forked from ktaranov/sqlserver-kit
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathSQL Server 2017 Diagnostic Information Queries.sql
2023 lines (1595 loc) · 92.4 KB
/
SQL Server 2017 Diagnostic Information Queries.sql
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
-- SQL Server 2017 Diagnostic Information Queries
-- Glenn Berry
-- Last Modified: November 4, 2019
-- https://www.sqlskills.com/blogs/glenn/
-- http://sqlserverperformance.wordpress.com/
-- Twitter: GlennAlanBerry
-- Please listen to my Pluralsight courses
-- https://www.pluralsight.com/author/glenn-berry
-- If you want to find all of our SQLskills SQL101 blog posts, check out https://bit.ly/2qLwfXW
-- Please make sure you are using the correct version of these diagnostic queries for your version of SQL Server
-- If you like PowerShell, there is a very useful community solution for running these queries in an automated fashion
-- https://dbatools.io/
-- Invoke-DbaDiagnosticQuery
-- https://dbatools.io/functions/invoke-dbadiagnosticquery/
--******************************************************************************
--* Copyright (C) 2019 Glenn Berry, SQLskills.com
--* All rights reserved.
--*
--* For more scripts and sample code, check out
--* https://www.sqlskills.com/blogs/glenn
--*
--* You may alter this code for your own *non-commercial* purposes. You may
--* republish altered code as long as you include this copyright and give due credit.
--*
--*
--* THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF
--* ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
--* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
--* PARTICULAR PURPOSE.
--*
--******************************************************************************
-- Check the major product version to see if it is SQL Server 2017 CTP 1 or greater
IF NOT EXISTS (SELECT * WHERE CONVERT(varchar(128), SERVERPROPERTY('ProductVersion')) LIKE '14%')
BEGIN
DECLARE @ProductVersion varchar(128) = CONVERT(varchar(128), SERVERPROPERTY('ProductVersion'));
RAISERROR ('Script does not match the ProductVersion [%s] of this instance. Many of these queries may not work on this version.' , 18 , 16 , @ProductVersion);
END
ELSE
PRINT N'You have the correct major version of SQL Server for this diagnostic information script';
-- Instance level queries *******************************
-- SQL and OS Version information for current instance (Query 1) (Version Info)
SELECT @@SERVERNAME AS [Server Name], @@VERSION AS [SQL Server and OS Version Info];
------
-- SQL Server 2017 Builds
-- Build Description Release Date URL to KB Article
-- 14.0.1.246 CTP 1.0 11/30/2016
-- 14.0.100.187 CTP 1.1 12/16/2016
-- 14.0.200.24 CTP 1.2 1/19/2017
-- 14.0.304.138 CTP 1.3 2/17/2017
-- 14.0.405.198 CTP 1.4 3/20/2017
-- 14.0.500.272 CTP 2.0 4/19/2017
-- 14.0.600.250 CTP 2.1 5/17/2017
-- 14.0.800.90 RC1 7/17/2017
-- 14.0.900.75 RC2 8/2/2017
-- 14.0.1000.169 RTM 10/2/2017
-- 14.0.3006.16 CU1 10/24/2017 https://support.microsoft.com/en-us/help/4038634
-- 14.0.3008.27 CU2 11/28/2017 https://support.microsoft.com/en-us/help/4052574
-- 14.0.3015.40 CU3 1/4/2018 https://support.microsoft.com/en-us/help/4052987
-- 14.0.3022.28 CU4 2/20/2018 https://support.microsoft.com/en-us/help/4056498
-- 14.0.3023.8 CU5 3/20/2018 https://support.microsoft.com/en-us/help/4092643
-- 14.0.3025.34 CU6 4/17/2018 https://support.microsoft.com/en-us/help/4101464
-- 14.0.3026.27 CU7 5/23/2018 https://support.microsoft.com/en-us/help/4229789
-- 14.0.3029.16 CU8 6/19/2018 https://support.microsoft.com/en-us/help/4338363
-- 14.0.3030.27 CU9 7/19/2018 https://support.microsoft.com/en-us/help/4341265
-- 14.0.3035.2 CU9 + Security Update 8/13/2018 https://www.microsoft.com/en-us/download/details.aspx?id=57263
-- 14.0.3037.1 CU10 8/27/2018 https://support.microsoft.com/en-us/help/4342123/cumulative-update-10-for-sql-server-2017
-- 14.0.3038.14 CU11 9/20/2018 https://support.microsoft.com/en-us/help/4462262
-- 14.0.3045.24 CU12 10/23/2018 https://support.microsoft.com/en-us/help/4464082/cumulative-update-12-for-sql-server-2017
-- 14.0.3048.4 CU13 12/18/2018 https://support.microsoft.com/en-us/help/4466404/cumulative-update-13-for-sql-server-2017
-- 14.0.3076.1 CU14 3/25/2019 https://support.microsoft.com/en-us/help/4484710/cumulative-update-14-for-sql-server-2017
-- 14.0.3103.1 CU14 + Security Update 5/14/2019 https://support.microsoft.com/en-us/help/4494352/security-update-for-sql-server-2017-cu-14-gdr-may-14-2019
-- 14.0.3162.1 CU15 5/23/2019 https://support.microsoft.com/en-us/help/4498951/cumulative-update-15-for-sql-server-2017
-- 14.0.3192.2 CU15 + Security Update 7/9/2019 https://support.microsoft.com/en-us/help/4505225/security-update-for-sql-server-2017-cu15-gdr-july-9-2019
-- 14.0.3223.3 CU16 8/1/2019 https://support.microsoft.com/en-us/help/4508218/cumulative-update-16-for-sql-server-2017
-- 14.0.3238.1 CU17 10/8/2019 https://support.microsoft.com/en-us/help/4515579/cumulative-update-17-for-sql-server-2017
-- How to determine the version, edition and update level of SQL Server and its components
-- https://bit.ly/2oAjKgW
-- SQL Server 2017 build versions
-- https://bit.ly/2FLY88I
-- Recommended updates and configuration options for SQL Server 2017 and 2016 with high-performance workloads
-- https://bit.ly/2JsReue
-- Performance and Stability Fixes in SQL Server 2017 CU Builds
-- https://bit.ly/2GV3CNM
-- What's New in SQL Server 2017 (Database Engine)
-- https://bit.ly/2HjSeyQ
-- What's New in SQL Server 2017
-- https://bit.ly/2saQ4Yh
-- Announcing the Modern Servicing Model for SQL Server
-- https://bit.ly/2KtJ8SS
-- SQL Server Service Packs are discontinued starting from SQL Server 2017
-- https://bit.ly/2GTkbgt
-- Update Center for Microsoft SQL Server
-- https://bit.ly/2pZptuQ
-- Download SQL Server Management Studio (SSMS)
-- https://bit.ly/1OcupT9
-- Download and install Azure Data Studio
-- https://bit.ly/2vgke1A
-- SQL Server 2017 Configuration Manager is SQLServerManager14.msc
-- Get socket, physical core and logical core count from the SQL Server Error log. (Query 2) (Core Counts)
-- This query might take a few seconds depending on the size of your error log
EXEC sys.xp_readerrorlog 0, 1, N'detected', N'socket';
------
-- This can help you determine the exact core counts used by SQL Server and whether HT is enabled or not
-- It can also help you confirm your SQL Server licensing model
