監視 SQL Server 2000 阻塞
呼叫一個使用者定義的SP，生成對阻塞的監控資訊。
對“sp_blocker_pss80”儲存過程的下列描述可捕獲此資訊：
| • | 開始時間（視執行 SQL Server 的計算機而定），以便此阻塞取樣在時間上可以與其他效能資訊（如 Microsoft Windows NT 效能監視器日誌或 SQL 事件探查器日誌）一致。 |
| • | 有關與 SQL Server 的連線的資訊，透過查詢“sysprocesses”系統表獲取。 |
| • | 有關鎖定資源的資訊，透過查詢“syslockinfo”系統表獲取。 |
| • | 有關資源等待的資訊，透過執行 DBCC SQLPERF(WAITSTATS) 獲取。 |
| • | 用於連線（被其他連線阻塞或者阻塞其他連線）的當前正在執行的 SQL Server 批處理，透過執行 DBCC INPUTBUFFER 語句獲取。 |
| • | 結束時間，視執行 SQL Server 的計算機而定。 |
| • | 除非至少有一個連線在等待資源，否則不生成輸出。 |
| • | 直接查詢“master”資料庫中的“sysprocesses”和“syslockinfo”系統表，以提高效能並防止此儲存過程被阻塞。因此，此儲存過程是特定於 Microsoft SQL Server 2000 的。 |
| • | 使用游標建立一個小工作表來獲取 DBCC INPUTBUFFER 輸出，這對在“tempdb”資料庫中的使用應沒有太大的影響。 |
| • | 由於收集資訊時阻塞可以更改，因此存在一種快速模式，該模式可將所得到的結果降至“sysprocesses”和“syslockinfo”系統表的相關行，從而提高了效能。 |
| • | 如果您試圖跟蹤非鎖定資源等待，則存在一種鎖存模式，該模式可導致鎖定輸出被忽略。 |
此儲存過程從任何查詢工具執行都十分有用。但是，Microsoft 建議您按照下列步驟來執行阻塞分析：
1. 當使用對計劃要監視的 SQL Server 伺服器或 SQL Server 例項具有“sysadmin”特權的登入資訊進行連線時，從任何查詢工具建立儲存過程“sp_blocker_pss80”（在本文末尾提供）。
2. 建立一個包含以下查詢的指令碼檔案以迴圈執行該儲存過程。請注意，延遲應在 5 秒和 60 秒之間：
WHILE 1=1
BEGIN
EXEC master.dbo.sp_blocker_pss80
-- Or for fast mode
-- EXEC master.dbo.sp_blocker_pss80 @fast=1
-- Or for latch mode
-- EXEC master.dbo.sp_blocker_pss80 @latch=1
WAITFOR DELAY '00:00:15'
END
GO
3. 此輸出在與 Microsoft Windows NT 效能監視器日誌和 SQL 事件探查器日誌結合時非常有用，因此建議同時建立這兩種日誌。有關要捕獲哪些事件探查器和效能監視器事件的資訊，以及有關如何解釋結果的資訊，請參見以下 Microsoft 知識庫文章：
224453 () INF：瞭解和解決 SQL Server 7.0 或 2000 阻塞問題
4. 在執行 SQL Server 的計算機（您要對其進行監視以防止網路問題導致查詢工具斷開連線）上，在 Windows 命令提示符處從 Isql.exe 或 Osql.exe 查詢工具執行在步驟 2 中建立的指令碼檔案。下面是可用於啟動 Osql.exe 的示例命令列，它假定客戶端從執行 SQL Server 的計算機執行，並且指令碼檔名為 Checkblk.sql。請務必更正 -S 引數，並將“server”替換為 SQL Server 伺服器的名稱（如果您監視的是命名例項，則替換為“servernameinstance”）。此外，還必須更正 -i 引數，並將“checkblk.sql”替換為在步驟 2 中建立的指令碼檔案的路徑和名稱。
osql -E -Sserver -icheckblk.sql -ocheckblk.out -w2000
請注意，由於下列原因，您必須使用其他命令列開關：
• 為了防止輸出檔案中出現換行（換行可使輸出檔案更易於閱讀）。
• 為了將輸出傳送到使用 -o 引數指定的檔案，而不是傳送到螢幕，以便在查詢工具出現問題時，在查詢工具失敗之前仍得到輸出。
下面是用於建立“sp_blocker_pss80”儲存過程的指令碼： 注意：在 SQL Server 2005 中，您可以配合使用 SQL 事件探查器中的“Blocked Process Report”事件類和“sp_configure”命令來配置“阻塞的程式閾值”選項。
/*
Note: This script is meant to have 2 creations of the same stored procedure and one of them will fail
with either 207 errors or a 2714 error.
