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Commit 43d772d

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Easy changes for release
Set nocount on Set read uncommitted Add recompile hints Add version Tidy up help Add documentation
1 parent 97be4b7 commit 43d772d

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1 file changed

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‎sp_BlitzLock.sql‎

Lines changed: 96 additions & 30 deletions
Original file line numberDiff line numberDiff line change
@@ -4,9 +4,23 @@ GO
44

55
ALTER PROCEDURE dbo.sp_BlitzLock
66
(
7-
@Top INT = 2147483647, @StartDate DATETIME = '19000101', @EndDate DATETIME = '99991231', @Debug BIT = 0, @EventSessionPath NVARCHAR(256) = NULL, @Help BIT = 0
7+
@Top INT = 2147483647,
8+
@StartDate DATETIME = '19000101',
9+
@EndDate DATETIME = '99991231',
10+
@Debug BIT = 0,
11+
@EventSessionPath NVARCHAR(256) = NULL,
12+
@Help BIT = 0,
13+
@VersionDate DATETIME = NULL OUTPUT
814
)
915
AS
16+
SET NOCOUNT ON;
17+
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
18+
DECLARE @Version VARCHAR(30);
19+
SET @Version = '1.0';
20+
SET @VersionDate = '20171201';
21+
22+
23+
1024
BEGIN
1125

1226
IF @Help = 1 PRINT '
@@ -15,6 +29,31 @@ AS
1529
1630
This script checks for and analyzes deadlocks from the system health session or a custom extended event path
1731
32+
Variables you can use:
33+
@Top: Use if you want to limit the number of deadlocks to return.
34+
This is ordered by event date ascending
35+
36+
@DatabaseName: If you want to filter to a specific database
37+
38+
@StartDate: The date you want to start searching on.
39+
40+
@EndDate: The date you want to stop searching on.
41+
42+
@ObjectName: If you want to filter to a specific able.
43+
The object name has to be fully qualified ''Database.Schema.Table''
44+
45+
@StoredProcName: If you want to search for a single stored proc
46+
47+
@AppName: If you want to filter to a specific application
48+
49+
@HostName: If you want to filter to a specific host
50+
51+
@LoginName: If you want to filter to a specific login
52+
53+
@EventSessionPath: If you want to point this at an XE session rather than the system health session.
54+
55+
56+
1857
To learn more, visit http://FirstResponderKit.org where you can download new
1958
versions for free, watch training videos on how it works, get more info on
2059
the findings, contribute your own code, and more.
@@ -124,7 +163,9 @@ AS
124163
FROM xml
125164
WHERE xml.deadlock_xml.value('(/event/@name)[1]', 'VARCHAR(255)') = 'xml_deadlock_report'
126165
AND xml.deadlock_xml.value('(/event/@timestamp)[1]', 'datetime') >= @StartDate
127-
AND xml.deadlock_xml.value('(/event/@timestamp)[1]', 'datetime') < @EndDate;
166+
AND xml.deadlock_xml.value('(/event/@timestamp)[1]', 'datetime') < @EndDate
167+
ORDER BY xml.deadlock_xml.value('(/event/@timestamp)[1]', 'datetime')
168+
OPTION ( RECOMPILE );
128169

129170
IF @@ROWCOUNT < 1
130171
BEGIN
@@ -161,7 +202,8 @@ AS
161202
INTO #deadlock_process
162203
FROM #deadlock_data AS dd
163204
CROSS APPLY dd.deadlock_xml.nodes('//deadlock/process-list/process') AS ca(dp)
164-
CROSS APPLY dd.deadlock_xml.nodes('//deadlock/process-list/process/inputbuf') AS ca2(ib);
205+
CROSS APPLY dd.deadlock_xml.nodes('//deadlock/process-list/process/inputbuf') AS ca2(ib)
206+
OPTION ( RECOMPILE );
165207

166208

167209
/*Parse execution stack XML*/
@@ -170,14 +212,16 @@ AS
170212
ca.dp.value('@sqlhandle', 'NVARCHAR(128)') AS sql_handle
171213
INTO #deadlock_stack
172214
FROM #deadlock_process AS dp
173-
CROSS APPLY dp.process_xml.nodes('//executionStack/frame') AS ca(dp);
215+
CROSS APPLY dp.process_xml.nodes('//executionStack/frame') AS ca(dp)
216+
OPTION ( RECOMPILE );
174217

