Could #TempTable Within SP Cause Lock On Tempdb?
Jan 16, 2008
Hi,
A stored procedure mySlowProc performs a complicate SELECT. It creates 10 temporary tables either by SELECT ... INTO #Table1 or by doing CREATE TABLE #Table2 and then INSERT #Table2. Beside the fact this SP is known to be slow and could be better written. However, for educational purpose, can you please shed some lights:
Question 1: Could the use of many #TempTable(s) lead directly or indirectly to a blocking situation where another user cannot perform a write (UPD, DEL, INS) on the table (or tables) which are SELECTed by the mySlowProc SP?
Question 2: What are the consequences of abusing #TempTable if mySlowProc is called concurrently by 100 different users? In particular, is there any locking mechanism that would prevent the mySlowProc SP from being executed concurrently.
Thanks very much in advance for any help.
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Dec 11, 2007
Hi!
I have several problems of my coding, please give me some advice.
1. How to let result data place at temptable temperary for other mapping? should i create temptable first ?
2. When I got the duplicated record result, I require to map with the main tables (tblROrder & tblSOrder)to find out the record reference no. Please advice how to handle this issue with reference no. at the outcome.
Many thanks,
New Learner
***Coding as following
SELECT code, SMSNo, holderNo, count(*) From tblROrder
WHERE Day = @Day
GROUP BY code, SMSNo, SholderNo
HAVING COUNT(*) > 1<=====result will be found, but since i didn't get the RefNo at the listing, please advise how to let the outcome with RefNo
INTO #tmpOne (code, SMSNo, holderNo) <====error found
SELECT code, SMSNo, holderNo, GrossAmt, count(*) From tblSOrder
WHERE Day = @prmDay between D1 AND D14
GROUP BY code, SMSNo, holderNo, GrossAmt
HAVING COUNT(*) > 1<=====result will be found, but since i didn't get the RefNo at the listing, please advise how to let the outcome with RefNo
INTO #tmpTwo (code, SMSNo, holderNo) <====error found
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Feb 2, 2007
I simply made my script task (or any other task) fail
In my package error handler i have a Exec SQL task - for Stored Proc
SP statement is set in following expression (works fine in design time):
"EXEC [dbo].[us_sp_Insert_STG_FEED_EVENT_LOG] @FEED_ID= " + (DT_WSTR,10) @[User::FEED_ID] + ", @FEED_EVENT_LOG_TYPE_ID = 3, @STARTED_ON = '"+(DT_WSTR,30)@[System::StartTime] +"', @ENDED_ON = NULL, @message = 'Package failed. ErrorCode: "+(DT_WSTR,10)@[System::ErrorCode]+" ErrorMsg: "+@[System::ErrorDescription]+"', @FILES_PROCESSED = '" + @[User::t_ProcessedFiles] + "', @PKG_EXECUTION_ID = '" + @[System::ExecutionInstanceGUID] + "'"
From progress:
Error: The Script returned a failure result.
Task SCR REIL Data failed
OnError - Task SQL Insert Error Msg
Error: A deadlock was detected while trying to lock variable "System::ErrorCode, System::ErrorDescription, System::ExecutionInstanceGUID, System::StartTime, User::FEED_ID, User::t_ProcessedFiles" for read access. A lock could not be acquired after 16 attempts and timed out.
Error: The expression ""EXEC [dbo].[us_sp_Insert_STG_FEED_EVENT_LOG] @FEED_ID= " + (DT_WSTR,10) @[User::FEED_ID] + ", @FEED_EVENT_LOG_TYPE_ID = 3, @STARTED_ON = '"+(DT_WSTR,30)@[System::StartTime] +"', @ENDED_ON = NULL, @message = 'Package failed. ErrorCode: "+(DT_WSTR,10)@[System::ErrorCode]+" ErrorMsg: "+@[System::ErrorDescription]+"', @FILES_PROCESSED = '" + @[User::t_ProcessedFiles] + "', @PKG_EXECUTION_ID = '" + @[System::ExecutionInstanceGUID] + "'"" on property "SqlStatementSource" cannot be evaluated. Modify the expression to be valid.
Warning: The Execution method succeeded, but the number of errors raised (4) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
And how did I get 4 errors? - I only set my script task result to failure
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May 15, 2008
How insert values from TABLE2 into @TempTable if a row into TABLE1 not in TABLE2?