-- Be on the lookout for this message "using 40 logical processors based on SQL Server licensing"
-- (when you have more than 40 logical cores) which means grandfathered Server/CAL licensing
-- This query will return no results if your error log has been recycled since the instance was last started
-- Get selected server properties (Query 3) (Server Properties)
SELECT SERVERPROPERTY('MachineName') AS [MachineName],
SERVERPROPERTY('ServerName') AS [ServerName],
SERVERPROPERTY('InstanceName') AS [Instance],
SERVERPROPERTY('IsClustered') AS [IsClustered],
SERVERPROPERTY('ComputerNamePhysicalNetBIOS') AS [ComputerNamePhysicalNetBIOS],
SERVERPROPERTY('Edition') AS [Edition],
SERVERPROPERTY('ProductLevel') AS [ProductLevel], -- What servicing branch (RTM/SP/CU)
SERVERPROPERTY('ProductUpdateLevel') AS [ProductUpdateLevel], -- Within a servicing branch, what CU# is applied
SERVERPROPERTY('ProductVersion') AS [ProductVersion],
SERVERPROPERTY('ProductMajorVersion') AS [ProductMajorVersion],
SERVERPROPERTY('ProductMinorVersion') AS [ProductMinorVersion],
SERVERPROPERTY('ProductBuild') AS [ProductBuild],
SERVERPROPERTY('ProductBuildType') AS [ProductBuildType], -- Is this a GDR or OD hotfix (NULL if on a CU build)
SERVERPROPERTY('ProductUpdateReference') AS [ProductUpdateReference], -- KB article number that is applicable for this build
SERVERPROPERTY('ProcessID') AS [ProcessID],
SERVERPROPERTY('Collation') AS [Collation],
SERVERPROPERTY('IsFullTextInstalled') AS [IsFullTextInstalled],
SERVERPROPERTY('IsIntegratedSecurityOnly') AS [IsIntegratedSecurityOnly],
SERVERPROPERTY('FilestreamConfiguredLevel') AS [FilestreamConfiguredLevel],
SERVERPROPERTY('IsHadrEnabled') AS [IsHadrEnabled],
SERVERPROPERTY('HadrManagerStatus') AS [HadrManagerStatus],
SERVERPROPERTY('InstanceDefaultDataPath') AS [InstanceDefaultDataPath],
SERVERPROPERTY('InstanceDefaultLogPath') AS [InstanceDefaultLogPath],
SERVERPROPERTY('BuildClrVersion') AS [Build CLR Version],
SERVERPROPERTY('IsXTPSupported') AS [IsXTPSupported],
SERVERPROPERTY('IsPolybaseInstalled') AS [IsPolybaseInstalled], -- New for SQL Server 2016
SERVERPROPERTY('IsAdvancedAnalyticsInstalled') AS [IsRServicesInstalled]; -- New for SQL Server 2016
------
-- This gives you a lot of useful information about your instance of SQL Server,
-- such as the ProcessID for SQL Server and your collation
-- Note: Some columns will be NULL on older SQL Server builds
-- SERVERPROPERTY (Transact-SQL)
-- https://bit.ly/2eeaXeI
-- Get instance-level configuration values for instance (Query 4) (Configuration Values)
SELECT name, value, value_in_use, minimum, maximum, [description], is_dynamic, is_advanced
FROM sys.configurations WITH (NOLOCK)
ORDER BY name OPTION (RECOMPILE);
------
-- Focus on these settings:
-- automatic soft-NUMA disabled (should be 0 in most cases)
-- backup checksum default (should be 1)
-- backup compression default (should be 1 in most cases)
-- clr enabled (only enable if it is needed)
-- cost threshold for parallelism (depends on your workload)
-- lightweight pooling (should be zero)
-- max degree of parallelism (depends on your workload and hardware)
-- max server memory (MB) (set to an appropriate value, not the default)
-- optimize for ad hoc workloads (should be 1)
-- priority boost (should be zero)
-- remote admin connections (should be 1)
-- New configuration options for SQL Server 2017
-- clr strict security is new in SQL Server 2017, and is enabled by default
-- sys.configurations (Transact-SQL)
-- https://bit.ly/2HsyDZI
-- Returns a list of all global trace flags that are enabled (Query 5) (Global Trace Flags)
DBCC TRACESTATUS (-1);
------
-- If no global trace flags are enabled, no results will be returned.
-- It is very useful to know what global trace flags are currently enabled as part of the diagnostic process.
-- Common trace flags that should be enabled in most cases
-- TF 460 - Improvement: Optional replacement for "String or binary data would be truncated" message with extended information in SQL Server 2017
-- https://bit.ly/2sboMli (added in CU12)
-- TF 3226 - Supresses logging of successful database backup messages to the SQL Server Error Log
-- https://bit.ly/2p6MTjS
-- TF 6534 - Enables use of native code to improve performance with spatial data
-- https://bit.ly/2HrQUpU
-- TF 7745 - Prevents Query Store data from being written to disk in case of a failover or shutdown command
-- https://bit.ly/2GU69Km
-- TF 7752 - Enables asynchronous load of Query Store
-- This allows a database to become online and queries to be executed before the Query Store has been fully recovered
-- The behavior of TF 1117, 1118 are enabled for tempdb in SQL Server 2016 by default
-- SQL 2016 It Just Runs Faster: -T1117 and -T1118 changes for TEMPDB and user databases
-- https://bit.ly/2lbNWxK
-- The behavior of TF 2371 is enabled by default in SQL Server 2016 and newer (in compat level 130 and higher)
-- DBCC TRACEON - Trace Flags (Transact-SQL)
-- https://bit.ly/2FuSvPg
-- Recommended updates and configuration options for SQL Server 2017 and 2016 with high-performance workloads
-- https://bit.ly/2VVRGTY
-- SQL Server Process Address space info (Query 6) (Process Memory)
-- (shows whether locked pages is enabled, among other things)
SELECT physical_memory_in_use_kb/1024 AS [SQL Server Memory Usage (MB)],
locked_page_allocations_kb/1024 AS [SQL Server Locked Pages Allocation (MB)],
large_page_allocations_kb/1024 AS [SQL Server Large Pages Allocation (MB)],
page_fault_count, memory_utilization_percentage, available_commit_limit_kb,
process_physical_memory_low, process_virtual_memory_low
FROM sys.dm_os_process_memory WITH (NOLOCK) OPTION (RECOMPILE);
------
-- You want to see 0 for process_physical_memory_low
-- You want to see 0 for process_virtual_memory_low
-- This indicates that you are not under internal memory pressure
-- If locked_page_allocations_kb > 0, then LPIM is enabled
-- How to enable the "locked pages" feature in SQL Server 2012
-- https://bit.ly/2F5UjOA
-- Memory Management Architecture Guide
-- https://bit.ly/2JKkadC
-- SQL Server Services information (Query 7) (SQL Server Services Info)
SELECT servicename, process_id, startup_type_desc, status_desc,
last_startup_time, service_account, is_clustered, cluster_nodename, [filename],
instant_file_initialization_enabled
FROM sys.dm_server_services WITH (NOLOCK) OPTION (RECOMPILE);
