オブジェクト名とインデックス名がデッドロックグラフに入力されないのはなぜですか？
2008 SP3サーバー（10.0.5500.0-Enterprise Edition（64ビット））でいくつかのエラーをチェックアウトし、以前に発生していたデッドロックを見つけることができるかどうかを確認するように要求されました。
トレースフラグ1222は有効にされておらず、サーバーの所有者も有効にしたくありませんでした。拡張イベントを使用し、次のクエリを使用していくつかの情報を引き出しました。
SELECT CAST(event_data.value('(event/data/value)[1]',
'varchar(max)') AS XML) AS DeadlockGraph
FROM ( SELECT XEvent.query('.') AS event_data
FROM ( -- Cast the target_data to XML
SELECT CAST(target_data AS XML) AS TargetData
FROM sys.dm_xe_session_targets st
JOIN sys.dm_xe_sessions s
ON s.address = st.event_session_address
WHERE name = 'system_health'
AND target_name = 'ring_buffer'
) AS Data -- Split out the Event Nodes
CROSS APPLY TargetData.nodes('RingBufferTarget/
event[@name="xml_deadlock_report"]')
AS XEventData ( XEvent )
) AS tab ( event_data )
次のような多くの情報を受け取りました。
<deadlock>
<victim-list>
<victimProcess id="process14846ccbc8" />
</victim-list>
<process-list>
<process id="process14846ccbc8" taskpriority="0" logused="0" waitresource="KEY: 25:72057594099728384 (0800dfc12261)" waittime="2842" ownerId="7035766745" transactionname="UPDATE" lasttranstarted="2012-11-20T07:50:25.023" XDES="0x14d9ade3b0" lockMode="U" schedulerid="8" kpid="17268" status="background" spid="19" sbid="0" ecid="0" priority="0" trancount="2">
<executionStack>
<frame procname="" line="53" stmtstart="2674" stmtend="2980" sqlhandle="0x030019002cf5fc35c2449200d2a000000100000000000000" />
</executionStack>
<inputbuf />
</process>
<process id="process3d9bdc8" taskpriority="0" logused="224" waitresource="KEY: 25:72057594099793920 (2f00faaf5d8e)" waittime="2315" ownerId="7035765940" transactionname="user_transaction" lasttranstarted="2012-11-20T07:50:24.913" XDES="0xdad541970" lockMode="U" schedulerid="6" kpid="15448" status="background" spid="23" sbid="0" ecid="0" priority="0" trancount="2">
<executionStack>
<frame procname="" line="549" stmtstart="32736" stmtend="33274" sqlhandle="0x03001900b9667f2bc41ade003ea000000100000000000000" />
<frame procname="" line="549" stmtstart="34038" stmtend="35374" sqlhandle="0x03001900f28a732c051bde003ea000000100000000000000" />
<frame procname="" line="81" stmtstart="4284" stmtend="4392" sqlhandle="0x030019002cf5fc35c2449200d2a000000100000000000000" />
</executionStack>
<inputbuf />
</process>
</process-list>
<resource-list>
<keylock hobtid="72057594099728384" dbid="25" objectname="" indexname="" id="lock6b6a4ba00" mode="X" associatedObjectId="72057594099728384">
<owner-list>
<owner id="process3d9bdc8" mode="X" />
</owner-list>
<waiter-list>
<waiter id="process14846ccbc8" mode="U" requestType="wait" />
</waiter-list>
</keylock>
<keylock hobtid="72057594099793920" dbid="25" objectname="" indexname="" id="lock74edcf180" mode="U" associatedObjectId="72057594099793920">
<owner-list>
<owner id="process14846ccbc8" mode="U" />
</owner-list>
<waiter-list>
<waiter id="process3d9bdc8" mode="U" requestType="wait" />
</waiter-list>
</keylock>
</resource-list>
</deadlock>
Objectname = "" indexname = ""の場合、どのようにしてデッドロックを見つけることができますか？
なぜ情報が欠けているのかはわかりませんが、どうやって抽出するかは指摘できます。
まず、そのデータベースに移動します。
SELECT DB_NAME(25);
その結果を取って：
USE <db_name>;
次に、これらのhobt_idが何を表すかを調べます。
SELECT OBJECT_SCHEMA_NAME(object_id), OBJECT_NAME(object_id)
FROM sys.partitions
WHERE hobt_id IN (72057594099728384, 72057594099793920);
