bothata

Ho ntlafatsa lipotso tsa PostgreSQL, bokhoni ba ho sekaseka nalane ea ts'ebetso, haholoholo, ho leta, linotlolo, le lipalo tsa tafole li hlokahala haholo.

Menyetla e teng

Sesebelisoa sa Tlhahlobo ea Mosebetsi oa Histori kapa "AWR bakeng sa Postgres": tharollo e khahlisang haholo, empa ha ho na nalane ea pg_stat_activity le pg_locks.

pgsentinel extension :
«Lintlha tsohle tse bokelletsoeng li bolokoa ho RAM feela, 'me palo ea memori e sebelisitsoeng e laoloa ke palo ea lirekoto tsa ho qetela tse bolokiloeng.

Ho kenyelelitsoe karolo ea queryid - potso e ts'oanang ho tsoa ho katoloso ea pg_stat_statements (ho hlokahala hore e kenyelloe pele).«

Sena, ehlile, se ka thusa haholo, empa ntho e thata ka ho fetisisa ke ntlha ea pele. ”Lintlha tsohle tse bokelletsoeng li bolokiloe feela ho RAM ”, ke. ho na le tšusumetso holim'a motheo oa sepheo. Ho phaella moo, ha ho na histori ea senotlolo le lipalo-palo tsa tafole. Tseo. tharollo ka kakaretso ha e ea fella: “Ha ho na sephutheloana se seng se lokiselitsoe ho kenya. Ho khothaletsoa hore u khoasolle mehloli le ho bokella laebrari ka bouena. Pele o hloka ho kenya sephutheloana sa "devel" bakeng sa seva sa hau mme o behe tsela ea ho pg_config ho PATH e fapaneng.".

Ka kakaretso, ho na le likhang tse ngata, 'me tabeng ea li-database tse tebileng tsa tlhahiso, ho ka' na ha se ke ha khoneha ho etsa letho ka seva. Re hloka ho tla ka ntho ea rona hape.

Temoso

Ka lebaka la molumo o moholo haholo le ka lebaka la nako ea tlhahlobo e sa fellang, sengoloa ke sa mofuta oa tlhaiso-leseling, ho fapana le sete sa lintlha le liphetho tsa mahareng.
Boitsebiso bo eketsehileng bo tla lokisoa hamorao, ka likarolo

Litlhoko tsa moralo bakeng sa tharollo

Hoa hlokahala ho theha sesebelisoa se u lumellang ho boloka:

pg_stat_activity histori ea pono
Nalane ea senotlolo sa nako u sebelisa pono ea pg_locks

Tlhokahalo ea tharollo- fokotsa tšusumetso ho database eo u batlang ho e etsa.

Kakanyo e akaretsang- moemeli oa pokello ea lintlha ha a hlahisoe sebakeng sa polokelo ea litaba, empa sebakeng sa polokelo ea litaba e le tšebeletso ea systemd. E, tahlehelo e 'ngoe ea data e ka khoneha, empa sena ha se bohlokoa bakeng sa ho tlaleha, empa ha ho na tšusumetso ho database ea sepheo ho latela sebaka sa memori le disk. 'Me tabeng ea ho sebelisa letamo la khokahanyo, phello ea mekhoa ea mosebedisi e fokola haholo.

Mekhahlelo ea ho phethahatsa

1.Litafole tsa litšebeletso

Ho sebelisoa schema e fapaneng ho boloka litafole, e le hore ho se ke ha rarahana ho hlahlojoa ha litafole tse kholo tse sebelisoang.