--Query:
DECLARE @TempTable (IdTemp int, TempDate datetime)
INSERT INTO @TempTable (IdTemp, TempDate)
SELECT T1.Id, MAX(T2.Date2)
FROM Table1 T1 INNER JOIN Table2 T2 ON T1.Id = T2.Id
GROUP BY T1.Id
/*
Example:
TABLE1 Id = '1'
TABLE2 = Id '1' not exists
*/
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Mar 27, 2008
Go
Create table #RealTable
(
LastName varchar (20)
,Phone varchar (20)
,MissingInfo varchar (100)
,ErrMessage varchar (255)
);
Insert INTO #RealTable Values('Abraham','917 250 9999', '1', 'Need More Paper')
Insert INTO #RealTable Values('Sar', '917 999 9999' '2', 'Need ID')
Insert INTO #RealTable Values('John', '732 888 8888', '3', 'Need More Paper')
Insert INTO #RealTable Values ('Sal', '555 555 5555', '4', 'Legal Documentation')
some how it is not working??? i dont know why
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Dec 10, 1998
I have a stored procedure in which I create a temporary table : ##xyz
The stored procedure runs fine, however if I try to run it again later on
I get the following message:
"Msg 2714, Level 16, State 1
There is already an object named '##xyz' in the database."
If I issue the drop table ##xyz I get the following message:
"Msg 3701, Level 11, State 1
Cannot drop the table '##xyz', because it doesn't exist in the system catalogs
Help!
Thanks in advance...Marisa
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May 17, 2007
Is there a way in T-SQL to check to see if a #tempTable exists? I want to write a proc the uses a temp table, but I first need to see if the table already exists. if it does I want to drop it, otherwise skip
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Apr 7, 2004
Hi
We are facing an acute situation in our web-application. Technology is ASP.NEt/VB.NET, SQL Server 2000.
Consider a scenario in which User 1 is clicking on a button which calls a SQL stored procedure. This procedure selects Group A of records of Database Page1.
At the same time if User 2 also clicks the same button which calls same SQL stored procedure. This procedure selects Group B of records of Database Page1.
So, its the same Page1 but different sets of records. At this moment, both the calls have shared locked on the Page1 inside the procedure.
Now, in call 1, inside the procedure after selecting Group A of records, the next statement is and update to those records. As soon as update statement executes, SQL Server throws a deadlock exception as follows :
Transaction (Process ID 78) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction
We are able to understand why its happening. Its because, Group A and Group B of records are on the same Page1. But both the users have shared lock on the Page1. So, no one gets the exclusive lock in records for update, even though, the records are different.
How can I resolve this issue? How can I get lock on wanted rows instead of entire page?
Please advice. Thanks a bunch.
Pankaj
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Jan 26, 2000
I have a stored procedure which creates 3 temporary tables. Every table is about ten rows and 25 columns. The inserts in the tables goes fast (< 30 ms). The selects from them is also that fast. BUT the first select takes about 3200 ms one each of the temptables. (I first do insert, then select from them.) So the SP executes at about 13 seconds instead of 3.
Any suggestions, anyone, please?
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Mar 9, 2001
Hi,
Obviously, in a select statement, I can select * into #temptable. But can I do the equivalent from a stored procedure? I do not want to edit the stored procedure, just take the records it returns and put them into the temporary table. I do not know what records are returned by the stroped procedure until it is executed. Is there a way I can do this?
Thanks
J
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Apr 22, 2008
Hi,
If any one could suggest if Is it possible to make a JOIN of two different select statements.
SELECT PartNumber,SUM(Value) FROM dbo.List_Parts where PartNumber like '%TX'
To be Joined with
SELECT PartNumber,COUNT(PartNumber) FROM dbo.List_Orders where Part Number like '%TX'
The result should be:
PartNumber , SUM(Value),COUNT(PartNumber)
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Aug 9, 2005
I am trying to add a column to a temp table and then immeditaely queryagainst that new column. If I do this in Query Analyzer it works fineas long as there is a go in between, but I can't use a go inside astored proc.. How do i get SQL to finish processing the alter tablecommand so I can use the new column?alter table #TempPaging add TIId int not null identity--go --fixes the problem in QA, but not in procSelect * From #TempPaging Where TIId > 0 AND TIId < 11(Error TIId does not exist)
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Mar 11, 2008
Code:
exec('select RIGHT(00000 + CAST(dh.zipcode AS varchar(5)), 5) as zip, '+@fieldname +' as distance into #distance from sumplicity.dbo.t_distancetohospital dh')
This runs normally and returns the number of rows created. Yet when I do a 'select * from #distance' query, I get a message that #distance doesn't exist.