------
-- Tells you the account being used for the SQL Server Service and the SQL Agent Service
-- Shows the process_id, when they were last started, and their current status
-- Also shows whether you are running on a failover cluster instance, and what node you are running on
-- Also shows whether IFI is enabled
-- sys.dm_server_services (Transact-SQL)
-- https://bit.ly/2oKa1Un
-- Last backup information by database (Query 8) (Last Backup By Database)
SELECT ISNULL(d.[name], bs.[database_name]) AS [Database], d.recovery_model_desc AS [Recovery Model],
d.log_reuse_wait_desc AS [Log Reuse Wait Desc],
MAX(CASE WHEN [type] = 'D' THEN bs.backup_finish_date ELSE NULL END) AS [Last Full Backup],
MAX(CASE WHEN [type] = 'I' THEN bs.backup_finish_date ELSE NULL END) AS [Last Differential Backup],
MAX(CASE WHEN [type] = 'L' THEN bs.backup_finish_date ELSE NULL END) AS [Last Log Backup]
FROM sys.databases AS d WITH (NOLOCK)
LEFT OUTER JOIN msdb.dbo.backupset AS bs WITH (NOLOCK)
ON bs.[database_name] = d.[name]
AND bs.backup_finish_date > GETDATE()- 30
WHERE d.name <> N'tempdb'
GROUP BY ISNULL(d.[name], bs.[database_name]), d.recovery_model_desc, d.log_reuse_wait_desc, d.[name]
ORDER BY d.recovery_model_desc, d.[name] OPTION (RECOMPILE);
------
-- This helps you spot runaway transaction logs and other issues with your backup schedule
-- Get SQL Server Agent jobs and Category information (Query 9) (SQL Server Agent Jobs)
SELECT sj.name AS [Job Name], sj.[description] AS [Job Description], SUSER_SNAME(sj.owner_sid) AS [Job Owner],
sj.date_created AS [Date Created], sj.[enabled] AS [Job Enabled],
sj.notify_email_operator_id, sj.notify_level_email, sc.name AS [CategoryName],
s.[enabled] AS [Sched Enabled], js.next_run_date, js.next_run_time
FROM msdb.dbo.sysjobs AS sj WITH (NOLOCK)
INNER JOIN msdb.dbo.syscategories AS sc WITH (NOLOCK)
ON sj.category_id = sc.category_id
LEFT OUTER JOIN msdb.dbo.sysjobschedules AS js WITH (NOLOCK)
ON sj.job_id = js.job_id
LEFT OUTER JOIN msdb.dbo.sysschedules AS s WITH (NOLOCK)
ON js.schedule_id = s.schedule_id
ORDER BY sj.name OPTION (RECOMPILE);
------
-- Gives you some basic information about your SQL Server Agent jobs, who owns them and how they are configured
-- Look for Agent jobs that are not owned by sa
-- Look for jobs that have a notify_email_operator_id set to 0 (meaning no operator)
-- Look for jobs that have a notify_level_email set to 0 (meaning no e-mail is ever sent)
--
-- MSDN sysjobs documentation
-- https://bit.ly/2paDEOP
-- SQL Server Maintenance Solution
-- https://bit.ly/1pgchQu
-- Get SQL Server Agent Alert Information (Query 10) (SQL Server Agent Alerts)
SELECT name, event_source, message_id, severity, [enabled], has_notification,
delay_between_responses, occurrence_count, last_occurrence_date, last_occurrence_time
FROM msdb.dbo.sysalerts WITH (NOLOCK)
ORDER BY name OPTION (RECOMPILE);
------
-- Gives you some basic information about your SQL Server Agent Alerts
-- (which are different from SQL Server Agent jobs)
-- Read more about Agent Alerts here: https://bit.ly/2Giz0Xf
-- Host information (Query 11) (Host Info)
SELECT host_platform, host_distribution, host_release,
host_service_pack_level, host_sku, os_language_version
FROM sys.dm_os_host_info WITH (NOLOCK) OPTION (RECOMPILE);
------
-- host_release codes (only valid for Windows)
-- 10.0 is either Windows 10 or Windows Server 2016
-- 6.3 is either Windows 8.1 or Windows Server 2012 R2
-- 6.2 is either Windows 8 or Windows Server 2012
-- host_sku codes (only valid for Windows)
-- 4 is Enterprise Edition
-- 7 is Standard Server Edition
-- 8 is Datacenter Server Edition
-- 10 is Enterprise Server Edition
-- 48 is Professional Edition
-- 161 is Pro for Workstations
-- 1033 for os_language_version is US-English
-- SQL Server 2017 requires Windows Server 2012 or newer
-- Hardware and Software Requirements for Installing SQL Server
-- https://bit.ly/2y3ka5L
-- Using SQL Server in Windows 8 and later versions of Windows operating system
-- https://bit.ly/2F7Ax0P
-- SQL Server NUMA Node information (Query 12) (SQL Server NUMA Info)
SELECT node_id, node_state_desc, memory_node_id, processor_group, cpu_count, online_scheduler_count,
idle_scheduler_count, active_worker_count, avg_load_balance, resource_monitor_state
FROM sys.dm_os_nodes WITH (NOLOCK)
WHERE node_state_desc <> N'ONLINE DAC' OPTION (RECOMPILE);
------
-- Gives you some useful information about the composition and relative load on your NUMA nodes
-- You want to see an equal number of schedulers on each NUMA node
-- Watch out if SQL Server 2017 Standard Edition has been installed
-- on a physical or virtual machine with more than four sockets or more than 24 physical cores
-- sys.dm_os_nodes (Transact-SQL)
-- https://bit.ly/2pn5Mw8
-- Balancing Your Available SQL Server Core Licenses Evenly Across NUMA Nodes
-- https://bit.ly/2vfC4Rq
-- Good basic information about OS memory amounts and state (Query 13) (System Memory)
SELECT total_physical_memory_kb/1024 AS [Physical Memory (MB)],
available_physical_memory_kb/1024 AS [Available Memory (MB)],
total_page_file_kb/1024 AS [Total Page File (MB)],
available_page_file_kb/1024 AS [Available Page File (MB)],
system_cache_kb/1024 AS [System Cache (MB)],
system_memory_state_desc AS [System Memory State]
FROM sys.dm_os_sys_memory WITH (NOLOCK) OPTION (RECOMPILE);
------
-- You want to see "Available physical memory is high" for System Memory State
-- This indicates that you are not under external memory pressure
-- Possible System Memory State values:
-- Available physical memory is high
-- Physical memory usage is steady
-- Available physical memory is low
-- Available physical memory is running low
-- Physical memory state is transitioning
-- sys.dm_os_sys_memory (Transact-SQL)
-- https://bit.ly/2pcV0xq
-- You can skip the next two queries if you know you don't have a clustered instance
-- Get information about your cluster nodes and their status (Query 14) (Cluster Node Properties)
-- (if your database server is in a failover cluster)
SELECT NodeName, status_description, is_current_owner
FROM sys.dm_os_cluster_nodes WITH (NOLOCK) OPTION (RECOMPILE);
------
-- Knowing which node owns the cluster resources is critical
-- Especially when you are installing Windows or SQL Server updates
-- You will see no results if your instance is not clustered