*/
use master
GO
if exists (select * from sysobjects where id = object_id('dbo.sp_blocker_pss80') and sysstat & 0xf = 4)
drop procedure dbo.sp_blocker_pss80
GO
create procedure dbo.sp_blocker_pss80 (@latch int = 0, @fast int = 1, @appname sysname='PSSDIAG')
as
--version 16SP3
if is_member('sysadmin')=0
begin
print 'Must be a member of the sysadmin group in order to run this procedure'
return
end
set nocount on
SET LANGUAGE 'us_english'
declare @spid varchar(6)
declare @blocked varchar(6)
declare @time datetime
declare @time2 datetime
declare @dbname nvarchar(128)
declare @status sql_variant
declare @useraccess sql_variant
set @time = getdate()
declare @probclients table(spid smallint, ecid smallint, blocked smallint, waittype binary(2), dbid smallint,
ignore_app tinyint, primary key (blocked, spid, ecid))
insert @probclients select spid, ecid, blocked, waittype, dbid,
case when convert(varchar(128),hostname) = @appname then 1 else 0 end
from sysprocesses where blocked!=0 or waittype != 0x0000
if exists (select spid from @probclients where ignore_app != 1 or waittype != 0x020B)
begin
set @time2 = getdate()
print ''
print '8.2 Start time: ' + convert(varchar(26), @time, 121) + ' ' + convert(varchar(12), datediff(ms,@time,@time2))
insert @probclients select distinct blocked, 0, 0, 0x0000, 0, 0 from @probclients
where blocked not in (select spid from @probclients) and blocked != 0
if (@fast = 1)
begin
print ''
print 'SYSPROCESSES ' + ISNULL (@@servername,'(null)') + ' ' + str(@@microsoftversion)
select spid, status, blocked, open_tran, waitresource, waittype,
waittime, cmd, lastwaittype, cpu, physical_io,
memusage, last_batch=convert(varchar(26), last_batch,121),
login_time=convert(varchar(26), login_time,121),net_address,
net_library, dbid, ecid, kpid, hostname, hostprocess,
loginame, program_name, nt_domain, nt_username, uid, sid,
sql_handle, stmt_start, stmt_end
from master..sysprocesses
where blocked!=0 or waittype != 0x0000
or spid in (select blocked from @probclients where blocked != 0)
or spid in (select spid from @probclients where blocked != 0)
print 'ESP ' + convert(varchar(12), datediff(ms,@time2,getdate()))
print ''
print 'SYSPROC FIRST PASS'
select spid, ecid, waittype from @probclients where waittype != 0x0000
if exists(select blocked from @probclients where blocked != 0)
begin
print 'Blocking via locks at ' + convert(varchar(26), @time, 121)
print ''
print 'SPIDs at the head of blocking chains'
select spid from @probclients
where blocked = 0 and spid in (select blocked from @probclients where spid != 0)
if @latch = 0
begin
print 'SYSLOCKINFO'
select @time2 = getdate()
select spid = convert (smallint, req_spid),
ecid = convert (smallint, req_ecid),
rsc_dbid As dbid,
rsc_objid As ObjId,
rsc_indid As IndId,
Type = case rsc_type when 1 then 'NUL'
when 2 then 'DB'
when 3 then 'FIL'
when 4 then 'IDX'
when 5 then 'TAB'
when 6 then 'PAG'
when 7 then 'KEY'
when 8 then 'EXT'
when 9 then 'RID'
when 10 then 'APP' end,
Resource = substring (rsc_text, 1, 16),
Mode = case req_mode + 1 when 1 then NULL
when 2 then 'Sch-S'
when 3 then 'Sch-M'
when 4 then 'S'
when 5 then 'U'
when 6 then 'X'
when 7 then 'IS'
when 8 then 'IU'
when 9 then 'IX'
when 10 then 'SIU'