175218

176219
/*Grab the full resource list*/
177220
SELECT ca.dp.query('.') AS resource_xml
178221
INTO #deadlock_resource
179222
FROM #deadlock_data AS dd
180-
CROSS APPLY dd.deadlock_xml.nodes('//deadlock/resource-list') AS ca(dp);
223+
CROSS APPLY dd.deadlock_xml.nodes('//deadlock/resource-list') AS ca(dp)
224+
OPTION ( RECOMPILE );
181225

182226

183227
/*This parses object locks*/
@@ -192,7 +236,8 @@ AS
192236
FROM #deadlock_resource AS dr
193237
CROSS APPLY dr.resource_xml.nodes('//resource-list/objectlock') AS ca(dr)
194238
CROSS APPLY ca.dr.nodes('//waiter-list/waiter') AS w(l)
195-
CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l);
239+
CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l)
240+
OPTION ( RECOMPILE );
196241

197242

198243
/*This parses page locks*/
@@ -207,7 +252,8 @@ AS
207252
FROM #deadlock_resource AS dr
208253
CROSS APPLY dr.resource_xml.nodes('//resource-list/pagelock') AS ca(dr)
209254
CROSS APPLY ca.dr.nodes('//waiter-list/waiter') AS w(l)
210-
CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l);
255+
CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l)
256+
OPTION ( RECOMPILE );
211257

212258

213259
/*This parses key locks*/
@@ -222,7 +268,8 @@ AS
222268
FROM #deadlock_resource AS dr
223269
CROSS APPLY dr.resource_xml.nodes('//resource-list/keylock') AS ca(dr)
224270
CROSS APPLY ca.dr.nodes('//waiter-list/waiter') AS w(l)
225-
CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l);
271+
CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l)
272+
OPTION ( RECOMPILE );
226273

227274

228275
/*This parses rid locks*/
@@ -237,7 +284,8 @@ AS
237284
FROM #deadlock_resource AS dr
238285
CROSS APPLY dr.resource_xml.nodes('//resource-list/ridlock') AS ca(dr)
239286
CROSS APPLY ca.dr.nodes('//waiter-list/waiter') AS w(l)
240-
CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l);
287+
CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l)
288+
OPTION ( RECOMPILE );
241289

242290

243291
/*Begin checks based on parsed values*/
@@ -253,7 +301,8 @@ AS
253301
+ ' deadlocks.',
254302
NULL AS query_text
255303
FROM #deadlock_owner_waiter AS dow
256-
GROUP BY DB_NAME(dow.database_id);
304+
GROUP BY DB_NAME(dow.database_id)
305+
OPTION ( RECOMPILE );
257306

258307
/*Check 2 is deadlocks by object*/
259308

@@ -267,7 +316,8 @@ AS
267316
+ ' deadlocks.',
268317
NULL AS query_text
269318
FROM #deadlock_owner_waiter AS dow
270-
GROUP BY DB_NAME(dow.database_id), dow.object_name;
319+
GROUP BY DB_NAME(dow.database_id), dow.object_name
320+
OPTION ( RECOMPILE );
271321

272322

273323
/*Check 3 looks for Serializable locking*/
@@ -283,7 +333,9 @@ AS
283333
NULL AS query_text
284334
FROM #deadlock_process AS dp
285335
WHERE dp.isolation_level LIKE 'serializable%'
286-
GROUP BY DB_NAME(dp.database_id);
336+
GROUP BY DB_NAME(dp.database_id)
337+
OPTION ( RECOMPILE );
338+
287339

288340
/*Check 4 looks for Repeatable Read locking*/
289341
INSERT #deadlock_findings ( check_id, database_name, object_name, finding_group, finding, query_text )
@@ -298,7 +350,9 @@ AS
298350
NULL AS query_text
299351
FROM #deadlock_process AS dp
300352
WHERE dp.isolation_level LIKE 'repeatable read%'
301-
GROUP BY DB_NAME(dp.database_id);
353+
GROUP BY DB_NAME(dp.database_id)
354+
OPTION ( RECOMPILE );
355+
302356