-- Recommended hotfixes and updates for Windows Server 2012 R2-based failover clusters
-- https://bit.ly/1z5BfCw
-- Get information about any AlwaysOn AG cluster this instance is a part of (Query 15) (AlwaysOn AG Cluster)
SELECT cluster_name, quorum_type_desc, quorum_state_desc
FROM sys.dm_hadr_cluster WITH (NOLOCK) OPTION (RECOMPILE);
------
-- You will see no results if your instance is not using AlwaysOn AGs
-- Good overview of AG health and status (Query 16) (AlwaysOn AG Status)
SELECT ag.name AS [AG Name], ar.replica_server_name, ar.availability_mode_desc, adc.[database_name],
drs.is_local, drs.is_primary_replica, drs.synchronization_state_desc, drs.is_commit_participant,
drs.synchronization_health_desc, drs.recovery_lsn, drs.truncation_lsn, drs.last_sent_lsn,
drs.last_sent_time, drs.last_received_lsn, drs.last_received_time, drs.last_hardened_lsn,
drs.last_hardened_time, drs.last_redone_lsn, drs.last_redone_time, drs.log_send_queue_size,
drs.log_send_rate, drs.redo_queue_size, drs.redo_rate, drs.filestream_send_rate,
drs.end_of_log_lsn, drs.last_commit_lsn, drs.last_commit_time, drs.database_state_desc
FROM sys.dm_hadr_database_replica_states AS drs WITH (NOLOCK)
INNER JOIN sys.availability_databases_cluster AS adc WITH (NOLOCK)
ON drs.group_id = adc.group_id
AND drs.group_database_id = adc.group_database_id
INNER JOIN sys.availability_groups AS ag WITH (NOLOCK)
ON ag.group_id = drs.group_id
INNER JOIN sys.availability_replicas AS ar WITH (NOLOCK)
ON drs.group_id = ar.group_id
AND drs.replica_id = ar.replica_id
ORDER BY ag.name, ar.replica_server_name, adc.[database_name] OPTION (RECOMPILE);
-- You will see no results if your instance is not using AlwaysOn AGs
-- SQL Server 2016 It Just Runs Faster: Always On Availability Groups Turbocharged
-- https://bit.ly/2dn1H6r
-- Hardware information from SQL Server 2017 (Query 17) (Hardware Info)
SELECT cpu_count AS [Logical CPU Count], scheduler_count,
(socket_count * cores_per_socket) AS [Physical Core Count],
socket_count AS [Socket Count], cores_per_socket, numa_node_count,
physical_memory_kb/1024 AS [Physical Memory (MB)],
max_workers_count AS [Max Workers Count],
affinity_type_desc AS [Affinity Type],
sqlserver_start_time AS [SQL Server Start Time],
DATEDIFF(hour, sqlserver_start_time, GETDATE()) AS [SQL Server Up Time (hrs)],
virtual_machine_type_desc AS [Virtual Machine Type],
softnuma_configuration_desc AS [Soft NUMA Configuration],
sql_memory_model_desc, process_physical_affinity -- New in SQL Server 2017
FROM sys.dm_os_sys_info WITH (NOLOCK) OPTION (RECOMPILE);
------
-- Gives you some good basic hardware information about your database server
-- Note: virtual_machine_type_desc of HYPERVISOR does not automatically mean you are running SQL Server inside of a VM
-- It merely indicates that you have a hypervisor running on your host
-- sys.dm_os_sys_info (Transact-SQL)
-- https://bit.ly/2pczOYs
-- Soft NUMA configuration was a new column for SQL Server 2016
-- OFF = Soft-NUMA feature is OFF
-- ON = SQL Server automatically determines the NUMA node sizes for Soft-NUMA
-- MANUAL = Manually configured soft-NUMA
-- Configure SQL Server to Use Soft-NUMA (SQL Server)
-- https://bit.ly/2HTpKJt
-- sql_memory_model_desc values (Added in SQL Server 2016 SP1)
-- CONVENTIONAL
-- LOCK_PAGES
-- LARGE_PAGES
-- Get System Manufacturer and model number from SQL Server Error log (Query 18) (System Manufacturer)
EXEC sys.xp_readerrorlog 0, 1, N'Manufacturer';
------
-- This can help you determine the capabilities and capacities of your database server
-- Can also be used to confirm if you are running in a VM
-- This query might take a few seconds if you have not recycled your error log recently
-- This query will return no results if your error log has been recycled since the instance was started
-- Get pvscsi info from Windows Registry (Query 19) (PVSCSI Driver Parameters)
EXEC sys.xp_instance_regread N'HKEY_LOCAL_MACHINE', N'SYSTEM\CurrentControlSet\services\pvscsi\Parameters\Device', N'DriverParameter';
------
-- This is valid for VMware VMs
-- Recommended value for intensive I/O patterns from VMware is: RequestRingPages=32,MaxQueueDepth=254
-- https://kb.vmware.com/s/article/2053145
-- Does not work on Linux
-- Get BIOS date from Windows Registry (Query 20) (BIOS Date)
EXEC sys.xp_instance_regread N'HKEY_LOCAL_MACHINE', N'HARDWARE\DESCRIPTION\System\BIOS', N'BiosReleaseDate';
------
-- Helps you understand whether the main system BIOS is up to date, and the possible age of the hardware
-- Not as useful for virtualization
-- Does not work on Linux
-- Get processor description from Windows Registry (Query 21) (Processor Description)
EXEC sys.xp_instance_regread N'HKEY_LOCAL_MACHINE', N'HARDWARE\DESCRIPTION\System\CentralProcessor\0', N'ProcessorNameString';
------
-- Gives you the model number and rated clock speed of your processor(s)
-- Your processors may be running at less than the rated clock speed due
-- to the Windows Power Plan or hardware power management
-- Does not work on Linux
-- You can use CPU-Z to get your actual CPU core speed and a lot of other useful information
-- https://bit.ly/QhR6xF
-- You can learn more about processor selection for SQL Server by following this link
-- https://bit.ly/2F3aVlP
-- Get information on location, time and size of any memory dumps from SQL Server (Query 22) (Memory Dump Info)
SELECT [filename], creation_time, size_in_bytes/1048576.0 AS [Size (MB)]
FROM sys.dm_server_memory_dumps WITH (NOLOCK)
ORDER BY creation_time DESC OPTION (RECOMPILE);
------
-- This will not return any rows if you have
-- not had any memory dumps (which is a good thing)
-- sys.dm_server_memory_dumps (Transact-SQL)
-- https://bit.ly/2elwWll
-- Look at Suspect Pages table (Query 23) (Suspect Pages)
SELECT DB_NAME(database_id) AS [Database Name], [file_id], page_id,
event_type, error_count, last_update_date
FROM msdb.dbo.suspect_pages WITH (NOLOCK)
ORDER BY database_id OPTION (RECOMPILE);
------
-- event_type value descriptions
-- 1 = 823 error caused by an operating system CRC error
-- or 824 error other than a bad checksum or a torn page (for example, a bad page ID)
-- 2 = Bad checksum
-- 3 = Torn page
-- 4 = Restored (The page was restored after it was marked bad)
-- 5 = Repaired (DBCC repaired the page)
-- 7 = Deallocated by DBCC
-- Ideally, this query returns no results. The table is limited to 1000 rows.