DROP SCHEMA IF EXISTS activity_hist ;
CREATE SCHEMA activity_hist AUTHORIZATION monitor ;

Bohlokoa: Leano ha lea etsoa ka har'a polokelo ea litaba tse reriloeng, empa le bobolokelong ba ho beha leihlo.

pg_stat_activity histori ea pono

Tafole e sebelisoa ho boloka linepe tsa hajoale tsa pono ea pg_stat_activity

activity_hist.history_pg_stat_activity :

--ACTIVITY_HIST.HISTORY_PG_STAT_ACTIVITY
DROP TABLE IF EXISTS activity_hist.history_pg_stat_activity;
CREATE TABLE activity_hist.history_pg_stat_activity
(
  timepoint timestamp without time zone ,
  datid             oid  , 
  datname           name ,
  pid               integer,
  usesysid          oid    ,
  usename           name   ,
  application_name  text   ,
  client_addr       inet   ,
  client_hostname   text   ,
  client_port       integer,
  backend_start     timestamp with time zone ,
  xact_start        timestamp with time zone ,
  query_start       timestamp with time zone ,
  state_change      timestamp with time zone ,
  wait_event_type   text ,                     
  wait_event        text ,                   
  state             text ,                  
  backend_xid       xid  ,                 
  backend_xmin      xid  ,                
  query             text ,               
  backend_type      text ,  
  queryid           bigint
);

Ho potlakisa ho kenya - ha ho li-index kapa lithibelo.

Ho boloka nalane ka boeona, ho sebelisoa tafole e arohaneng:

activity_hist.archive_pg_stat_activity :

DROP TABLE IF EXISTS activity_hist.archive_pg_stat_activity;
CREATE TABLE activity_hist.archive_pg_stat_activity
(
  timepoint timestamp without time zone ,
  datid             oid  , 
  datname           name ,
  pid               integer,
  usesysid          oid    ,
  usename           name   ,
  application_name  text   ,
  client_addr       inet   ,
  client_hostname   text   ,
  client_port       integer,
  backend_start     timestamp with time zone ,
  xact_start        timestamp with time zone ,
  query_start       timestamp with time zone ,
  state_change      timestamp with time zone ,
  wait_event_type   text ,                     
  wait_event        text ,                   
  state             text ,                  
  backend_xid       xid  ,                 
  backend_xmin      xid  ,                
  query             text ,               
  backend_type      text ,
  queryid           bigint
)
PARTITION BY RANGE (timepoint);

Kaha tabeng ena ha ho na litlhoko tsa lebelo la ho kenya, li-index tse ling li bōpiloe ho potlakisa ho thehoa ha litlaleho.

Nalane e thibelang nako

Tafole e sebelisoa ho boloka linepe tsa hajoale tsa linotlolo tsa nako:

activity_hist.history_locking :

--ACTIVITY_HIST.HISTORY_LOCKING
DROP TABLE IF EXISTS activity_hist.history_locking;
CREATE TABLE activity_hist.history_locking
(
	timepoint timestamp without time zone ,
	locktype text ,
	relation oid ,
	mode text ,
	tid xid ,
	vtid text ,
	pid integer ,
	blocking_pids integer[] ,
	granted boolean
);

Hape, ho potlakisa ho kenya, ha ho na li-index kapa lithibelo.

Ho boloka nalane ka boeona, ho sebelisoa tafole e arohaneng:

activity_hist.archive_locking:

DROP TABLE IF EXISTS activity_hist.archive_locking;
CREATE TABLE activity_hist.archive_locking
(
	timepoint timestamp without time zone ,
	locktype text ,
	relation oid ,
	mode text ,
	tid xid ,
	vtid text ,
	pid integer ,
	blocking_pids integer[] ,
	granted boolean	
)
PARTITION BY RANGE (timepoint);

Kaha tabeng ena ha ho na litlhoko tsa lebelo la ho kenya, li-index tse ling li bōpiloe ho potlakisa ho thehoa ha litlaleho.