when 11 then 'SIX'
when 12 then 'UIX'
when 13 then 'BU'
when 14 then 'RangeS-S'
when 15 then 'RangeS-U'
when 16 then 'RangeIn-Null'
when 17 then 'RangeIn-S'
when 18 then 'RangeIn-U'
when 19 then 'RangeIn-X'
when 20 then 'RangeX-S'
when 21 then 'RangeX-U'
when 22 then 'RangeX-X'end,
Status = case req_status when 1 then 'GRANT'
when 2 then 'CNVT'
when 3 then 'WAIT' end,
req_transactionID As TransID, req_transactionUOW As TransUOW
from master.dbo.syslockinfo s,
@probclients p
where p.spid = s.req_spid
print 'ESL ' + convert(varchar(12), datediff(ms,@time2,getdate()))
end -- latch not set
end
else
print 'No blocking via locks at ' + convert(varchar(26), @time, 121)
print ''
end -- fast set
else
begin -- Fast not set
print ''
print 'SYSPROCESSES ' + ISNULL (@@servername,'(null)') + ' ' + str(@@microsoftversion)
select spid, status, blocked, open_tran, waitresource, waittype,
waittime, cmd, lastwaittype, cpu, physical_io,
memusage, last_batch=convert(varchar(26), last_batch,121),
login_time=convert(varchar(26), login_time,121),net_address,
net_library, dbid, ecid, kpid, hostname, hostprocess,
loginame, program_name, nt_domain, nt_username, uid, sid,
sql_handle, stmt_start, stmt_end
from master..sysprocesses
print 'ESP ' + convert(varchar(12), datediff(ms,@time2,getdate()))
print ''
print 'SYSPROC FIRST PASS'
select spid, ecid, waittype from @probclients where waittype != 0x0000
if exists(select blocked from @probclients where blocked != 0)
begin
print 'Blocking via locks at ' + convert(varchar(26), @time, 121)
print ''
print 'SPIDs at the head of blocking chains'
select spid from @probclients
where blocked = 0 and spid in (select blocked from @probclients where spid != 0)
if @latch = 0
begin
print 'SYSLOCKINFO'
select @time2 = getdate()
select spid = convert (smallint, req_spid),
ecid = convert (smallint, req_ecid),
rsc_dbid As dbid,
rsc_objid As ObjId,
rsc_indid As IndId,
Type = case rsc_type when 1 then 'NUL'
when 2 then 'DB'
when 3 then 'FIL'
when 4 then 'IDX'
when 5 then 'TAB'
when 6 then 'PAG'
when 7 then 'KEY'
when 8 then 'EXT'
when 9 then 'RID'
when 10 then 'APP' end,
Resource = substring (rsc_text, 1, 16),
Mode = case req_mode + 1 when 1 then NULL
when 2 then 'Sch-S'
when 3 then 'Sch-M'
when 4 then 'S'
when 5 then 'U'
when 6 then 'X'
when 7 then 'IS'
when 8 then 'IU'
when 9 then 'IX'
when 10 then 'SIU'
when 11 then 'SIX'
when 12 then 'UIX'
when 13 then 'BU'
when 14 then 'RangeS-S'
when 15 then 'RangeS-U'
when 16 then 'RangeIn-Null'
when 17 then 'RangeIn-S'
when 18 then 'RangeIn-U'
when 19 then 'RangeIn-X'
when 20 then 'RangeX-S'
when 21 then 'RangeX-U'
when 22 then 'RangeX-X'end,
Status = case req_status when 1 then 'GRANT'
when 2 then 'CNVT'
when 3 then 'WAIT' end,
req_transactionID As TransID, req_transactionUOW As TransUOW
from master.dbo.syslockinfo
print 'ESL ' + convert(varchar(12), datediff(ms,@time2,getdate()))
end -- latch not set
end
else
print 'No blocking via locks at ' + convert(varchar(26), @time, 121)
print ''
end -- Fast not set
print 'DBCC SQLPERF(WAITSTATS)'
dbcc sqlperf(waitstats)
Print ''
Print '*********************************************************************'
Print 'Print out DBCC Input buffer for all blocked or blocking spids.'