-- If you do get results here, you should do further investigation to determine the root cause
-- Manage the suspect_pages Table
-- https://bit.ly/2Fvr1c9
-- Get number of data files in tempdb database (Query 24) (TempDB Data Files)
EXEC sys.xp_readerrorlog 0, 1, N'The tempdb database has';
------
-- Get the number of data files in the tempdb database
-- 4-8 data files that are all the same size is a good starting point
-- This query will return no results if your error log has been recycled since the instance was last started
-- File names and paths for all user and system databases on instance (Query 25) (Database Filenames and Paths)
SELECT DB_NAME([database_id]) AS [Database Name],
[file_id], [name], physical_name, [type_desc], state_desc,
is_percent_growth, growth,
CONVERT(bigint, growth/128.0) AS [Growth in MB],
CONVERT(bigint, size/128.0) AS [Total Size in MB], max_size
FROM sys.master_files WITH (NOLOCK)
ORDER BY DB_NAME([database_id]), [file_id] OPTION (RECOMPILE);
------
-- Things to look at:
-- Are data files and log files on different drives?
-- Is everything on the C: drive?
-- Is tempdb on dedicated drives?
-- Is there only one tempdb data file?
-- Are all of the tempdb data files the same size?
-- Are there multiple data files for user databases?
-- Is percent growth enabled for any files (which is bad)?
-- Drive information for all fixed drives visible to the operating system (Query 26) (Fixed Drives)
SELECT fixed_drive_path, drive_type_desc,
CONVERT(DECIMAL(18,2), free_space_in_bytes/1073741824.0) AS [Available Space (GB)]
FROM sys.dm_os_enumerate_fixed_drives WITH (NOLOCK) OPTION (RECOMPILE);
------
-- This shows all of your fixed drives, not just LUNs with SQL Server database files
-- Volume info for all LUNS that have database files on the current instance (Query 27) (Volume Info)
SELECT DISTINCT vs.volume_mount_point, vs.file_system_type, vs.logical_volume_name,
CONVERT(DECIMAL(18,2), vs.total_bytes/1073741824.0) AS [Total Size (GB)],
CONVERT(DECIMAL(18,2), vs.available_bytes/1073741824.0) AS [Available Size (GB)],
CONVERT(DECIMAL(18,2), vs.available_bytes * 1. / vs.total_bytes * 100.) AS [Space Free %],
vs.supports_compression, vs.is_compressed,
vs.supports_sparse_files, vs.supports_alternate_streams
FROM sys.master_files AS f WITH (NOLOCK)
CROSS APPLY sys.dm_os_volume_stats(f.database_id, f.[file_id]) AS vs
ORDER BY vs.volume_mount_point OPTION (RECOMPILE);
------
-- Shows you the total and free space on the LUNs where you have database files
-- Being low on free space can negatively affect performance
-- sys.dm_os_volume_stats (Transact-SQL)
-- https://bit.ly/2oBPNNr
-- Drive level latency information (Query 28) (Drive Level Latency)
-- Based on code from Jimmy May
SELECT tab.[Drive], tab.volume_mount_point AS [Volume Mount Point],
CASE
WHEN num_of_reads = 0 THEN 0
ELSE (io_stall_read_ms/num_of_reads)
END AS [Read Latency],
CASE
WHEN num_of_writes = 0 THEN 0
ELSE (io_stall_write_ms/num_of_writes)
END AS [Write Latency],
CASE
WHEN (num_of_reads = 0 AND num_of_writes = 0) THEN 0
ELSE (io_stall/(num_of_reads + num_of_writes))
END AS [Overall Latency],
CASE
WHEN num_of_reads = 0 THEN 0
ELSE (num_of_bytes_read/num_of_reads)
END AS [Avg Bytes/Read],
CASE
WHEN num_of_writes = 0 THEN 0
ELSE (num_of_bytes_written/num_of_writes)
END AS [Avg Bytes/Write],
CASE
WHEN (num_of_reads = 0 AND num_of_writes = 0) THEN 0
ELSE ((num_of_bytes_read + num_of_bytes_written)/(num_of_reads + num_of_writes))
END AS [Avg Bytes/Transfer]
FROM (SELECT LEFT(UPPER(mf.physical_name), 2) AS Drive, SUM(num_of_reads) AS num_of_reads,
SUM(io_stall_read_ms) AS io_stall_read_ms, SUM(num_of_writes) AS num_of_writes,
SUM(io_stall_write_ms) AS io_stall_write_ms, SUM(num_of_bytes_read) AS num_of_bytes_read,
SUM(num_of_bytes_written) AS num_of_bytes_written, SUM(io_stall) AS io_stall, vs.volume_mount_point
FROM sys.dm_io_virtual_file_stats(NULL, NULL) AS vfs
INNER JOIN sys.master_files AS mf WITH (NOLOCK)
ON vfs.database_id = mf.database_id AND vfs.file_id = mf.file_id
CROSS APPLY sys.dm_os_volume_stats(mf.database_id, mf.[file_id]) AS vs
GROUP BY LEFT(UPPER(mf.physical_name), 2), vs.volume_mount_point) AS tab
ORDER BY [Overall Latency] OPTION (RECOMPILE);
------
-- Shows you the drive-level latency for reads and writes, in milliseconds
-- Latency above 30-40ms is usually a problem
-- These latency numbers include all file activity against all SQL Server
-- database files on each drive since SQL Server was last started
-- Calculates average stalls per read, per write, and per total input/output for each database file (Query 29) (IO Latency by File)
SELECT DB_NAME(fs.database_id) AS [Database Name], CAST(fs.io_stall_read_ms/(1.0 + fs.num_of_reads) AS NUMERIC(10,1)) AS [avg_read_latency_ms],
CAST(fs.io_stall_write_ms/(1.0 + fs.num_of_writes) AS NUMERIC(10,1)) AS [avg_write_latency_ms],
CAST((fs.io_stall_read_ms + fs.io_stall_write_ms)/(1.0 + fs.num_of_reads + fs.num_of_writes) AS NUMERIC(10,1)) AS [avg_io_latency_ms],
CONVERT(DECIMAL(18,2), mf.size/128.0) AS [File Size (MB)], mf.physical_name, mf.type_desc, fs.io_stall_read_ms, fs.num_of_reads,