Where is it storing all of this and how do I access it?
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Jun 6, 2002
Hi group,
I don't know what I should try next, all of my tries have been without results in this case. I just wanted to create a temporary table, then insert one row into it and then use this row to compare if this row exists in another table or not. This is my script:
------------------------
CREATE PROCEDURE imp_Tippimport (@TGName char(33)) AS
BEGIN
CREATE TABLE #tTippgeber (
TGName2 char(33)
)
INSERT INTO #tTippgeber (TGName2)
VALUES (@TGName)
*** see below ***
IF NOT exists (select TGName FROM Tippgeber WHERE TGName = @TGName)
INSERT INTO Tippgeber SELECT TGName2 FROM #tTippgeber
/* SELECT * INTO Tippgeber FROM #tTippgeber */
ELSE
UPDATE Tippgeber SET
TGName = t.TGName2
FROM #tTippgeber AS t, Tippgeber
WHERE TGName = t.TGName2
END
GO
I also created a cursor and used a fetch in to a veriable in the line with the stars to see the value of TGName2 but it was NULL.
Any ideas ?!
Thanks for any help !!
Sascha
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May 22, 2006
Hi,
I have set of 2 DTS packages, one of which calls the other by forming a command-line (dtexec) using a Execute Process task.
From the parent package-> Execute Process Task->
dtsexec /F etc... /<pkg variable> = "servername"
Each of the parent and the called package have a variable: "User::DWServerSQLInstance" which is mapped to the SQL server connection manager server name property using an expression. The outer package has the above variable and so does the inner called package (which gets assigned through the command line from the outerpackage call to inner)
I "sometimes" get the following error:
OnError,I4,TESTDOMAdministrator,ACDWAggregation,{A1F8E43F-15F1-4685-8C18-6866AB31E62B},{77B2F3C7-6756-46EB-8C01-D880598FB4B3},5/22/2006 5:10:28 PM,5/22/2006 5:10:28 PM,-1073659822,0x,The variable "User::DWServerSQLInstance" is already on the read list. A variable may only be added once to either the read lock list or the write lock list.
Help would be appreciated!
I have seen other posts on this but, not able to relate the solution to my scenario.
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May 10, 2006
Hi All,
I have seen a few other people have this error.
Package works fine when run from BIDS, DTExec, dtexecui. When I schedule it, It get these random errors. (See below)
The main culprit is a variable called "RecordsetFileDIR" which is set using an expression. (@[User::_ROOT] + "RecordSets\")
A number of other variables use this as part of their expression and as they all fail, pretty much everything dies.
I have installed SP1 (Not Beta) on server. Package uses config files to set the value of _ROOT.
The error does not always seem to be with this particular variable though. Always a variable that uses an expression but errors are random. Also, It will run 3 out of 10 times without a problem. I am the only person on the server at the time.
Any ideas?
Cheers,
Crispin
Error log:
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073659822,0x,The variable "User::RecordsetFileDIR" is already on the read list. A variable may only be added once to either the read lock list or the write lock list.
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073639420,0x,The expression for variable "rsHeaderFile" failed evaluation. There was an error in the expression.
OnError,,,DF_Header_Header,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636247,0x,Accessing variable "User::rsHeaderFile" failed with error code 0xC00470EA.
OnError,,,Move All Data,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636247,0x,Accessing variable "User::rsHeaderFile" failed with error code 0xC00470EA.
OnError,,,Load Open Batches and Process Files,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636247,0x,Accessing variable "User::rsHeaderFile" failed with error code 0xC00470EA.
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636247,0x,Accessing variable "User::rsHeaderFile" failed with error code 0xC00470EA.
OnError,,,DF_Header_Header,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636390,0x,The file name is not properly specified. Supply the path and name to the raw file either directly in the FileName property or by specifying a variable in the FileNameVariable property.
OnError,,,Move All Data,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636390,0x,The file name is not properly specified. Supply the path and name to the raw file either directly in the FileName property or by specifying a variable in the FileNameVariable property.