2.Ho tlatsa nalane ea hajoale

Ho bokella linepe tsa pono ka kotloloho, ho sebelisoa bash script e tsamaisang mosebetsi oa plpgsql.

get_current_activity.sh

#!/bin/bash
#########################################################
#get_current_activity.sh

ERROR_FILE='/home/demon/get_current_activity'$(date +%Y%m%d-)'T'$(date +%H)$(date +%M)$(date +%S)
host=$1
s_name=$2
s_pass=$3

psql  -A -t -q -v ON_ERROR_STOP=1 -c "SELECT activity_hist.get_current_activity( '$host' , '$s_name' , '$s_pass' )" >/dev/null 2>$ERROR_FILE

line_count=`cat $ERROR_FILE | wc -l`
if [[ $line_count != '0' ]];
then
    rm -f /home/demon/*.err >/dev/null 2>/dev/null
	cp $ERROR_FILE $ERROR_FILE'.err' >/dev/null 2>/dev/null  
fi
rm $ERROR_FILE >/dev/null 2>/dev/null
exit 0

plgsql Ts'ebetso ea dblink e fihlella lipono sebakeng sa polokelo ea litaba ebe e kenya mela ka har'a litafole tsa lits'ebeletso sebakeng sa polokelo ea litaba.

get_current_activity.sql

CREATE OR REPLACE FUNCTION activity_hist.get_current_activity( current_host text , current_s_name text , current_s_pass text ) RETURNS BOOLEAN AS $$
DECLARE 
  database_rec record;
  dblink_str text ;
BEGIN   

	EXECUTE 'SELECT dblink_connect(''LINK1'',''host='||current_host||' port=5432 dbname=postgres'||
	                                         ' user='||current_s_name||' password='||current_s_pass|| ' '')';



--------------------------------------------------------------------
--GET pg_stat_activity stats
	INSERT INTO activity_hist.history_pg_stat_activity
	(
		SELECT * FROM dblink('LINK1',
			'SELECT 
			now() , 
			datid             , 
			datname           ,
			pid               ,
			usesysid              ,
			usename              ,
			application_name     ,
			client_addr          ,
			client_hostname      ,
			client_port       ,
			backend_start         ,
			xact_start            ,
			query_start           ,
			state_change          ,
			wait_event_type    ,                     
			wait_event         ,                   
			state              ,                  
			backend_xid         ,                 
			backend_xmin        ,                
			query              ,               
			backend_type   			
		FROM pg_stat_activity
		') 
		AS t (
		    timepoint 		  timestamp without time zone ,			
			datid             oid  , 
			datname           name ,
			pid               integer,
			usesysid          oid    ,
			usename           name   ,
			application_name  text   ,
			client_addr       inet   ,
			client_hostname   text   ,
			client_port       integer,
			backend_start     timestamp with time zone ,
			xact_start        timestamp with time zone ,
			query_start       timestamp with time zone ,
			state_change      timestamp with time zone ,
			wait_event_type   text ,                     
			wait_event        text ,                   
			state             text ,                  
			backend_xid       xid  ,                 
			backend_xmin      xid  ,                
			query             text ,               
			backend_type      text 			
		)
	);

---------------------------------------	
--ACTIVITY_HIST.HISTORY_LOCKING	
	INSERT INTO activity_hist.history_locking
	(
		SELECT * FROM dblink('LINK1',
			'SELECT 
			now() , 
			lock.locktype,
			lock.relation,
			lock.mode,
			lock.transactionid as tid,
			lock.virtualtransaction as vtid,
			lock.pid,
			pg_blocking_pids(lock.pid), 
			lock.granted
			FROM 	pg_catalog.pg_locks lock LEFT JOIN pg_catalog.pg_database db ON db.oid = lock.database
			WHERE NOT lock.pid = pg_backend_pid()	
		') 
		AS t (
			timepoint timestamp without time zone ,
			locktype text ,
			relation oid , 
			mode text ,
			tid xid ,
			vtid text ,
			pid integer ,
			blocking_pids integer[] ,
			granted boolean
		)
	);
	PERFORM dblink_disconnect('LINK1');
	
	RETURN TRUE ;
END
$$ LANGUAGE plpgsql;