Print '*********************************************************************'
declare ibuffer cursor fast_forward for
select distinct cast (spid as varchar(6)) as spid
from @probclients
where (spid <> @@spid) and
((blocked!=0 or (waittype != 0x0000 and ignore_app = 0))
or spid in (select blocked from @probclients where blocked != 0))
open ibuffer
fetch next from ibuffer into @spid
while (@@fetch_status != -1)
begin
print ''
print 'DBCC INPUTBUFFER FOR SPID ' + @spid
exec ('dbcc inputbuffer (' + @spid + ')')
fetch next from ibuffer into @spid
end
deallocate ibuffer
Print ''
Print '*******************************************************************************'
Print 'Print out DBCC OPENTRAN for active databases for all blocked or blocking spids.'
Print '*******************************************************************************'
declare ibuffer cursor fast_forward for
select distinct cast (dbid as varchar(6)) from @probclients
where dbid != 0
open ibuffer
fetch next from ibuffer into @spid
while (@@fetch_status != -1)
begin
print ''
set @dbname = db_name(@spid)
set @status = DATABASEPROPERTYEX(@dbname,'Status')
set @useraccess = DATABASEPROPERTYEX(@dbname,'UserAccess')
print 'DBCC OPENTRAN FOR DBID ' + @spid + ' ['+ @dbname + ']'
if @Status = N'ONLINE' and @UserAccess != N'SINGLE_USER'
dbcc opentran(@dbname)
else
print 'Skipped: Status=' + convert(nvarchar(128),@status)
+ ' UserAccess=' + convert(nvarchar(128),@useraccess)
print ''
if @spid = '2' select @blocked = 'Y'
fetch next from ibuffer into @spid
end
deallocate ibuffer
if @blocked != 'Y'
begin
print ''
print 'DBCC OPENTRAN FOR DBID 2 [tempdb]'
dbcc opentran ('tempdb')
end
print 'End time: ' + convert(varchar(26), getdate(), 121)
end -- All
else
print '8 No Waittypes: ' + convert(varchar(26), @time, 121) + ' '
+ convert(varchar(12), datediff(ms,@time,getdate())) + ' ' + ISNULL (@@servername,'(null)')
GO
create procedure dbo.sp_blocker_pss80 (@latch int = 0, @fast int = 1, @appname sysname='PSSDIAG')
as
--version 16
if is_member('sysadmin')=0
begin
print 'Must be a member of the sysadmin group in order to run this procedure'
return
end
set nocount on
declare @spid varchar(6)
declare @blocked varchar(6)
declare @time datetime
declare @time2 datetime
declare @dbname nvarchar(128)
declare @status sql_variant
declare @useraccess sql_variant
set @time = getdate()
declare @probclients table(spid smallint, ecid smallint, blocked smallint, waittype binary(2), dbid smallint,
ignore_app tinyint, primary key (blocked, spid, ecid))
insert @probclients select spid, ecid, blocked, waittype, dbid,
case when convert(varchar(128),hostname) = @appname then 1 else 0 end
from sysprocesses where blocked!=0 or waittype != 0x0000
if exists (select spid from @probclients where ignore_app != 1 or waittype != 0x020B)
begin
set @time2 = getdate()
print ''
print '8 Start time: ' + convert(varchar(26), @time, 121) + ' ' + convert(varchar(12), datediff(ms,@time,@time2))
insert @probclients select distinct blocked, 0, 0, 0x0000, 0, 0 from @probclients
where blocked not in (select spid from @probclients) and blocked != 0
if (@fast = 1)
begin
print ''
print 'SYSPROCESSES ' + ISNULL (@@servername,'(null)') + ' ' + str(@@microsoftversion)
select spid, status, blocked, open_tran, waitresource, waittype,
waittime, cmd, lastwaittype, cpu, physical_io,
