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Commit 17ffda4

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Aversion to versions
Bigtime WIP, starting queries
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‎sp_BlitzLock.sql‎

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IF OBJECT_ID('dbo.sp_BlitzLock') IS NULL
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EXEC ('CREATE PROCEDURE dbo.sp_BlitzLock AS RETURN 0;');
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GO
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ALTER PROCEDURE dbo.sp_BlitzLock
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(
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@Top INT = 2147483647, @StartDate DATETIME = '19000101', @EndDate DATETIME = '99991231', @Debug BIT = 0, @EventSessionPath NVARCHAR(256) = NULL, @Help BIT = 0
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)
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AS
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BEGIN
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IF @Help = 1 PRINT '
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/*
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sp_BlitzLock from http://FirstResponderKit.org
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This script checks for and analyzes deadlocks from the system health session or a custom extended event path
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To learn more, visit http://FirstResponderKit.org where you can download new
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versions for free, watch training videos on how it works, get more info on
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the findings, contribute your own code, and more.
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Unknown limitations of this version:
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- None. (If we knew them, they would be known. Duh.)
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Changes - for the full list of improvements and fixes in this version, see:
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https://github.com/BrentOzarULTD/SQL-Server-First-Responder-Kit/
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Parameter explanations:
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HOLD YOUR HORSES
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MIT License
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Copyright for portions of sp_Blitz are held by Microsoft as part of project
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tigertoolbox and are provided under the MIT license:
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https://github.com/Microsoft/tigertoolbox
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All other copyright for sp_BlitzLock are held by Brent Ozar Unlimited, 2017.
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Copyright (c) 2017 Brent Ozar Unlimited
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/';
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DECLARE @ProductVersion NVARCHAR(128);
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DECLARE @ProductVersionMajor FLOAT;
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DECLARE @ProductVersionMinor INT;
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SET @ProductVersion = CAST(SERVERPROPERTY('ProductVersion') AS NVARCHAR(128));
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SELECT @ProductVersionMajor = SUBSTRING(@ProductVersion, 1, CHARINDEX('.', @ProductVersion) + 1),
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@ProductVersionMinor = PARSENAME(CONVERT(VARCHAR(32), @ProductVersion), 2);
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IF @ProductVersionMajor < 11.0
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BEGIN
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RAISERROR(
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'sp_BlitzLock will throw a bunch of angry errors on versions of SQL Server earlier than 2012.',
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0,
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1) WITH NOWAIT;
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RETURN;
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END;
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IF @Top IS NULL
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SET @Top = 2147483647
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IF @StartDate IS NULL
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SET @StartDate = '19000101'
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IF @EndDate IS NULL
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SET @EndDate = '99991231'
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IF OBJECT_ID('tempdb..#deadlock_data') IS NOT NULL
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DROP TABLE #deadlock_data;
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IF OBJECT_ID('tempdb..#deadlock_process') IS NOT NULL
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DROP TABLE #deadlock_process;
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IF OBJECT_ID('tempdb..#deadlock_stack') IS NOT NULL
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DROP TABLE #deadlock_stack;
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IF OBJECT_ID('tempdb..#deadlock_resource') IS NOT NULL
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DROP TABLE #deadlock_resource;
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IF OBJECT_ID('tempdb..#deadlock_owner_waiter') IS NOT NULL
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DROP TABLE #deadlock_owner_waiter;
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IF OBJECT_ID('tempdb..#deadlock_findings') IS NOT NULL
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DROP TABLE #deadlock_findings;
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CREATE TABLE #deadlock_findings
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(
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id INT IDENTITY(1, 1) PRIMARY KEY CLUSTERED,
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check_id INT NOT NULL,
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database_name NVARCHAR(256),
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object_name NVARCHAR(1000),
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finding NVARCHAR(4000),
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query_text XML
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);
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/*Grab the initial set of XML to parse*/
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WITH xml
