The following is an extract from sp_who2
SPID Status Login HostName BlkBy DBName Command CPUTime DiskIO
----- ---------- ------- -------- ----- ------- ------- ------- ------
162 sleeping om18682 . -1 STIPROD SELECT 236 120
Has anybody experienced a process being blocked by SPID -1.
What is SPID -1? I see nothing listing it in any activity monitor, but it has just recently started blocking some processes.
Thanks,
jim craddock
Hi
On one of my SQL servers (SQL 2000 SP4) i have a problem with spid blocked by itself (spid 54 (Blocked by 54)).
On the server it's running a verry simple UPDATE statement (from the Query Analizer)'. The query needs very long time to finalize (on SP3 it was very fast). I searched some forums regarding this issue and i found that maybe the SP4 can cause this problem.
Do you have any idea or advice?
Thanks
We had this issue yesterday, for like an hour. Suddenly, our website started to get slow and get timeout errors. After executing sp_who2 and sp_whoisactive, we found a system process blocking many other processes. Of course, it was impossible for us to kill it.
Under "Status" it said TASK MANAGER, "Login" sa, from sp_who2.
Under "sql_text" it was NULL, "program_name" empty, "open_tran_count" changed like this: 2,3,4,3,4,2,1 until it finished, and "database_name" changed from our database to master at the end, from sp_whoisactive.
Our CPU usage and memory at that moment were almost the same as any other day.
We don't do backups or execute jobs at that particular time. We don't even use "sa" account.
What could have happened? In the event viewer we've found nothing, nor in SQL server logs.
Once it finished everything was back to normal, we want to prevent this from happening again.
We are using SQL server 6.5 and currently have about 100 users connections at a given
point in time. The application is Visual Basic 5.0 based and it allows users to create
MS Word documents from the application. These documents names are stored in a table which basically
acts as a reference table. Every time a document needs to be attached to a record
this table is called with an insert/update query. This results in an exclusive page/table
lock and ends up into a blocked process. This finally results into a major halt for
all the system users.
Manual killing of these blocked processes frees up the resources and brings things back to normal
although disruptive to the users.
Any clue as to why the blocked processes are not able to free themsevles up ?
Are we missing something in our SQL configuration that will help us with unblocking
these processes ?
If I kill a blocked process, why does the current activity window still show the process? Both processes, blocking and blocked, are scheduled tasks. Also, the blocked process is still listed as a running task in the manage scheduled task window.
View 1 Replies View RelatedHi,
I have a fairly complex application running which has numerous connections on various threads accessing my sql 2005 database.
Every now and then I find that one of my connections is being blocked by process with a pid of -2.
I assume this is some system process.
The only way I can get my application going again is to restart the sql server.
Can someone tell me what process -2 is?
cheers,
Robert
we have tables that load overnight. Sometimes a user will try to run a query up against that table while the table is loading and a deadlock occurs. I do not notice this until I get into the office. By this time many tables have not loaded. Is there a way to have SQL6.5 automatically Kill deadlock processes.
View 1 Replies View Related
I have a question about blocked processes. My manager wants to know how you can know the following when a blocked process is encountered.
The job, program and the statement that is causing the blocking. I have figured out how to determine the database involved but not a lot else. Such as in the blocked process report there is a waitresource field. How to you decipher it?
The report also tells you the client application, but in this case it just states the Micro focus Net Express as the client, not the job or program that is running.
I have an inputbuf listed but it just shows the database id, and the object id. And I am not sure how to locate the object id in this case, I am guessing sys.objects, but I do not seem to find that one.
I have read many things on MSN about the blocked process report, but it does not seem to go into great detail.
I seem to have all the pieces, but do not exactly know how to quickly tie them all together.
Any help would be appreciated.