Ho bokella linepe tsa pono, ho sebelisoa ts'ebeletso ea systemd le lingoloa tse peli:

pg_current_activity.service

# /etc/systemd/system/pg_current_activity.service
[Unit]
Description=Collect history of pg_stat_activity , pg_locks 
Wants=pg_current_activity.timer

[Service]
Type=forking
StartLimitIntervalSec=0
ExecStart=/home/postgres/pgutils/demon/get_current_activity.sh 10.124.70.40 postgres postgres

[Install]
WantedBy=multi-user.target

pg_current_activity.timer

# /etc/systemd/system/pg_current_activity.timer
[Unit]
Description=Run pg_current_activity.sh every 1 second
Requires=pg_current_activity.service

[Timer]
Unit=pg_current_activity.service
OnCalendar=*:*:0/1
AccuracySec=1

[Install]
WantedBy=timers.target

Fana ka litokelo ho lingoliloeng:
# chmod 755 pg_current_activity.timer
# chmod 755 pg_current_activity.service

Ha re qale tšebeletso:
# systemctl daemon-reload
# systemctl qala pg_current_activity.service

Kahoo, histori ea maikutlo e bokelloa ka mokhoa oa li-snapshots tsa bobeli ka bobeli. Ha e le hantle, haeba ntho e 'ngoe le e' ngoe e sala e le joalo, litafole li tla eketseha ka potlako ka boholo 'me mosebetsi o fokolang kapa o fokolang o ke ke oa khoneha.

Hoa hlokahala ho hlophisa polokelo ea data.

3. Ho boloka histori

Bakeng sa ho boloka, ho sebelisoa li-archive tsa litafole tse arohaneng.

Li-partitions tse ncha li bōptjoa hora e 'ngoe le e' ngoe, ha data ea khale e tlosoa litafoleng tsa histori *, kahoo boholo ba litafole tsa histori * ha bo fetohe haholo 'me lebelo la ho kenya ha le fokotsehe ka nako.

Theho ea likarolo tse ncha e etsoa ke plpgsql function activity_hist.archive_current_activity. Algorithm ea mosebetsi e bonolo haholo (ho sebelisa mohlala oa karolo bakeng sa tafole ea archive_pg_stat_activity).

Theha le ho tlatsa karolo e ncha

EXECUTE format(
'CREATE TABLE ' || partition_name || 
' PARTITION OF activity_hist.archive_pg_stat_activity FOR VALUES FROM ( %L ) TO ( %L ) ' , 
to_char(date_trunc('year', partition_min_range ),'YYYY')||'-'||
to_char(date_trunc('month', partition_min_range ),'MM')||'-'||
to_char(date_trunc('day', partition_min_range ),'DD')||' '||
to_char(date_trunc('hour', partition_min_range ),'HH24')||':00', 
to_char(date_trunc('year', partition_max_range ),'YYYY')||'-'||
to_char(date_trunc('month', partition_max_range ),'MM')||'-'||
to_char(date_trunc('day', partition_max_range ),'DD')||' '||
to_char(date_trunc('hour', partition_max_range ),'HH24')||':00'
);

INSERT INTO activity_hist.archive_pg_stat_activity
(
	SELECT 	* 
	FROM 	activity_hist.history_pg_stat_activity
	WHERE 	timepoint BETWEEN partition_min_range AND partition_max_range 		
);

Ho theha li-index

EXECUTE format	(
'CREATE INDEX '||index_name||
' ON '||partition_name||' ( wait_event_type , backend_type , timepoint )' 
);

EXECUTE format	('CREATE INDEX '||index_name||
' ON '||partition_name||' ( wait_event_type , backend_type , timepoint , queryid )' 
);

E tlosa lintlha tsa khale ho tloha ho history_pg_stat_activity table

DELETE 
FROM 	activity_hist.history_pg_stat_activity
WHERE 	timepoint < partition_max_range;

Ha e le hantle, nako le nako, likarolo tsa khale li tlosoa e le tse sa hlokahaleng.