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AS ( SELECT CONVERT(XML, event_data) AS deadlock_xml
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FROM sys.fn_xe_file_target_read_file('system_health*.xel', NULL, NULL, NULL) )
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SELECT TOP ( @Top ) xml.deadlock_xml
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INTO #deadlock_data
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FROM xml
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WHERE xml.deadlock_xml.value('(/event/@name)[1]', 'VARCHAR(255)') = 'xml_deadlock_report'
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AND xml.deadlock_xml.value('(/event/@timestamp)[1]', 'datetime') >= @StartDate
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AND xml.deadlock_xml.value('(/event/@timestamp)[1]', 'datetime') < @EndDate;
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/*Parse process and input buffer XML*/
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SELECT dd.deadlock_xml.value('(event/@timestamp)[1]', 'DATETIME2') AS event_date,
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ca.dp.value('@id', 'NVARCHAR(256)') AS id,
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ca.dp.value('@currentdb', 'BIGINT') AS database_id,
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ca.dp.value('@logused', 'BIGINT') AS log_used,
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ca.dp.value('@waitresource', 'NVARCHAR(256)') AS wait_resource,
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ca.dp.value('@waittime', 'BIGINT') AS wait_time,
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ca.dp.value('@transactionname', 'NVARCHAR(256)') AS transaction_name,
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ca.dp.value('@lasttranstarted', 'DATETIME2(7)') AS last_tran_started,
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ca.dp.value('@lastbatchstarted', 'DATETIME2(7)') AS last_batch_started,
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ca.dp.value('@lastbatchcompleted', 'DATETIME2(7)') AS last_batch_completed,
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ca.dp.value('@lockMode', 'NVARCHAR(256)') AS lock_mode,
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ca.dp.value('@trancount', 'BIGINT') AS transaction_count,
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ca.dp.value('@clientapp', 'NVARCHAR(256)') AS client_app,
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ca.dp.value('@hostname', 'NVARCHAR(256)') AS host_name,
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ca.dp.value('@loginname', 'NVARCHAR(256)') AS login_name,
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ca.dp.value('@isolationlevel', 'NVARCHAR(256)') AS isolation_level,
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ca2.ib.query('.') AS input_buffer,
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ca.dp.query('.') AS process_xml
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INTO #deadlock_process
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FROM #deadlock_data AS dd
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CROSS APPLY dd.deadlock_xml.nodes('//deadlock/process-list/process') AS ca(dp)
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CROSS APPLY dd.deadlock_xml.nodes('//deadlock/process-list/process/inputbuf') AS ca2(ib);
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/*Parse execution stack XML*/
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SELECT dp.id,
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ca.dp.value('@procname', 'NVARCHAR(256)') AS proc_name,
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ca.dp.value('@sqlhandle', 'NVARCHAR(128)') AS sql_handle
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INTO #deadlock_stack
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FROM #deadlock_process AS dp
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CROSS APPLY dp.process_xml.nodes('//executionStack/frame') AS ca(dp);
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/*Grab the full resource list*/
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SELECT ca.dp.query('.') AS resource_xml
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INTO #deadlock_resource
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FROM #deadlock_data AS dd
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CROSS APPLY dd.deadlock_xml.nodes('//deadlock/resource-list') AS ca(dp);
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/*This parses object locks*/
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SELECT ca.dr.value('@dbid', 'BIGINT') AS database_id,
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ca.dr.value('@objectname', 'NVARCHAR(256)') AS object_name,
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ca.dr.value('@mode', 'NVARCHAR(256)') AS lock_mode,
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w.l.value('@id', 'NVARCHAR(256)') AS waiter_id,
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w.l.value('@mode', 'NVARCHAR(256)') AS waiter_mode,
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o.l.value('@id', 'NVARCHAR(256)') AS owner_id,
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o.l.value('@mode', 'NVARCHAR(256)') AS owner_mode
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INTO #deadlock_owner_waiter
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FROM #deadlock_resource AS dr
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CROSS APPLY dr.resource_xml.nodes('//resource-list/objectlock') AS ca(dr)
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CROSS APPLY ca.dr.nodes('//waiter-list/waiter') AS w(l)
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CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l);
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/*This parses page locks*/
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INSERT #deadlock_owner_waiter
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SELECT ca.dr.value('@dbid', 'BIGINT') AS database_id,
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ca.dr.value('@objectname', 'NVARCHAR(256)') AS object_name,
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ca.dr.value('@mode', 'NVARCHAR(256)') AS lock_mode,
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w.l.value('@id', 'NVARCHAR(256)') AS waiter_id,
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w.l.value('@mode', 'NVARCHAR(256)') AS waiter_mode,
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o.l.value('@id', 'NVARCHAR(256)') AS owner_id,
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o.l.value('@mode', 'NVARCHAR(256)') AS owner_mode
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FROM #deadlock_resource AS dr