fs.io_stall_write_ms, fs.num_of_writes, fs.io_stall_read_ms + fs.io_stall_write_ms AS [io_stalls], fs.num_of_reads + fs.num_of_writes AS [total_io],
io_stall_queued_read_ms AS [Resource Governor Total Read IO Latency (ms)], io_stall_queued_write_ms AS [Resource Governor Total Write IO Latency (ms)]
FROM sys.dm_io_virtual_file_stats(null,null) AS fs
INNER JOIN sys.master_files AS mf WITH (NOLOCK)
ON fs.database_id = mf.database_id
AND fs.[file_id] = mf.[file_id]
ORDER BY avg_io_latency_ms DESC OPTION (RECOMPILE);
------
-- Helps determine which database files on the entire instance have the most I/O bottlenecks
-- This can help you decide whether certain LUNs are overloaded and whether you might
-- want to move some files to a different location or perhaps improve your I/O performance
-- These latency numbers include all file activity against each SQL Server
-- database file since SQL Server was last started
-- Look for I/O requests taking longer than 15 seconds in the six most recent SQL Server Error Logs (Query 30) (IO Warnings)
CREATE TABLE #IOWarningResults(LogDate datetime, ProcessInfo sysname, LogText nvarchar(1000));
INSERT INTO #IOWarningResults
EXEC xp_readerrorlog 0, 1, N'taking longer than 15 seconds';
INSERT INTO #IOWarningResults
EXEC xp_readerrorlog 1, 1, N'taking longer than 15 seconds';
INSERT INTO #IOWarningResults
EXEC xp_readerrorlog 2, 1, N'taking longer than 15 seconds';
INSERT INTO #IOWarningResults
EXEC xp_readerrorlog 3, 1, N'taking longer than 15 seconds';
INSERT INTO #IOWarningResults
EXEC xp_readerrorlog 4, 1, N'taking longer than 15 seconds';
INSERT INTO #IOWarningResults
EXEC xp_readerrorlog 5, 1, N'taking longer than 15 seconds';
SELECT LogDate, ProcessInfo, LogText
FROM #IOWarningResults
ORDER BY LogDate DESC;
DROP TABLE #IOWarningResults;
------
-- Finding 15 second I/O warnings in the SQL Server Error Log is useful evidence of
-- poor I/O performance (which might have many different causes)
-- Look to see if you see any patterns in the results (same files, same drives, same time of day, etc.)
-- Diagnostics in SQL Server help detect stalled and stuck I/O operations
-- https://bit.ly/2qtaw73
-- Resource Governor Resource Pool information (Query 31) (RG Resource Pools)
SELECT pool_id, [Name], statistics_start_time,
min_memory_percent, max_memory_percent,
max_memory_kb/1024 AS [max_memory_mb],
used_memory_kb/1024 AS [used_memory_mb],
target_memory_kb/1024 AS [target_memory_mb],
min_iops_per_volume, max_iops_per_volume
FROM sys.dm_resource_governor_resource_pools WITH (NOLOCK)
OPTION (RECOMPILE);
------
-- sys.dm_resource_governor_resource_pools (Transact-SQL)
-- https://bit.ly/2MVU0Vy
-- Recovery model, log reuse wait description, log file size, log usage size (Query 32) (Database Properties)
-- and compatibility level for all databases on instance
SELECT db.[name] AS [Database Name], SUSER_SNAME(db.owner_sid) AS [Database Owner], db.recovery_model_desc AS [Recovery Model],
db.state_desc, db.containment_desc, db.log_reuse_wait_desc AS [Log Reuse Wait Description],
CONVERT(DECIMAL(18,2), ls.cntr_value/1024.0) AS [Log Size (MB)], CONVERT(DECIMAL(18,2), lu.cntr_value/1024.0) AS [Log Used (MB)],
CAST(CAST(lu.cntr_value AS FLOAT) / CAST(ls.cntr_value AS FLOAT)AS DECIMAL(18,2)) * 100 AS [Log Used %],
db.[compatibility_level] AS [DB Compatibility Level],
db.is_mixed_page_allocation_on, db.page_verify_option_desc AS [Page Verify Option],
db.is_auto_create_stats_on, db.is_auto_update_stats_on, db.is_auto_update_stats_async_on, db.is_parameterization_forced,
db.snapshot_isolation_state_desc, db.is_read_committed_snapshot_on, db.is_auto_close_on, db.is_auto_shrink_on,
db.target_recovery_time_in_seconds, db.is_cdc_enabled, db.is_published, db.is_distributor,
db.group_database_id, db.replica_id,db.is_memory_optimized_elevate_to_snapshot_on,
db.delayed_durability_desc, db.is_auto_create_stats_incremental_on,
db.is_query_store_on, db.is_sync_with_backup, db.is_temporal_history_retention_enabled,
db.is_supplemental_logging_enabled, db.is_remote_data_archive_enabled,
db.is_encrypted, de.encryption_state, de.percent_complete, de.key_algorithm, de.key_length, db.resource_pool_id
FROM sys.databases AS db WITH (NOLOCK)
INNER JOIN sys.dm_os_performance_counters AS lu WITH (NOLOCK)
ON db.name = lu.instance_name
INNER JOIN sys.dm_os_performance_counters AS ls WITH (NOLOCK)
ON db.name = ls.instance_name
LEFT OUTER JOIN sys.dm_database_encryption_keys AS de WITH (NOLOCK)
ON db.database_id = de.database_id
WHERE lu.counter_name LIKE N'Log File(s) Used Size (KB)%'
AND ls.counter_name LIKE N'Log File(s) Size (KB)%'
AND ls.cntr_value > 0
ORDER BY db.[name] OPTION (RECOMPILE);
------
-- Things to look at:
-- How many databases are on the instance?
-- What recovery models are they using?
-- What is the log reuse wait description?
-- How full are the transaction logs?
-- What compatibility level are the databases on?
-- What is the Page Verify Option? (should be CHECKSUM)
-- Is Auto Update Statistics Asynchronously enabled?
-- Is Delayed Durability enabled
-- Make sure auto_shrink and auto_close are not enabled!