303357
/*Check 5 breaks down app, host, and login information*/
304358
INSERT #deadlock_findings ( check_id, database_name, object_name, finding_group, finding, query_text )
@@ -317,7 +371,9 @@ AS
317371
AS finding,
318372
NULL AS query_text
319373
FROM #deadlock_process AS dp
320-
GROUP BY DB_NAME(dp.database_id), dp.login_name, dp.client_app, dp.host_name;
374+
GROUP BY DB_NAME(dp.database_id), dp.login_name, dp.client_app, dp.host_name
375+
OPTION ( RECOMPILE );
376+
321377

322378
/*Check 6 breaks down the types of locks (object, page, key, etc.)*/
323379
WITH lock_types AS (
@@ -343,7 +399,9 @@ AS
343399
FOR XML PATH(N''), TYPE).value(N'.[1]', N'NVARCHAR(MAX)'), 1, 1, N'')
344400
+ ' locks',
345401
NULL AS query_text
346-
FROM lock_types AS lt;
402+
FROM lock_types AS lt
403+
OPTION ( RECOMPILE );
404+
347405

348406
/*Check 7 gives you more info queries for sp_BlitzCache */
349407
INSERT #deadlock_findings ( check_id, database_name, object_name, finding_group, finding, query_text )
@@ -362,7 +420,9 @@ AS
362420
NULL AS query_text
363421
FROM #deadlock_stack AS ds
364422
JOIN #deadlock_owner_waiter AS dow
365-
ON dow.owner_id = ds.id;
423+
ON dow.owner_id = ds.id
424+
OPTION ( RECOMPILE );
425+
366426

367427
/*Check 8 gives you more info queries for sp_BlitzCache */
368428
WITH bi AS (
@@ -384,7 +444,9 @@ AS
384444
', @TableName = ' + QUOTENAME(bi.table_name, '''') +
385445
';' AS finding,
386446
NULL AS query_text
387-
FROM bi;
447+
FROM bi
448+
OPTION ( RECOMPILE );
449+
388450

389451
/*Check 9 gets total deadlock wait time per database*/
390452
WITH wait_time AS (
@@ -404,7 +466,8 @@ AS
404466
+ ' [d/h/m/s] of deadlock wait time.',
405467
NULL AS query_text
406468
FROM wait_time AS wt
407-
GROUP BY wt.database_name;
469+
GROUP BY wt.database_name
470+
OPTION ( RECOMPILE );
408471

409472

410473
/*Thank you goodnight*/
@@ -499,40 +562,43 @@ AS
499562
JOIN (SELECT TOP 1 * FROM #deadlock_process AS dp) AS owner
500563
ON owner.id = dow.owner_id
501564
JOIN (SELECT TOP 1 * FROM #deadlock_process AS dp) AS waiter
502-
ON waiter.id = dow.owner_id;
565+
ON waiter.id = dow.owner_id
566+
OPTION ( RECOMPILE );
503567

504568

505569

506570
SELECT df.check_id, df.database_name, df.object_name, df.finding_group, df.finding, df.query_text
507571
FROM #deadlock_findings AS df
508-
ORDER BY df.check_id;
572+
ORDER BY df.check_id
573+
OPTION ( RECOMPILE );
509574

510575

511576
IF @Debug = 1
512577
BEGIN
513578

514579
SELECT '#deadlock_data' AS table_name, *
515-
FROM #deadlock_data AS dd;
580+
FROM #deadlock_data AS dd
581+
OPTION ( RECOMPILE );
516582

517583
SELECT '#deadlock_resource' AS table_name, *
518-
FROM #deadlock_resource AS dr;
584+
FROM #deadlock_resource AS dr
585+
OPTION ( RECOMPILE );
519586

520587
SELECT '#deadlock_owner_waiter' AS table_name, *
521-
FROM #deadlock_owner_waiter AS dow;
588+
FROM #deadlock_owner_waiter AS dow
589+
OPTION ( RECOMPILE );
522590

523591
SELECT '#deadlock_process' AS table_name, *
524-
FROM #deadlock_process AS dp;
592+
FROM #deadlock_process AS dp
593+
OPTION ( RECOMPILE );
525594

526595
SELECT '#deadlock_stack' AS table_name, *
527-
FROM #deadlock_stack AS ds;
596+
FROM #deadlock_stack AS ds
597+
OPTION ( RECOMPILE );
528598

529599
END; -- End debug
530600

531601
END; --Final End
532-
GO
533-
534-
535-
536-
537602

603+
GO
538604

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