以下を使用して、関連するバッチを見つけることもできます（それらがまだ存在する場合）。
SELECT * FROM sys.dm_exec_sql_text(0x03001900b9667f2bc41ade003ea000000100000000000000);
SELECT * FROM sys.dm_exec_sql_text(0x03001900f28a732c051bde003ea000000100000000000000);
SELECT * FROM sys.dm_exec_sql_text(0x030019002cf5fc35c2449200d2a000000100000000000000);
オフセットはExecutionStackにあるため、必要に応じて、その出力をさらに詳しくドリルできます（オフセットをオンラインで使用する多くの例）。
[〜＃〜] edit [〜＃〜] Sandwiches氏は、次のConnectアイテム（使用できなくなりました）を指摘しました。Microsoftは、このバグはSQL Server 2012で修正されていると述べています。 2008/R2で修正される予定です。
http://connect.Microsoft.com/SQLServer/feedback/details/635391/objectname-indexname-not-populated-in-deadlock-graph-in-sql2008-sp1-and-sql2008-r2
Aaronがすでに言ったように、これはSQL Server 2008/2008 R2のバグが原因です。このバグは、以降のバージョンで修正済みとしてマークされています。 SQL 2008/2008 R2では修正されません。
イベントバッファーからデッドロックをプルし、可能な場合は不足している情報を追加し、デッドロックグラフを.xdlファイルとして書き出すために記述したPowerShellスクリプトがあります。 .xdlファイルは、テキストエディターまたはSQL Server Management Studio 2012以降で開くことができます。以下のコードはPowerShell 3.0で動作します。ファイルを.psm1として保存すると、Import-Moduleを使用してインポートでき、コマンドレットGet-SqlDeadlockHistoryが提供されます。このスクリプトは、それ以降のバージョンのSQL Serverでも機能します。
また、PowerShell 2.0で動作するバージョンと共に、元のバグの回避策としてこれを投稿しました。ここに投稿したバージョンにはいくつかの改善が含まれています。残念ながら、元のバグに投稿した回避策を編集して一致させることはできません。
# Begin hexadecimal conversion function
function ConvertFrom-Hexadecimal([string] $hexString)
{
[byte[]] $data = @()
if ([string]::IsNullOrEmpty($hexString) -eq $true -or $hexString.Length % 2 -ne 0)
{
throw New-Object FormatException("Hexadecimal string must not be empty and must contain an even number of digits to be valid.");
}
$hexString = $hexString.ToUpperInvariant()
$data = New-Object byte[] -ArgumentList ($hexString.Length / 2)
for ([int] $index = 0; $index -lt $hexString.Length; $index += 2)
{
[int] $highDigitValue = if ($hexString[$index] -le ([char] '9')) { $hexString[$index] - ([char] '0') } else { $hexString[$index] - ([char] 'A') + 10 }
[int] $lowDigitValue = if ($hexString[$index + 1] -le ([char] '9')) { $hexString[$index + 1] - ([char] '0') } else { $hexString[$index + 1] - ([char] 'A') + 10 }
if ($highDigitValue -lt 0 -or $lowDigitValue -lt 0 -or $highDigitValue -gt 15 -or $lowDigitValue -gt 15)
{
throw New-Object FormatException("An invalid digit was encountered. Valid hexadecimal digits are 0-9 and A-F.")
}
else
{
[byte] $value = [byte](($highDigitValue -shl 4) -bor ($lowDigitValue -band 0x0F))
$data[$index / 2] = $value;
}
}
return ,$data
}
# End hexadecimal conversion function
function Get-SqlDeadlockHistory
{
<#
.SYNOPSIS
Gets the deadlock history from the system health extended events on the specified SQL Server instance.
.DESCRIPTION
Gets the deadlock history from the system health extended events on the specified SQL Server instance and writes them to the specified folder or to a Deadlocks directory in the current user's documents folder if no folder is specified.
When the process completes, SQL server startup date, most recent deadlock date, total number of deadlocks, and number of deadlock graph files written will be displayed.
.EXAMPLE
Get-SqlDeadlockHistory "SqlServerName\Instance"
.EXAMPLE
Get-SqlDeadlockHistory "SqlServerName"
.PARAMETER $SqlServerInstance
The SQL Server name and instance that Get-SqlDeadlockHistory will connect to.
.PARAMETER $UserName
If specified a SQL autenticated account will be used to connect to the SQL Server instance.