Thanks,
Kathy
According to BOL you can configure an Alert to notify you when the blocked process threshold has been exceeded:
SQL Server 2005 Books Online
blocked process threshold Option
Use the blocked process threshold option to specify the threshold, in seconds, at which blocked process reports are generated. The threshold can be set from 0 to 86,400. By default, no blocked process reports are produced. This event is not generated for system tasks or for tasks that are waiting on resources that do not generate detectable deadlocks. For more information about deadlock detection, see Detecting and Ending Deadlocks.
You can define an alert to be executed when this event is generated. So for example, you can choose to page the administrator to take appropriate action to handle the blocking situation.
Can someone provide some direction on exactly how this is done? Does it require a Service Broker and queue?
Hi,
I was trying to extract data from the source server using OLEDB Source and SQL Server Destination when i encountered this error:
"Transaction (Process ID 135) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.".
What must be done so that even if the table being queried is locked, i wouldn't experience any deadlock?
cherriesh
Hello all,
I am running into an interesting scenario on my desktop. I'm running developer edition on Windows XP Professional (9.00.3042.00 SP2 Developer Edition). OS is autopatched via corporate policy and I saw some patches go in last week. This machine is also a hand-me-down so I don't have a clean install of the databases on the machine but I am local admin.
So, starting last week after a forced remote reboot (also a policy) I noticed a few of the databases didn't start back up. I chalked it up to the hard shutdown and went along my merry way. Friday however I know I shut my machine down nicely and this morning when I booted up, I was in the same state I was last Wenesday. 7 of the 18 databases on my machine came up with
FCB:pen: Operating system error 32(The process cannot access the file because it is being used by another process.) occurred while creating or opening file 'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataTest.mdf'. Diagnose and correct the operating system error, and retry the operation.
and it also logs
FCB:pen failed: Could not open file C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDataTest.mdf for file number 1. OS error: 32(The process cannot access the file because it is being used by another process.).
I've caught references to the auto close feature being a possible culprit, no dice as the databases in question are set to False. Recovery mode varies on the databases from Simple to Full. If I cycle the SQL Server service, whatever transient issue it was having with those files is gone.
As much as I'd love to disable the virus scanner, network security would not be amused. The data and log files appear to have the same permissions as unaffected database files. Nothing's set to read only or archive as I've caught on other forums as possible gremlins. I have sufficient disk space and the databases are set for unrestricted growth.
Any thoughts on what I could look at? If it was everything coming up in RECOVERY_PENDING it's make more sense to me than a hit or miss type of thing I'm experiencing now.
Dear list
Im designing a package that uses Microsofts preplog.exe to prepare web log files to be imported into SQL Server
What Im trying to do is convert this cmd that works into an execute process task
D:SSIS ProcessPrepweblogProcessLoad>preplog ex.log > out.log
the above dos cmd works 100%
However when I use the Execute Process Task I get this error
[Execute Process Task] Error: In Executing "D:SSIS ProcessPrepweblogProcessLoadpreplog.exe" "" at "D:SSIS ProcessPrepweblogProcessLoad", The process exit code was "-1" while the expected was "0".
There are two package varaibles
User::gsPreplogInput = ex.log
User::gsPreplogOutput = out.log
Here are the task properties
RequireFullFileName = True
Executable = D:SSIS ProcessPrepweblogProcessLoadpreplog.exe
Arguments =
WorkingDirectory = D:SSIS ProcessPrepweblogProcessLoad
StandardInputVariable = User::gsPreplogInput
StandardOutputVariable = User::gsPreplogOutput
StandardErrorVariable =
FailTaskIfReturnCodeIsNotSuccessValue = True
SuccessValue = 0
TimeOut = 0
thanks in advance
Dave
How do I use the execute process task? I am trying to unzip the file using the freeware PZUnzip.exe and I tried to place the entire command in a batch file and specified the working directory as the location of the batch file, but the task fails with the error:
SSIS package "IngramWeeklyPOS.dtsx" starting.
Error: 0xC0029151 at Unzip download file, Execute Process Task: In Executing "C:ETLPOSDataIngramWeeklyUnzip.bat" "" at "C:ETLPOSDataIngramWeekly", The process exit code was "1" while the expected was "0".