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CROSS APPLY dr.resource_xml.nodes('//resource-list/pagelock') AS ca(dr)
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CROSS APPLY ca.dr.nodes('//waiter-list/waiter') AS w(l)
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CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l);
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/*This parses key locks*/
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INSERT #deadlock_owner_waiter
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SELECT ca.dr.value('@dbid', 'BIGINT') AS database_id,
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ca.dr.value('@objectname', 'NVARCHAR(256)') AS object_name,
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ca.dr.value('@mode', 'NVARCHAR(256)') AS lock_mode,
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w.l.value('@id', 'NVARCHAR(256)') AS waiter_id,
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w.l.value('@mode', 'NVARCHAR(256)') AS waiter_mode,
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o.l.value('@id', 'NVARCHAR(256)') AS owner_id,
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o.l.value('@mode', 'NVARCHAR(256)') AS owner_mode
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FROM #deadlock_resource AS dr
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CROSS APPLY dr.resource_xml.nodes('//resource-list/keylock') AS ca(dr)
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CROSS APPLY ca.dr.nodes('//waiter-list/waiter') AS w(l)
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CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l);
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/*This parses rid locks*/
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INSERT #deadlock_owner_waiter
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SELECT ca.dr.value('@dbid', 'BIGINT') AS database_id,
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ca.dr.value('@objectname', 'NVARCHAR(256)') AS object_name,
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ca.dr.value('@mode', 'NVARCHAR(256)') AS lock_mode,
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w.l.value('@id', 'NVARCHAR(256)') AS waiter_id,
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w.l.value('@mode', 'NVARCHAR(256)') AS waiter_mode,
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o.l.value('@id', 'NVARCHAR(256)') AS owner_id,
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o.l.value('@mode', 'NVARCHAR(256)') AS owner_mode
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FROM #deadlock_resource AS dr
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CROSS APPLY dr.resource_xml.nodes('//resource-list/ridlock') AS ca(dr)
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CROSS APPLY ca.dr.nodes('//waiter-list/waiter') AS w(l)
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CROSS APPLY ca.dr.nodes('//owner-list/owner') AS o(l);
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/*Begin checks based on parsed values*/
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/*Check 1 is deadlocks by database*/
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INSERT #deadlock_findings ( check_id, database_name, object_name, finding, query_text )
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SELECT 1 AS check_id,
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DB_NAME(dow.database_id) AS database_name,
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NULL AS object_name,
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'This database had '
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+ CONVERT(NVARCHAR(20), COUNT_BIG(DISTINCT dow.owner_id))
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+ ' deadlocks.',
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NULL AS query_text
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FROM #deadlock_owner_waiter AS dow
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GROUP BY DB_NAME(dow.database_id)
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/*Check 2 is deadlocks by object*/
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INSERT #deadlock_findings ( check_id, database_name, object_name, finding, query_text )
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SELECT 2 AS check_id,
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DB_NAME(dow.database_id) AS database_name,
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dow.object_name AS object_name,
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'This object had '
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+ CONVERT(NVARCHAR(20), COUNT_BIG(DISTINCT dow.owner_id))
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+ ' deadlocks.',
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NULL AS query_text
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FROM #deadlock_owner_waiter AS dow
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GROUP BY DB_NAME(dow.database_id), dow.object_name
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SELECT df.id, df.check_id, df.database_name, df.object_name, df.finding, df.query_text
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FROM #deadlock_findings AS df
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ORDER BY df.check_id
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IF @Debug = 1
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BEGIN
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SELECT '#deadlock_data' AS table_name, *
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FROM #deadlock_data AS dd;
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SELECT '#deadlock_owner_waiter' AS table_name, *
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FROM #deadlock_owner_waiter AS dow;
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SELECT '#deadlock_process' AS table_name, *
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FROM #deadlock_process AS dp;
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SELECT '#deadlock_resource' AS table_name, *
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FROM #deadlock_resource AS dr;
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SELECT '#deadlock_stack' AS table_name, *
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FROM #deadlock_stack AS ds;
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END; -- End debug
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END; --Final End
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GO
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EXEC dbo.sp_BlitzLock @Debug = 1;
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