.PARAMETER $Password
If a UserName has been specified, uses the given password for the SQL authenticated account; otherwise, the user will be prompted for a password. If UserName has not been specified, this parameter is ignored.
.PARAMETER $OutputDirectory
If specified the deadlock files will be written to the given directory; otherwise, deadlock files are written to Deadlocks\<SqlServerInstance> under the current user's My Documents folder.
.PARAMETER $Overwrite
If Overwrite is present deadlock files will overwrite any pre-existing deadlock files that have the same name; otherwise, deadlocks corresponding to pre-exsiting files will be skipped.
#>
[CmdletBinding(SupportsShouldProcess = $false)]
param
(
[Parameter(Mandatory = $true, ValueFromPipeLine = $true)]
[string] $SqlServerInstance,
[Parameter(Mandatory = $false, ValueFromPipeLine = $false)]
[string] $UserName = $null,
[Parameter(Mandatory = $false, ValueFromPipeLine = $false)]
[string] $Password = $null,
[Parameter(Mandatory = $false, ValueFromPipeLine = $false)]
[string] $OutputDirectory = $null,
[switch] $Overwrite
)
process
{
if (([string]::IsNullOrWhiteSpace($OutputDirectory) -eq $true) -or ((Test-Path $OutputDirectory -PathType Container) -eq $false))
{
$OutputDirectory = Join-Path $env:USERPROFILE "Documents\Deadlocks\$($SqlServerInstance.Replace(":", "_"))"
}
Write-Host "Deadlock events will be retrieved from $($SqlServerInstance) and written to $($OutputDirectory)."
[System.Data.SqlClient.SqlConnectionStringBuilder] $connectionStringBuilder = New-Object "System.Data.SqlClient.SqlConnectionStringBuilder"
$connectionStringBuilder.PSBase.DataSource = $SqlServerInstance
$connectionStringBuilder.PSBase.InitialCatalog = "master"
if ($PSBoundParameters.ContainsKey("UserName") -eq $true)
{
$connectionStringBuilder.PSBase.UserID = $UserName
if ($PSBoundParameters.ContainsKey("Password") -eq $true)
{
$connectionStringBuilder.PSBase.Password = $Password
}
else
{
$connectionStringBuilder.PSBase.Password = (Read-Host "Password: ")
}
}
else
{
$connectionStringBuilder.PSBase.IntegratedSecurity = $true
}
$connectionStringBuilder.PSBase.WorkstationID = $env:COMPUTERNAME
$connectionStringBuilder.PSBase.ApplicationName = $MyInvocation.MyCommand.Name
if ((Test-Path $outputDirectory -PathType Container) -eq $false)
{
New-Item $outputDirectory -ItemType Container
}
[string] $startTimeQuery = "SELECT sqlserver_start_time FROM sys.dm_os_sys_info"
[string] $deadlockQuery = "SELECT ringBuffer.event.value(N'./@timestamp', N'datetimeoffset') AS timestamp
, CONVERT(xml, CASE WHEN CONVERT(varchar(3), SERVERPROPERTY(N'ProductVersion')) = '10.' THEN ringBuffer.event.value(N'(./data/value/node())[1]', N'nvarchar(MAX)') ELSE ringBuffer.event.query(N'(./data/value/node())[1]') END) AS deadlockGraph
FROM (
SELECT CONVERT(xml, sys.dm_xe_session_targets.target_data) AS target_data
FROM sys.dm_xe_session_targets INNER JOIN
sys.dm_xe_sessions ON sys.dm_xe_session_targets.event_session_address = sys.dm_xe_sessions.address
WHERE (sys.dm_xe_sessions.name = 'system_health')
) AS sessionTarget
CROSS APPLY sessionTarget.target_data.nodes(N'/RingBufferTarget/event[@name=`"xml_deadlock_report`"]') AS ringBuffer(event)"
[string] $partitionQuery = "CREATE TABLE #allPartitions
(
partition_id bigint NOT NULL,
database_id int NOT NULL,
hobt_id bigint NOT NULL,
object_id int NOT NULL,
index_id int NOT NULL,
database_name sysname NOT NULL,
object_schema_name sysname NOT NULL,
object_name sysname NOT NULL,
index_name sysname NULL
)
ALTER TABLE dbo.#allPartitions ADD CONSTRAINT
PK_#allPartitions PRIMARY KEY CLUSTERED
(
database_id,
partition_id
) WITH( STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
DECLARE @partitionQuery nvarchar(2000)
DECLARE @dbName sysname
SET @partitionQuery = 'USE [?];
INSERT INTO [#allPartitions]