Task failed: Unzip download file
SSIS package "IngramWeeklyPOS.dtsx" finished: Success.
Then I tried to specify the exe directly in the Executable property and the agruments as the location of the zip file and the directory to unzip the files in, but this time it fails with the following message:
SSIS package "IngramWeeklyPOS.dtsx" starting.
Error: 0xC002F304 at Unzip download file, Execute Process Task: An error occurred with the following error message: "%1 is not a valid Win32 application".
Task failed: Unzip download file
SSIS package "IngramWeeklyPOS.dtsx" finished: Success.
The command in the batch file when run from the command line works perfectly and unzips the file, so there is absolutely no problem with the command, I believe it is just the set up of the variables on the execute process task editor under Process. Any input on resolving this will be much appreciated.
Thanks,
Monisha
I am designing a utility which will keep two similar databases in sync. In other words, copying the new data from db1 to db2 and updating the old data from db1 to db2.
For this I am making use of the 'Tablediff' utility which when provided with server name, database, table info will generate .sql file which can be used to keep the target table in sync with the source table.
I am using the Execute Process Task and the process parameters I am providing are:
WorkingDirectory : C:Program Files (x86)Microsoft SQL Server90COM
Executable : C:SQL_bat_FilesSQL5TC_CTIcustomer.bat
The customer.bat file will have the following code:
tablediff -sourceserver "LV-SQL5" -sourcedatabase "TC_CTI" -sourcetable "CUSTOMER_1" -destinationserver "LV-SQL2" -destinationdatabase "TC_CTI" -destinationtable "CUSTOMER" -f "c:SQL_bat_Filessql5TC_CTIsql_filescustomer1"
the .sql file will be generated at: C:SQL_bat_Filessql5TC_CTIsql_filescustomer1.
The Problem:
The Execute Process Task is working fine, ie., the tables are being compared correctly and the .SQL file is being generated as desired. But the task as such is reporting faliure with the following error :
[Execute Process Task] Error: In Executing "C:SQL_bat_FilesSQL5TC_CTIpackage_occurrence.bat" "" at "C:Program Files (x86)Microsoft SQL Server90COM", The process exit code was "2" while the expected was "0". ]
Some of you may suggest to just set the ForceExecutionResult = Success (infact this is what I am doing now just to get the program working), but, this is not what I desire.
Can anyone help ?
I'm pulling data from Oracle db and load into MS-SQL 2008.For my data type checks during the data load process, what are options to ensure that the data being processed wouldn't fail. such that I can verify first in-hand with the target type of data and then if its valid format load it into destination table else mark it with error flag and push into errors table... All this at the row level.One way I can think of is to load into a staging table then get the source & destination table -column data types, compare them and proceed.
should I just try loading the data directly and if it fails try trouble shooting(which could be a difficult task as I wouldn't know what caused error...)
Hi Folks,
I am having this table locking issue that I need to start paying attention to as its getting more frequent.
The problem is that the data in the tables is live finance data that needs to be changed and viewed almost real time so what I have picked up so far is that using 'table Hints' may not be a good idea.
I have a guy at work telling me that introducing a data access layer is the only way to solve this, I am not convinced but havnt enough knowledge to back my own feeling up. (asp system not .net).
Thanks in advance
We are facing deadlock issue in our web application. The below message is coming:
> Session ID: pwdagc55bdps0q45q0j4ux55
> Location: xxx.xxx.xxx.xxx
> Error in: http://xxx.xxx.xxx.xxx:xxxx/Manhatta...Bar=&Mode=Edit
> Notes:
> Parameters:
> __EVENTTARGET:
> __EVENTARGUMENT:
[code].....
Could someome please tell me what is going on with the following stored procedure:
EXECUTE msdb.dbo.sp_sqlagent_get_perf_counters
HI!
if i have SPID. then can i get the storedprocedure name ?
Regards,
Shabber Abbas Rizvi.