-- is_mixed_page_allocation_on is a new property for SQL Server 2016. Equivalent to TF 1118 for a user database
-- SQL Server 2016: Changes in default behavior for autogrow and allocations for tempdb and user databases
-- https://bit.ly/2evRZSR
-- A non-zero value for target_recovery_time_in_seconds means that indirect checkpoint is enabled
-- If the setting has a zero value it indicates that automatic checkpoint is enabled
-- Changes in SQL Server 2016 Checkpoint Behavior
-- https://bit.ly/2pdggk3
-- Missing Indexes for all databases by Index Advantage (Query 33) (Missing Indexes All Databases)
SELECT CONVERT(decimal(18,2), user_seeks * avg_total_user_cost * (avg_user_impact * 0.01)) AS [index_advantage],
FORMAT(migs.last_user_seek, 'yyyy-MM-dd HH:mm:ss') AS [last_user_seek],
mid.[statement] AS [Database.Schema.Table],
COUNT(1) OVER(PARTITION BY mid.[statement]) AS [missing_indexes_for_table],
COUNT(1) OVER(PARTITION BY mid.[statement], equality_columns) AS [similar_missing_indexes_for_table],
mid.equality_columns, mid.inequality_columns, mid.included_columns,
migs.unique_compiles, migs.user_seeks,
CONVERT(decimal(18,2), migs.avg_total_user_cost) AS [avg_total_user_cost], migs.avg_user_impact
FROM sys.dm_db_missing_index_group_stats AS migs WITH (NOLOCK)
INNER JOIN sys.dm_db_missing_index_groups AS mig WITH (NOLOCK)
ON migs.group_handle = mig.index_group_handle
INNER JOIN sys.dm_db_missing_index_details AS mid WITH (NOLOCK)
ON mig.index_handle = mid.index_handle
ORDER BY index_advantage DESC OPTION (RECOMPILE);
------
-- Getting missing index information for all of the databases on the instance is very useful
-- Look at last user seek time, number of user seeks to help determine source and importance
-- Also look at avg_user_impact and avg_total_user_cost to help determine importance
-- SQL Server is overly eager to add included columns, so beware
-- Do not just blindly add indexes that show up from this query!!!
-- SQL Server Index Design Guide
-- https://bit.ly/2qtZr4N
-- Get VLF Counts for all databases on the instance (Query 34) (VLF Counts)
SELECT [name] AS [Database Name], [VLF Count]
FROM sys.databases AS db WITH (NOLOCK)
CROSS APPLY (SELECT file_id, COUNT(*) AS [VLF Count]
FROM sys.dm_db_log_info(db.database_id)
GROUP BY file_id) AS li
ORDER BY [VLF Count] DESC OPTION (RECOMPILE);
------
-- High VLF counts can affect write performance to the log file
-- and they can make full database restores and crash recovery take much longer
-- Try to keep your VLF counts under 200 in most cases (depending on log file size)
-- Important change to VLF creation algorithm in SQL Server 2014
-- https://bit.ly/2Hsjbg4
-- SQL Server Transaction Log Architecture and Management Guide
-- https://bit.ly/2JjmQRZ
-- Get CPU utilization by database (Query 35) (CPU Usage by Database)
WITH DB_CPU_Stats
AS
(SELECT pa.DatabaseID, DB_Name(pa.DatabaseID) AS [Database Name], SUM(qs.total_worker_time/1000) AS [CPU_Time_Ms]
FROM sys.dm_exec_query_stats AS qs WITH (NOLOCK)
CROSS APPLY (SELECT CONVERT(int, value) AS [DatabaseID]
FROM sys.dm_exec_plan_attributes(qs.plan_handle)
WHERE attribute = N'dbid') AS pa
GROUP BY DatabaseID)
SELECT ROW_NUMBER() OVER(ORDER BY [CPU_Time_Ms] DESC) AS [CPU Rank],
[Database Name], [CPU_Time_Ms] AS [CPU Time (ms)],
CAST([CPU_Time_Ms] * 1.0 / SUM([CPU_Time_Ms]) OVER() * 100.0 AS DECIMAL(5, 2)) AS [CPU Percent]
FROM DB_CPU_Stats
WHERE DatabaseID <> 32767 -- ResourceDB
ORDER BY [CPU Rank] OPTION (RECOMPILE);
------
-- Helps determine which database is using the most CPU resources on the instance
-- Note: This only reflects CPU usage from the currently cached query plans
-- Get I/O utilization by database (Query 36) (IO Usage By Database)
WITH Aggregate_IO_Statistics
AS (SELECT DB_NAME(database_id) AS [Database Name],
CAST(SUM(num_of_bytes_read + num_of_bytes_written) / 1048576 AS DECIMAL(12, 2)) AS [ioTotalMB],
CAST(SUM(num_of_bytes_read ) / 1048576 AS DECIMAL(12, 2)) AS [ioReadMB],
CAST(SUM(num_of_bytes_written) / 1048576 AS DECIMAL(12, 2)) AS [ioWriteMB]
FROM sys.dm_io_virtual_file_stats(NULL, NULL) AS [DM_IO_STATS]
GROUP BY database_id)
SELECT ROW_NUMBER() OVER (ORDER BY ioTotalMB DESC) AS [I/O Rank],
[Database Name], ioTotalMB AS [Total I/O (MB)],
CAST(ioTotalMB / SUM(ioTotalMB) OVER () * 100.0 AS DECIMAL(5, 2)) AS [Total I/O %],
ioReadMB AS [Read I/O (MB)],
CAST(ioReadMB / SUM(ioReadMB) OVER () * 100.0 AS DECIMAL(5, 2)) AS [Read I/O %],
ioWriteMB AS [Write I/O (MB)],
CAST(ioWriteMB / SUM(ioWriteMB) OVER () * 100.0 AS DECIMAL(5, 2)) AS [Write I/O %]
FROM Aggregate_IO_Statistics
ORDER BY [I/O Rank] OPTION (RECOMPILE);
------
-- Helps determine which database is using the most I/O resources on the instance
-- These numbers are cumulative since the last service restart