(partition_id, database_id, hobt_id, object_id, index_id, database_name, object_schema_name, object_name, index_name)
SELECT sys.partitions.partition_id, DB_ID(N''?'') AS database_id, sys.partitions.hobt_id, sys.partitions.object_id, sys.partitions.index_id, ''?'' AS database_name,
OBJECT_SCHEMA_NAME(sys.partitions.object_id) AS object_schema_name, OBJECT_NAME(sys.partitions.object_id) AS object_name, sys.indexes.name AS index_name
FROM sys.partitions LEFT OUTER JOIN
sys.indexes ON sys.indexes.object_id = sys.partitions.object_id AND sys.indexes.index_id = sys.partitions.index_id'
EXEC sp_MSforeachdb @partitionQuery
SELECT partition_id, database_id, hobt_id, object_id, index_id, database_name, object_schema_name, object_name, index_name
FROM #allPartitions
DROP TABLE #allPartitions
"
[string] $objectQuery = "
CREATE TABLE #allObjects
(
database_id int NOT NULL,
object_id int NOT NULL,
database_name sysname NOT NULL,
object_schema_name sysname NOT NULL,
object_name sysname NOT NULL
)
ALTER TABLE dbo.#allObjects ADD CONSTRAINT
PK_#allObjects PRIMARY KEY CLUSTERED
(
database_id,
object_id
) WITH( STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
DECLARE @objectQuery nvarchar(2000)
DECLARE @dbName sysname
SET @objectQuery = 'USE [?];
INSERT INTO [#allObjects]
(database_id, object_id, database_name, object_schema_name, object_name)
SELECT DB_ID(N''?'') AS database_id, object_id, ''?'' AS database_name, SCHEMA_NAME(schema_id) AS object_schema_name,
name AS object_name
FROM sys.objects'
EXEC sp_MSforeachdb @objectQuery
SELECT database_id, object_id, database_name, object_schema_name, object_name
FROM #allObjects
DROP TABLE #allObjects
"
$sqlTextQuery = "SELECT dbid, objectid, text FROM sys.dm_exec_sql_text(@sqlHandle)"
[System.Data.SqlClient.SqlConnection] $connection = New-Object "System.Data.SqlClient.SqlConnection" -ArgumentList @($connectionStringBuilder.ConnectionString)
[System.Data.SqlClient.SqlCommand] $startTimeQueryCommand = $connection.CreateCommand()
$startTimeQueryCommand.CommandText = $startTimeQuery
$startTimeQueryCommand.CommandType = [System.Data.CommandType]::Text
[System.Data.SqlClient.SqlCommand] $deadlockQueryCommand = $connection.CreateCommand()
$deadlockQueryCommand.CommandText = $deadlockQuery
$deadlockQueryCommand.CommandType = [System.Data.CommandType]::Text
[System.Data.SqlClient.SqlDataAdapter] $deadlockQueryDataAdapter = New-Object "System.Data.SqlClient.SqlDataAdapter" -ArgumentList $deadlockQueryCommand
[System.Data.DataTable] $deadlockTable = New-Object "System.Data.DataTable"
[System.Data.SqlClient.SqlCommand] $partitionQueryCommand = $connection.CreateCommand()
$partitionQueryCommand.CommandText = $partitionQuery
$partitionQueryCommand.CommandType = [System.Data.CommandType]::Text
[System.Data.SqlClient.SqlDataAdapter] $partitionQueryDataAdapter = New-Object "System.Data.SqlClient.SqlDataAdapter" -ArgumentList $partitionQueryCommand
[System.Data.DataTable] $partitionTable = New-Object "System.Data.DataTable"
[System.Data.SqlClient.SqlCommand] $objectQueryCommand = $connection.CreateCommand()
$objectQueryCommand.CommandText = $objectQuery
$objectQueryCommand.CommandType = [System.Data.CommandType]::Text
[System.Data.SqlClient.SqlDataAdapter] $objectQueryDataAdapter = New-Object "System.Data.SqlClient.SqlDataAdapter" -ArgumentList $objectQueryCommand
[System.Data.DataTable] $objectTable = New-Object "System.Data.DataTable"
[System.Data.SqlClient.SqlCommand] $sqlTextQueryCommand = $connection.CreateCommand()
$sqlTextQueryCommand.CommandText = $sqlTextQuery
$sqlTextQueryCommand.CommandType = [System.Data.CommandType]::Text
$sqlTextSqlHandleParam = $sqlTextQueryCommand.Parameters.Add("@sqlHandle", [System.Data.SqlDbType]::VarBinary, 64)
Write-Verbose "Connecting to $($SqlServerInstance)."