memusage,last_batch=convert(varchar(26), last_batch,121),
login_time=convert(varchar(26), login_time,121), net_address,
net_library, dbid, ecid, kpid, hostname, hostprocess,
loginame, program_name, nt_domain, nt_username, uid, sid
from master..sysprocesses
where blocked!=0 or waittype != 0x0000
or spid in (select blocked from @probclients where blocked != 0)
or spid in (select spid from @probclients where waittype != 0x0000)
print 'ESP ' + convert(varchar(12), datediff(ms,@time2,getdate()))
print ''
print 'SYSPROC FIRST PASS'
select spid, ecid, waittype from @probclients where waittype != 0x0000
if exists(select blocked from @probclients where blocked != 0)
begin
print 'Blocking via locks at ' + convert(varchar(26), @time, 121)
print ''
print 'SPIDs at the head of blocking chains'
select spid from @probclients
where blocked = 0 and spid in (select blocked from @probclients where spid != 0)
if @latch = 0
begin
print 'SYSLOCKINFO'
select @time2 = getdate()
select spid = convert (smallint, req_spid),
ecid = convert (smallint, req_ecid),
rsc_dbid As dbid,
rsc_objid As ObjId,
rsc_indid As IndId,
Type = case rsc_type when 1 then 'NUL'
when 2 then 'DB'
when 3 then 'FIL'
when 4 then 'IDX'
when 5 then 'TAB'
when 6 then 'PAG'
when 7 then 'KEY'
when 8 then 'EXT'
when 9 then 'RID'
when 10 then 'APP' end,
Resource = substring (rsc_text, 1, 16),
Mode = case req_mode + 1 when 1 then NULL
when 2 then 'Sch-S'
when 3 then 'Sch-M'
when 4 then 'S'
when 5 then 'U'
when 6 then 'X'
when 7 then 'IS'
when 8 then 'IU'
when 9 then 'IX'
when 10 then 'SIU'
when 11 then 'SIX'
when 12 then 'UIX'
when 13 then 'BU'
when 14 then 'RangeS-S'
when 15 then 'RangeS-U'
when 16 then 'RangeIn-Null'
when 17 then 'RangeIn-S'
when 18 then 'RangeIn-U'
when 19 then 'RangeIn-X'
when 20 then 'RangeX-S'
when 21 then 'RangeX-U'
when 22 then 'RangeX-X'end,
Status = case req_status when 1 then 'GRANT'
when 2 then 'CNVT'
when 3 then 'WAIT' end,
req_transactionID As TransID, req_transactionUOW As TransUOW
from master.dbo.syslockinfo s,
@probclients p
where p.spid = s.req_spid
print 'ESL ' + convert(varchar(12), datediff(ms,@time2,getdate()))
end -- latch not set
end
else
print 'No blocking via locks at ' + convert(varchar(26), @time, 121)
print ''
end -- fast set
else
begin -- Fast not set
print ''
print 'SYSPROCESSES ' + ISNULL (@@servername,'(null)') + ' ' + str(@@microsoftversion)
select spid, status, blocked, open_tran, waitresource, waittype,
waittime, cmd, lastwaittype, cpu, physical_io,
memusage,last_batch=convert(varchar(26), last_batch,121),
login_time=convert(varchar(26), login_time,121), net_address,
net_library, dbid, ecid, kpid, hostname, hostprocess,
loginame, program_name, nt_domain, nt_username, uid, sid
from master..sysprocesses
print 'ESP ' + convert(varchar(12), datediff(ms,@time2,getdate()))
print ''
print 'SYSPROC FIRST PASS'
select spid, ecid, waittype from @probclients where waittype != 0x0000
if exists(select blocked from @probclients where blocked != 0)
begin
print 'Blocking via locks at ' + convert(varchar(26), @time, 121)
print ''
print 'SPIDs at the head of blocking chains'
select spid from @probclients
where blocked = 0 and spid in (select blocked from @probclients where spid != 0)
if @latch = 0
begin
print 'SYSLOCKINFO'
select @time2 = getdate()
select spid = convert (smallint, req_spid),
ecid = convert (smallint, req_ecid),