Litlaleho tsa motheo

Ha e le hantle, ke hobane’ng ha see sohle se etsoa? Ho fumana litlaleho tse hopotsang Oracle's AWR ka mokhoa o hlakileng.

Ho bohlokoa ho eketsa hore ho fumana litlaleho, o hloka ho theha khokahano lipakeng tsa pg_stat_activity le pg_stat_statements maikutlo. Litafole li hokahantsoe ka ho kenyelletsa kholomo ea 'queryid' ho litafole tsa 'history_pg_stat_activity', 'archive_pg_stat_activity'. Mokhoa oa ho eketsa boleng ba kholomo o feta boholo ba sengoloa sena mme o hlalositsoe mona - pg_stat_statements + pg_stat_activity + loq_query = pg_ash? .

KAOFELA EA NAKO EA CPU EA LIPOTSO

Kopo :

WITH hist AS
(
SELECT 
	aa.query ,aa.queryid ,			
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.archive_pg_stat_activity aa
WHERE timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND  pg_stat_history_end+(current_hour_diff * interval '1 hour')  AND backend_type = 'client backend' AND datname != 'postgres' AND	( aa.wait_event_type IS NULL  ) ANDaa.state = 'active'
GROUP BY aa.wait_event_type , aa.wait_event , aa.query ,aa.queryid		
UNION 
SELECT 
	ha.query ,ha.queryid,
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.history_pg_stat_activity_for_reports ha
WHERE timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour')  AND 	backend_type = 'client backend' AND datname != 'postgres' AND ( ha.wait_event_type IS NULL  )AND ha.state = 'active'
GROUP BY ha.wait_event_type , ha.wait_event , ha.query ,ha.queryid		
)
SELECT 	query , queryid , SUM( duration ) as duration 
FROM hist
GROUP BY  query , queryid 
ORDER BY 3 DESC

Mohlala:

-------------------------------------------------------------------
| TOTAL CPU TIME FOR QUERIES : 07:47:36
+----+----------------------------------------+--------------------
|   #|                                 queryid|            duration
+----+----------------------------------------+--------------------
|   1|                      389015618226997618|            04:28:58
|   2|                                        |            01:07:29
|   3|                     1237430309438971376|            00:59:38
|   4|                     4710212362688288619|            00:50:48
|   5|                       28942442626229688|            00:15:50
|   6|                     9150846928388977274|            00:04:46
|   7|                    -6572922443698419129|            00:00:06
|   8|                                        |            00:00:01
+----+----------------------------------------+--------------------

NAKO E FELELE EA HO EMETSA BAKENG SA LIPOTSO

Kopo :

WITH hist AS
(
SELECT 
	aa.query ,aa.queryid ,			
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.archive_pg_stat_activity aa
WHERE timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour')  AND 
	backend_type = 'client backend' AND datname != 'postgres' AND
	( aa.wait_event_type IS NOT NULL  ) 
GROUP BY aa.wait_event_type , aa.wait_event , aa.query ,aa.queryid		
UNION 
SELECT 
	ha.query ,ha.queryid,
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.history_pg_stat_activity_for_reports ha
WHERE timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour')  AND 
	backend_type = 'client backend' AND datname != 'postgres' AND				
	( ha.wait_event_type IS NOT NULL  )
GROUP BY ha.wait_event_type , ha.wait_event , ha.query ,ha.queryid		
)
SELECT 	query , queryid , SUM( duration ) as duration 
FROM hist
GROUP BY  query , queryid 
ORDER BY 3 DESC

Mohlala:

-------------------------------------------------------------------
| TOTAL WAITINGS TIME FOR QUERIES : 21:55:04
+----+----------------------------------------+--------------------
|   #|                                 queryid|            duration
+----+----------------------------------------+--------------------
|   1|                      389015618226997618|            16:19:05
|   2|                                        |            03:47:04
|   3|                     8085340880788646241|            00:40:20
|   4|                     4710212362688288619|            00:13:35
|   5|                     9150846928388977274|            00:12:25
|   6|                       28942442626229688|            00:11:32
|   7|                     1237430309438971376|            00:09:45
|   8|                     2649515222348904837|            00:09:37
|   9|                                        |            00:03:45
|  10|                     3167065002719415275|            00:02:20
|  11|                     5731212217001535134|            00:02:13
|  12|                     8304755792398128062|            00:01:31
|  13|                     2649515222348904837|            00:00:59
|  14|                     2649515222348904837|            00:00:22
|  15|                                        |            00:00:12
|  16|                     3422818749220588372|            00:00:08
|  17|                    -5730801771815999400|            00:00:03
|  18|                    -1473395109729441239|            00:00:02
|  19|                     2404820632950544954|            00:00:02
|  20|                    -6572922443698419129|            00:00:02
|  21|                     2369289265278398647|            00:00:01
|  22|                      180077086776069052|            00:00:01
+----+----------------------------------------+--------------------

LETELA LIPOTSO

Likopo:

WITH hist AS
(
SELECT 
	aa.wait_event_type , aa.wait_event 
FROM 	activity_hist.archive_pg_stat_activity aa
WHERE timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND 
	backend_type = 'client backend' AND datname != 'postgres' AND
	aa.wait_event IS NOT NULL 
GROUP BY aa.wait_event_type , aa.wait_event
UNION 
SELECT 
	ha.wait_event_type , ha.wait_event 
FROM 	activity_hist.history_pg_stat_activity_for_reports ha
WHERE timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND 
	backend_type = 'client backend' AND datname != 'postgres' AND
	ha.wait_event IS NOT NULL 
GROUP BY ha.wait_event_type , ha.wait_event		
)
SELECT 	wait_event_type , wait_event 
FROM hist
GROUP BY wait_event_type , wait_event
ORDER BY 1 ASC,2 ASC

----------------------------------------------------------------------

WITH hist AS
(
SELECT 
	aa.wait_event_type , aa.wait_event , aa.query ,aa.queryid ,			
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.archive_pg_stat_activity aa
WHERE timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND 
	backend_type = 'client backend' AND datname != 'postgres' AND
	( aa.wait_event_type = waitings_stat_rec.wait_event_type AND aa.wait_event = waitings_stat_rec.wait_event )
GROUP BY aa.wait_event_type , aa.wait_event , aa.query ,aa.queryid		
UNION 
SELECT 
	ha.wait_event_type , ha.wait_event , ha.query ,ha.queryid,
	count(*) * interval '1 second' AS duration 
FROM 	activity_hist.history_pg_stat_activity_for_reports ha
WHERE timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND 
	backend_type = 'client backend' AND datname != 'postgres' AND				
	( ha.wait_event_type = waitings_stat_rec.wait_event_type AND ha.wait_event = waitings_stat_rec.wait_event )
GROUP BY ha.wait_event_type , ha.wait_event , ha.query ,ha.queryid		
)
SELECT 	query , queryid , SUM( duration ) as duration 
FROM hist
GROUP BY  query , queryid 
ORDER BY 3 DESC

Mohlala:

------------------------------------------------
| WAITINGS FOR QUERIES
+-----------------------------------------------
|                      wait_event_type = Client|
|                       wait_event = ClientRead|
|                        Total time  = 00:46:56|
------------------------------------------------
|    #|             queryid|            duration
+-----+--------------------+--------------------
|    1| 8085340880788646241|            00:40:20
|    2|                    |            00:03:45
|    3| 5731212217001535134|            00:01:53
|    4|                    |            00:00:12
|    5| 9150846928388977274|            00:00:09
|    6| 3422818749220588372|            00:00:08
|    7| 1237430309438971376|            00:00:06
|    8|   28942442626229688|            00:00:05
|    9| 4710212362688288619|            00:00:05
|   10|-5730801771815999400|            00:00:03
|   11| 8304755792398128062|            00:00:02
|   12|-6572922443698419129|            00:00:02
|   13|-1473395109729441239|            00:00:02
|   14| 2404820632950544954|            00:00:02
|   15|  180077086776069052|            00:00:01
|   16| 2369289265278398647|            00:00:01