-- They include all I/O activity, not just the nominal I/O workload
-- Get total buffer usage by database for current instance (Query 37) (Total Buffer Usage by Database)
-- This make take some time to run on a busy instance
WITH AggregateBufferPoolUsage
AS
(SELECT DB_NAME(database_id) AS [Database Name],
CAST(COUNT(*) * 8/1024.0 AS DECIMAL (10,2)) AS [CachedSize]
FROM sys.dm_os_buffer_descriptors WITH (NOLOCK)
WHERE database_id <> 32767 -- ResourceDB
GROUP BY DB_NAME(database_id))
SELECT ROW_NUMBER() OVER(ORDER BY CachedSize DESC) AS [Buffer Pool Rank], [Database Name], CachedSize AS [Cached Size (MB)],
CAST(CachedSize / SUM(CachedSize) OVER() * 100.0 AS DECIMAL(5,2)) AS [Buffer Pool Percent]
FROM AggregateBufferPoolUsage
ORDER BY [Buffer Pool Rank] OPTION (RECOMPILE);
------
-- Tells you how much memory (in the buffer pool)
-- is being used by each database on the instance
-- Get tempdb version store space usage by database (Query 38) (Version Store Space Usage)
SELECT DB_NAME(database_id) AS [Database Name],
reserved_page_count AS [Version Store Reserved Page Count],
reserved_space_kb/1024 AS [Version Store Reserved Space (MB)]
FROM sys.dm_tran_version_store_space_usage WITH (NOLOCK)
ORDER BY reserved_space_kb/1024 DESC OPTION (RECOMPILE);
------
-- sys.dm_tran_version_store_space_usage (Transact-SQL)
-- https://bit.ly/2vh3Bmk
-- Clear Wait Stats with this command
-- DBCC SQLPERF('sys.dm_os_wait_stats', CLEAR);
-- Isolate top waits for server instance since last restart or wait statistics clear (Query 39) (Top Waits)
WITH [Waits]
AS (SELECT wait_type, wait_time_ms/ 1000.0 AS [WaitS],
(wait_time_ms - signal_wait_time_ms) / 1000.0 AS [ResourceS],
signal_wait_time_ms / 1000.0 AS [SignalS],
waiting_tasks_count AS [WaitCount],
100.0 * wait_time_ms / SUM (wait_time_ms) OVER() AS [Percentage],
ROW_NUMBER() OVER(ORDER BY wait_time_ms DESC) AS [RowNum]
FROM sys.dm_os_wait_stats WITH (NOLOCK)
WHERE [wait_type] NOT IN (
N'BROKER_EVENTHANDLER', N'BROKER_RECEIVE_WAITFOR', N'BROKER_TASK_STOP',
N'BROKER_TO_FLUSH', N'BROKER_TRANSMITTER', N'CHECKPOINT_QUEUE',
N'CHKPT', N'CLR_AUTO_EVENT', N'CLR_MANUAL_EVENT', N'CLR_SEMAPHORE', N'CXCONSUMER',
N'DBMIRROR_DBM_EVENT', N'DBMIRROR_EVENTS_QUEUE', N'DBMIRROR_WORKER_QUEUE',
N'DBMIRRORING_CMD', N'DIRTY_PAGE_POLL', N'DISPATCHER_QUEUE_SEMAPHORE',
N'EXECSYNC', N'FSAGENT', N'FT_IFTS_SCHEDULER_IDLE_WAIT', N'FT_IFTSHC_MUTEX',
N'HADR_CLUSAPI_CALL', N'HADR_FILESTREAM_IOMGR_IOCOMPLETION', N'HADR_LOGCAPTURE_WAIT',
N'HADR_NOTIFICATION_DEQUEUE', N'HADR_TIMER_TASK', N'HADR_WORK_QUEUE',
N'KSOURCE_WAKEUP', N'LAZYWRITER_SLEEP', N'LOGMGR_QUEUE',
N'MEMORY_ALLOCATION_EXT', N'ONDEMAND_TASK_QUEUE',
N'PARALLEL_REDO_DRAIN_WORKER', N'PARALLEL_REDO_LOG_CACHE', N'PARALLEL_REDO_TRAN_LIST',
N'PARALLEL_REDO_WORKER_SYNC', N'PARALLEL_REDO_WORKER_WAIT_WORK',
N'PREEMPTIVE_HADR_LEASE_MECHANISM', N'PREEMPTIVE_SP_SERVER_DIAGNOSTICS',
N'PREEMPTIVE_OS_LIBRARYOPS', N'PREEMPTIVE_OS_COMOPS', N'PREEMPTIVE_OS_CRYPTOPS',
N'PREEMPTIVE_OS_PIPEOPS', N'PREEMPTIVE_OS_AUTHENTICATIONOPS',
N'PREEMPTIVE_OS_GENERICOPS', N'PREEMPTIVE_OS_VERIFYTRUST',
N'PREEMPTIVE_OS_FILEOPS', N'PREEMPTIVE_OS_DEVICEOPS', N'PREEMPTIVE_OS_QUERYREGISTRY',
N'PREEMPTIVE_OS_WRITEFILE',
N'PREEMPTIVE_XE_CALLBACKEXECUTE', N'PREEMPTIVE_XE_DISPATCHER',
N'PREEMPTIVE_XE_GETTARGETSTATE', N'PREEMPTIVE_XE_SESSIONCOMMIT',
N'PREEMPTIVE_XE_TARGETINIT', N'PREEMPTIVE_XE_TARGETFINALIZE',
N'PWAIT_ALL_COMPONENTS_INITIALIZED', N'PWAIT_DIRECTLOGCONSUMER_GETNEXT',
N'QDS_PERSIST_TASK_MAIN_LOOP_SLEEP',
N'QDS_ASYNC_QUEUE',
N'QDS_CLEANUP_STALE_QUERIES_TASK_MAIN_LOOP_SLEEP', N'REQUEST_FOR_DEADLOCK_SEARCH',
N'RESOURCE_QUEUE', N'SERVER_IDLE_CHECK', N'SLEEP_BPOOL_FLUSH', N'SLEEP_DBSTARTUP',
N'SLEEP_DCOMSTARTUP', N'SLEEP_MASTERDBREADY', N'SLEEP_MASTERMDREADY',
N'SLEEP_MASTERUPGRADED', N'SLEEP_MSDBSTARTUP', N'SLEEP_SYSTEMTASK', N'SLEEP_TASK',
N'SLEEP_TEMPDBSTARTUP', N'SNI_HTTP_ACCEPT', N'SP_SERVER_DIAGNOSTICS_SLEEP',
N'SQLTRACE_BUFFER_FLUSH', N'SQLTRACE_INCREMENTAL_FLUSH_SLEEP', N'SQLTRACE_WAIT_ENTRIES',
N'WAIT_FOR_RESULTS', N'WAITFOR', N'WAITFOR_TASKSHUTDOWN', N'WAIT_XTP_HOST_WAIT',
N'WAIT_XTP_OFFLINE_CKPT_NEW_LOG', N'WAIT_XTP_CKPT_CLOSE', N'WAIT_XTP_RECOVERY',
N'XE_BUFFERMGR_ALLPROCESSED_EVENT', N'XE_DISPATCHER_JOIN',
N'XE_DISPATCHER_WAIT', N'XE_LIVE_TARGET_TVF', N'XE_TIMER_EVENT')
AND waiting_tasks_count > 0)
SELECT
MAX (W1.wait_type) AS [WaitType],
CAST (MAX (W1.Percentage) AS DECIMAL (5,2)) AS [Wait Percentage],
CAST ((MAX (W1.WaitS) / MAX (W1.WaitCount)) AS DECIMAL (16,4)) AS [AvgWait_Sec],
CAST ((MAX (W1.ResourceS) / MAX (W1.WaitCount)) AS DECIMAL (16,4)) AS [AvgRes_Sec],
CAST ((MAX (W1.SignalS) / MAX (W1.WaitCount)) AS DECIMAL (16,4)) AS [AvgSig_Sec],
CAST (MAX (W1.WaitS) AS DECIMAL (16,2)) AS [Wait_Sec],
CAST (MAX (W1.ResourceS) AS DECIMAL (16,2)) AS [Resource_Sec],