rsc_dbid As dbid,
rsc_objid As ObjId,
rsc_indid As IndId,
Type = case rsc_type when 1 then 'NUL'
when 2 then 'DB'
when 3 then 'FIL'
when 4 then 'IDX'
when 5 then 'TAB'
when 6 then 'PAG'
when 7 then 'KEY'
when 8 then 'EXT'
when 9 then 'RID'
when 10 then 'APP' end,
Resource = substring (rsc_text, 1, 16),
Mode = case req_mode + 1 when 1 then NULL
when 2 then 'Sch-S'
when 3 then 'Sch-M'
when 4 then 'S'
when 5 then 'U'
when 6 then 'X'
when 7 then 'IS'
when 8 then 'IU'
when 9 then 'IX'
when 10 then 'SIU'
when 11 then 'SIX'
when 12 then 'UIX'
when 13 then 'BU'
when 14 then 'RangeS-S'
when 15 then 'RangeS-U'
when 16 then 'RangeIn-Null'
when 17 then 'RangeIn-S'
when 18 then 'RangeIn-U'
when 19 then 'RangeIn-X'
when 20 then 'RangeX-S'
when 21 then 'RangeX-U'
when 22 then 'RangeX-X'end,
Status = case req_status when 1 then 'GRANT'
when 2 then 'CNVT'
when 3 then 'WAIT' end,
req_transactionID As TransID, req_transactionUOW As TransUOW
from master.dbo.syslockinfo
print 'ESL ' + convert(varchar(12), datediff(ms,@time2,getdate()))
end -- latch not set
end
else
print 'No blocking via locks at ' + convert(varchar(26), @time, 121)
print ''
end -- Fast not set
print 'DBCC SQLPERF(WAITSTATS)'
dbcc sqlperf(waitstats)
Print ''
Print '*********************************************************************'
Print 'Print out DBCC Input buffer for all blocked or blocking spids.'
Print '*********************************************************************'
declare ibuffer cursor fast_forward for
select distinct cast (spid as varchar(6)) as spid
from @probclients
where (spid <> @@spid) and
((blocked!=0 or (waittype != 0x0000 and ignore_app = 0))
or spid in (select blocked from @probclients where blocked != 0))
open ibuffer
fetch next from ibuffer into @spid
while (@@fetch_status != -1)
begin
print ''
print 'DBCC INPUTBUFFER FOR SPID ' + @spid
exec ('dbcc inputbuffer (' + @spid + ')')
fetch next from ibuffer into @spid
end
deallocate ibuffer
Print ''
Print '*******************************************************************************'
Print 'Print out DBCC OPENTRAN for active databases for all blocked or blocking spids.'
Print '*******************************************************************************'
declare ibuffer cursor fast_forward for
select distinct cast (dbid as varchar(6)) from @probclients
where dbid != 0
open ibuffer
fetch next from ibuffer into @spid
while (@@fetch_status != -1)
begin
print ''
set @dbname = db_name(@spid)
set @status = DATABASEPROPERTYEX(@dbname,'Status')
set @useraccess = DATABASEPROPERTYEX(@dbname,'UserAccess')
print 'DBCC OPENTRAN FOR DBID ' + @spid + ' ['+ @dbname + ']'
if @Status = N'ONLINE' and @UserAccess != N'SINGLE_USER'
dbcc opentran(@dbname)
else
print 'Skipped: Status=' + convert(nvarchar(128),@status)
+ ' UserAccess=' + convert(nvarchar(128),@useraccess)
print ''
if @spid = '2' select @blocked = 'Y'
fetch next from ibuffer into @spid
end
deallocate ibuffer
if @blocked != 'Y'
begin
print ''
print 'DBCC OPENTRAN FOR DBID 2 [tempdb]'
dbcc opentran ('tempdb')
end
print 'End time: ' + convert(varchar(26), getdate(), 121)
end -- All
else
print '8 No Waittypes: ' + convert(varchar(26), @time, 121) + ' '
+ convert(varchar(12), datediff(ms,@time,getdate())) + ' ' + ISNULL (@@servername,'(null)')
GO
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