+-----------------------------------------------
|                          wait_event_type = IO|
|                      wait_event = BufFileRead|
|                        Total time  = 00:00:38|
------------------------------------------------
|    #|             queryid|            duration
+-----+--------------------+--------------------
|    1|   28942442626229688|            00:00:38

+-----------------------------------------------

TELETSO MATS'EBETSO

Kopo:

SELECT 
MIN(date_trunc('second',timepoint)) AS started , 
	count(*) * interval '1 second' as duration ,
	pid , blocking_pids , relation , mode , locktype 	 
FROM 
	activity_hist.archive_locking al 
WHERE 
	timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND
	NOT granted AND 
	locktype = 'relation' 
GROUP BY pid , blocking_pids , relation , mode , locktype			
UNION
SELECT 
	MIN(date_trunc('second',timepoint)) AS started , 
	count(*) * interval '1 second' as duration ,
	pid , blocking_pids , relation , mode , locktype
FROM 
	activity_hist.history_locking 
WHERE 
	timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND
	NOT granted AND 
	locktype = 'relation' 
GROUP BY pid , blocking_pids , relation , mode , locktype			
ORDER BY 1

Mohlala:

------------------------------------------------- ------------------------------------------------- ---------------------------------- | HISTORI EA LITS'EBETSO TSE NTSOANG +-----+----------------------------------------- --------+-------------------+----- ---------------- +------------------- | #| pid| qadile| nako| blocking_pids| kamano| mokhoa| mofuta oa senotlolo +----------+---------------------------- +--------- -----------+------------------- -------------------- --------------- | 1| 26224 | 2019-09-02 19:32:16| 00:01:45 | {26211}| 16541 | AccessShareLock| kamano | 2 | 26390| 2019-09-02 19:34:03| 00:00:53 | {26211}| 16541 | AccessShareLock| kamano | 3 | 26391| 2019-09-02 19:34:03| 00:00:53 | {26211}| 16541 | AccessShareLock| kamano | 4 | 26531| 2019-09-02 19:35:27| 00:00:12 | {26211}| 16541 | AccessShareLock| kamano | 5 | 27284 | 2019-09-02 19:44:02| 00:00:19 | {27276}| 16541 | AccessShareLock| kamano | 6 | 27283 | 2019-09-02 19:44:02| 00:00:19 | {27276}| 16541 | AccessShareLock| kamano | 7 | 27286| 2019-09-02 19:44:02| 00:00:19 | {27276}| 16541 | AccessShareLock| kamano | 8 | 27423 | 2019-09-02 19:45:24| 00:00:12 | {27394}| 16541 | AccessShareLock| kamano | 9 | 27648| 2019-09-02 19:48:06| 00:00:20 | {27647}| 16541 | AccessShareLock| kamano | 10| 27650| 2019-09-02 19:48:06| 00:00:20 | {27647}| 16541 | AccessShareLock| kamano | 11 | 27735 | 2019-09-02 19:49:08| 00:00:06 | {27650}| 16541 | AccessExclusiveLock| kamano | 12 | 28380| 2019-09-02 19:56:03| 00:01:56 | {28379}| 16541 | AccessShareLock| kamano | 13 | 28379 | 2019-09-02 19:56:03| 00:00:01 | 28377 | 16541 | AccessExclusiveLock| kamano | | | | | 28376| |

THIBELLA MATS'EBETSO

Likopo:

SELECT 
blocking_pids 
FROM 
	activity_hist.archive_locking al 
WHERE 
	timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND
	NOT granted AND 
	locktype = 'relation' 
GROUP BY blocking_pids 		
UNION
SELECT 
	blocking_pids 
FROM 
	activity_hist.history_locking 
WHERE 
	timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') AND
	NOT granted AND 
	locktype = 'relation' 
GROUP BY blocking_pids 		
ORDER BY 1

---------------------------------------------------------------

SELECT 
	pid , usename , application_name , datname ,
	MIN(date_trunc('second',timepoint)) as started , 
	count(*) * interval '1 second' as duration ,		 
	state , 
	query
				FROM  	activity_hist.archive_pg_stat_activity
				WHERE 	pid= current_pid AND 
						timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') 						 
				GROUP BY pid , usename , application_name , 
						datname , 
						state_change, 
						state , 
						query 
				UNION
				SELECT 
					pid , usename , application_name , datname ,
					MIN(date_trunc('second',timepoint)) as started , 
					count(*) * interval '1 second' as duration ,		 
					state , 
					query
				FROM  	activity_hist.history_pg_stat_activity_for_reports
				WHERE 	pid= current_pid AND 
						timepoint BETWEEN pg_stat_history_begin+(current_hour_diff * interval '1 hour') AND pg_stat_history_end+(current_hour_diff * interval '1 hour') 						 
				GROUP BY pid , usename , application_name , 
						datname , 
						state_change, 
						state , 
						query 
				ORDER BY 5 , 1

Mohlala:

------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ---------------------------------------------------------------------------------------------------------------- --------------------------------------------------- ------+------------------------------------------ - -------+---------------------------------------- | #| pid| usename| kopo_lebitso| lebitso | qadile| nako| naha| potso +----------+---------+----------+-----+ --------- -------------------------------------------------- -------------------------------------------- ------- ----------------- | 1| 26211| seseng| psql| tdb1| 2019-09-02 19:31:54| 00:00:04 | e se nang letho| | 2 | 26211| seseng| psql| tdb1| 2019-09-02 19:31:58| 00:00:06 | e sa sebetseng khoebong| QALA; | 3 | 26211| seseng| psql| tdb1| 2019-09-02 19:32:16| 00:01:45 | e sa sebetseng khoebong| lock table wafer_data; | 4 | 26211| seseng| psql| tdb1| 2019-09-02 19:35:54| 00:01:23 | e se nang letho| itlama; | 5 | 26211| seseng| psql| tdb1| 2019-09-02 19:38:46| 00:00:02 | e sa sebetseng khoebong| QALA; | 6 | 26211| seseng| psql| tdb1| 2019-09-02 19:38:54| 00:00:08 | e sa sebetseng khoebong| lock table wafer_data; | 7 | 26211| seseng| psql| tdb1| 2019-09-02 19:39:08| 00:42:42 | e se nang letho| itlama; | 8 | 26211| seseng| psql| tdb1| 2019-09-03 07:12:07| 00:00:52 | e sebetsang| khetha test_del();

Tsoelo-pele.

Lipotso tsa mantlha tse bontšitsoeng le litlaleho tse hlahisitsoeng li se li ntse li nolofatsa bophelo ha ho hlahlojoa liketsahalo tsa ts'ebetso.
Ho ipapisitsoe le lipotso tsa mantlha, u ka fumana tlaleho e ts'oanang hantle le Oracle's AWR.
Kakaretso ea mohlala oa tlaleho

+------------------------------------------------- ------------------------------------ | TLALEHO E KOPANENG EA KETSAHALO LE HO LETA.

E tla ntšetsoa pele. E latelang moleng ke ho theha nalane ea senotlolo (pg_stat_locks), tlhaloso e qaqileng haholoanyane ea mokhoa oa ho tlatsa litafole.

Source: www.habr.com

Eketsa ka tlhaloso