$connection.Open()
Write-Verbose "Getting SQL Server start time."
[DateTime] $startTime = $startTimeQueryCommand.ExecuteScalar()
Write-Verbose "Getting SQL deadlock events from the ring buffer."
[int] $deadlockRowsReturned = $deadlockQueryDataAdapter.Fill($deadlockTable)
Write-Verbose "Getting partiton information."
[int] $partitionRowsReturned = $partitionQueryDataAdapter.Fill($partitionTable)
Write-Verbose "Getting object information."
[int] $objectRowsReturned = $objectQueryDataAdapter.Fill($objectTable)
$startTimeQueryCommand.Dispose()
$deadlockQueryDataAdapter.Dispose()
$deadlockQueryCommand.Dispose()
$partitionQueryDataAdapter.Dispose()
$partitionQueryCommand.Dispose()
$objectQueryDataAdapter.Dispose()
$objectQueryCommand.Dispose()
$deadlocksWritten = 0
[DateTimeOffset] $mostRecentDeadlock = [DateTimeOffset]::MinValue
[int] $deadlockCount = $deadlockTable.Rows.Count
[int] $deadlockItem = 0;
Write-Verbose "Processing deadlock $($deadlockCount) graphs."
ForEach ($deadlockRow in $deadlockTable.Rows)
{
Write-Progress -Id 1 -Activity "Processing Deadlock Graphs" -PercentComplete ($deadlockItem / $deadlockCount * 100)
$deadlockItem++
$deadlockLocalTime = $deadlockRow.timestamp.ToLocalTime()
if ($deadlockLocalTime -gt $mostRecentDeadlock)
{
$mostRecentDeadlock = $deadlockLocalTime
}
[string] $xdlFileName = "Deadlock_$($deadlockLocalTime.ToString("yyyyMMdd_HHmmss_fff")).xdl"
[string] $xdlFilePath = Join-Path $OutputDirectory $xdlFileName
Write-Verbose "Using deadlock graph file $($xdlFileName)."
if (((Test-Path $xdlFilePath) -eq $false) -or ($Overwrite -eq $true))
{
[XML] $deadlockGraphDocument = $deadlockRow.deadlockGraph
$missingObjectNameNodes = $deadlockGraphDocument.deadlock.'resource-list'.SelectNodes("child::node()[@objectname='']")
Write-Verbose "Found $($missingObjectNameNodes.Count) resource node(s) with no object names."
ForEach ($missingObjectNameNode in $missingObjectNameNodes)
{
$objectName = $null
$indexName = $null
if ($missingObjectNameNode.hobtid -ne $null)
{
Write-Verbose "Looking up Heap or B-Tree ID $($missingObjectNameNode.hobtid)."
$objectRow = $partitionTable.Where({ ($_.hobt_id -eq $missingObjectNameNode.hobtid) -and ($_.database_id -eq $missingObjectNameNode.dbid) })
$objectName = "$($objectRow.database_name).$($objectRow.object_schema_name).$($objectRow.object_name)"
$indexName = $objectRow.index_name
}
elseif ($missingObjectNameNode.associatedObjectId -ne $null)
{
Write-Verbose "Looking up Partition ID $($missingObjectNameNode.associatedObjectId)."
$objectRow = $partitionTable.Where({ ($_.partition_id -eq $missingObjectNameNode.associatedObjectId) -and ($_.database_id -eq $missingObjectNameNode.dbid) })
$objectName = "$($objectRow.database_name).$($objectRow.object_schema_name).$($objectRow.object_name)"
}
if ($objectName -ne $null)
{
Write-Verbose "Found object $($objectName)."
$missingObjectNameNode.objectname = $objectName
}
if ($indexName -ne $null)
{
Write-Verbose "Found index $($indexName)."
$missingObjectNameNode.indexname = $indexName
}
}
$executionStackFrames = $deadlockGraphDocument.deadlock.'process-list'.SelectNodes('//process/executionStack/frame[@procname="" or text() = "" or normalize-space(text())="unknown" or contains(text(), "*password----")]')
Write-Verbose "Found $($executionStackFrames.Count) execution stack frame(s) with no proc name or no statement text."