All,
Is there any way to see the SQL for any given spid in SQL server?
I can see "properties" under enterprise mgr - which shows you a snippet of the SQL - or "sp_execute" depending on what you use to get to the DBMS.
Is there a way to take a deeper look?
Thanks,
Isaac
Hi,
Can I have more than one value for variable @@SPID during a connection?
PS: sorry my english.
Thanks.
Hi All,
Sql Server 7.
I have a table cust_detail when ever there is an insert/update/delete in this table it is getting blocked and in turn its blocking other table inv_credit which is doing select statement.
Please suggest me what might be the reason.
Waiting for Reply
TIA
Adil
Hi to all.
I have a small doubt.
In my server some processs are running slow.
With out the use of profiler hw we can find the spid's that are running slow. is there any procedure for that.
I am seeing intermittent blocking problems. The strange part of it is,that the SPID listed in the Blk By column is the same as the SPID thatis being blocked.Has anyone seen this before, or have any idea what this may suggest?
View 1 Replies View RelatedHi,
Here i have a question..
Whenever i see my spid in LOCK/PROCESS ID
one command DBCC BUFFERINPUT(MY SPID) always running
and it is showing ''''tempdb.dbo.##lockinfo'''
MODE---- X
Is it pretty normal or something wrong..
i am not running any thing, just simply opened EM..
Pls any suggestions...
thank u
kavira
I know that spid 22 is blocking 2 other users. How do I tell who that user is? Is this just matching the same spid# in the process info in EM and if it doesn't give me an NT name it's probably because they're coming through the application and I can't figure it out?
Thanks
I'm going to try to explain my situation.
I have a spid that I'm not able to kill, this were a select statement from with in access 97 application using a DNS connection.
So even that I reboot the client pc and kill the spid it still shows as active with status RollBack.
We have similar problem before and the only way that it disappear were re - starting Sql.
(system Sql 7.0 with sp1 and Access 97)
Thanks.
How do COM+ transactions relate to SQL Server SPID?
I am trying to solve a deadlock issue. Using SQL trace, I find SPID 65 and 71 are trying to acquire resources that are locked by each other. But what I am confuse with is tasks performed by 65 are triggered by different transactions (same for 71). Should different COM+ transaction uses different SPID?
The entire COM+ application uses only one db login.
Please advice.
I can not stop a process using 'KILL spid'.What else should I try?
process has begun a transaction and does not commit.
I have a problem. I am trying to kill a spid that is blocking updates to a table.
The spid number is '-2'. I am using KILL with UOW and I am getting this error:
Server: Msg 6112, Level 16, State 1, Line 1
Distributed transaction with UOW {FCF8D536-27ED-11D6-9CF2-0002A56BDA54} is in prepared state.
Only Microsoft Distributed Transaction Coordinator can resolve this transaction. KILL command failed.
Users are connecting through MTS server. I am runnnig SQL2000 sp2 +hotfix, on NT4.0.
Has anyone encountered this problem before, and has a solution for it (besides rebooting the MTS and SQL Server)?
Thanks,
Peter
can we just kill spid and drop it without doing any rollback ...?
Thanks,
ServerTeam
We are using SQL Server 2000 SP4.
Every week to few weeks we'll have a situation where the cpu will max out on our main db server.
This server is a hoss, dual quad core with 16 gigs of ram. All the system type stuff looks good.
I look into the spids though and I notice a few of them that are very high in cpu.
I believe that I've noticed over time that a certain SPID never releases and starts fresh. Could it be possible that a program is written in a way that it just keeps using it over and over with each new user and it nevers releases that CPU?
I know this is a probably a pretty dumb question and there's alot of details I have to leave out for being brief. Ultimately I have to find out why the CPU is hitting 100 percent and hanging there.
I know it's this program because when I stop the app pool for only that program then the CPU on the SQL box goes back down.
Any help would be appreciated...and feel free to ask more questions for more detail and I'll try to give it.