ForEach ($executionStackFrame in $executionStackFrames)
{
if ([string]::IsNullOrWhiteSpace($executionStackFrame.sqlhandle) -eq $false)
{
Write-Verbose "Looking up sql handle $($executionStackFrame.sqlhandle)."
$sqlTextSqlHandleParam.Value = ConvertFrom-Hexadecimal $executionStackFrame.sqlhandle.Replace("0x", "")
$sqlTextReader = $sqlTextQueryCommand.ExecuteReader()
if ($sqlTextReader.HasRows -eq $true)
{
$currentDatabaseID = $executionStackFrame.ParentNode.ParentNode.currentdb
$rowAvailable = $sqlTextReader.Read()
$dbid = $sqlTextReader["dbid"]
$objectID = $sqlTextReader["objectid"]
$queryText = $sqlTextReader["text"]
if ([string]::IsNullOrWhitespace($executionStackFrame.procname) -eq $true -and $objectID -ne $null -and $objectID -ne [System.DBNull]::Value)
{
if ($dbid -eq $null -or $dbid -eq [System.DBNull]::Value)
{
$dbid = $currentDatabaseID
}
$procRow = $objectTable.Where({ ($_.database_id -eq $currentDatabaseID) -and ($_.object_id -eq $objectID) })
$procName = "$($procRow.database_name).$($procRow.object_schema_name).$($procRow.object_name)"
Write-Verbose "Found proc $($procName)."
$executionStackFrame.procname = $procName
}
$isQueryTextMissing = [string]::IsNullOrWhitespace($executionStackFrame.InnerText) -eq $true -or $executionStackFrame.InnerText.Trim() -eq "unknown" -or $executionStackFrame.InnerText -match "\*password-+\s*$"
$hasQueryLookupResult = $queryText -ne $null -and $queryText -ne [DBNull]::Value
if ($isQueryTextMissing -eq $true -and $hasQueryLookupResult -eq $true)
{
$statementStart = 0
if ([string]::IsNullOrWhiteSpace($executionStackFrame.stmtstart) -eq $false)
{
$statementStart = [int]::Parse($executionStackFrame.stmtstart) / 2
}
$statementEnd = $queryText.Length - 1
if ([string]::IsNullOrWhiteSpace($executionStackFrame.stmtend) -eq $false -and $executionStackFrame.stmtend -ne '-1')
{
$statementEnd = [int]::Parse($executionStackFrame.stmtend) / 2
}
$statementLength = ($statementEnd - $statementStart) + 1
$statementText = $queryText.Substring($statementStart, $statementLength)
Write-Verbose "Found statement text."
$executionStackFrame.InnerText = $statementText
}
}
$sqlTextReader.Close()
$sqlTextReader.Dispose()
}
}
Write-Verbose "Writing deadlock graph to file."
[System.Xml.XmlWriterSettings] $xdlWriterSettings = New-Object "System.Xml.XmlWriterSettings"
$xdlWriterSettings.OmitXmlDeclaration = $false
$xdlWriterSettings.Indent = $true
$xdlWriterSettings.NewLineHandling = [System.Xml.NewLineHandling]::Replace
$xdlWriterSettings.CloseOutput = $true
[System.Xml.XmlWriter] $xdlWriter = [System.Xml.XmlWriter]::Create($xdlFilePath, $xdlWriterSettings)
$deadlockGraphDocument.Save($xdlWriter)
$xdlWriter.Close()
$xdlWriter.Dispose()
$deadlocksWritten++
}
else
{
Write-Verbose "Pre-existing deadlock graph file will not be overwritten."
}
}
Write-Progress -Id 1 -Activity "Processing Deadlock Graphs" -Completed
$sqlTextQueryCommand.Dispose()
$connection.Close()
$connection.Dispose()
$deadlockTable.Dispose()
$partitionTable.Dispose()
$objectTable.Dispose()
Write-Host "$($SqlServerInstance) up since $($startTime)."
if ($mostRecentDeadlock -gt [DateTimeOffset]::MinValue)
{
Write-Host "Most recent deadlock occurred at $($mostRecentDeadlock)."
}
Write-Host "$($deadlocksWritten) of $($deadlockRowsReturned) deadlock graphs written to $($outputDirectory)."
}
}