OnError,,,Load Open Batches and Process Files,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636390,0x,The file name is not properly specified. Supply the path and name to the raw file either directly in the FileName property or by specifying a variable in the FileNameVariable property.
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1071636390,0x,The file name is not properly specified. Supply the path and name to the raw file either directly in the FileName property or by specifying a variable in the FileNameVariable property.
OnError,,,DF_Header_Header,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073450901,0x,"component "rsHeader" (365)" failed validation and returned validation status "VS_ISBROKEN".
OnError,,,Move All Data,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073450901,0x,"component "rsHeader" (365)" failed validation and returned validation status "VS_ISBROKEN".
OnError,,,Load Open Batches and Process Files,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073450901,0x,"component "rsHeader" (365)" failed validation and returned validation status "VS_ISBROKEN".
OnError,,,POSBasketImport,,,10/05/2006 12:03:34,10/05/2006 12:03:34,-1073450901,0x,"component "rsHeader" (365)" failed validation and returned validation status "VS_ISBROKEN".
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Jul 14, 2004
Has anyone seen the SQL Server error:
"tempdb is skipped. You cannot run a query that requires tempdb"?
We're running a .Net web application with a SQL Server 2000 backend, and we get the error intermittently. Restarting the SQL Server service seems to fix it, as it causes tempdb to be rebuilt, but this isn't a long term solution. Any direction or hints would be greatly appreciated. Thanks!
- Mike
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May 23, 2001
Hi,
I want to lock a table so others cannot lock it but able to read it inside transactions.
The coding I need is something like this: set implicit_transactions on begin transaction select * from table1 with (tablock, holdlock) update table2 set field1 = 'test' commit transaction commit transaction
I have tried the coding above, it won't prevent others from locking table1.
So, I changed the tablock to tablockx to prevent others from locking table1. But this will also prevent others from reading table1. So, how can I lock table1 so others cannot lock it but still able to read it?
Thank you for any help
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Aug 24, 2007
Hi guys 'n gals,
I created a query, which makes use of a temp table, and I need the results to be displayed in a View. Unfortunately, Views do not support temp tables, as far as I know, so I put my code in a stored procedure, with the hope I could call it from a View....
I tried:
CREATE VIEW [qryMyView]
AS
EXEC pr_MyProc
and unfortunately, it does not let this run.
Anybody able to help me out please?
Cheers!
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Sep 18, 2006
Hello everyone,I have a web project where users access a aspx page to view information stored in an SQL database.My client want that one user can access a row of information and see it, all other users shouldn't be able to view or update the same row?it means whenever a row of data is displayed by some user, this row should be locked even for beeing viewed by all other users, when this user close this page, this row will be available. ?I should do this in code behind or something in sql...How can I do that???
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Oct 6, 2003
I remember there's a command you can type into SP . so no one else can see your SP even the SA. can anyone tell me what's the command is thanks!!
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Mar 27, 2001
Hello,
An application we are designing is behaving rather strangely. Basically, we
have a trigger on SQL 2000 on W2K Server watching for a record update. When
that happens a stored procedure gets executed which in turn spawns a VB that extracts that record, applies some rules to it, and writes a text file to disk. 9 out of 10 times, this program will cause a CPU spin, and it can't be killed from the Task Manager.
I did not write the VB app, I am writing the front end for the application in ColdFusion, but I need some ideas on what might be causing such behavior and how can the problem can be diagnosed. Thanks for any help!
Stas Newdel
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Sep 3, 2007
Is it good practice to use WITH (NO LOCK) on SELECT statements, ie
SELECT * FROM MyTable WITH(NO LOCK)
Or does the SQL Server optimiser automatically use WITH (NO LOCK) ?
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May 30, 2006
Hi,
i have a big problem , i work with sql 2000 on windows 2000.
When user do a select against my database sqlserver lock all the table and nonoe can work.
Haw can i change the isolation level for a ropw and for all the db.
Thanks.
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Mar 29, 2007
Hello,
Wondering if anyone might have a guess about this.
I have a small 4 table DB. it's got several stored proc's and it's accessed through .NET to fill it in and get data from it.
It's been working just fine. But this morning, while it was doing its thing, I experimented with it by adding then deleting a View (through the View Wizard.)
Then later I started noticing that my .Net calls had slowed to a crawl (I hadn't made any code changes)and even making direct queries through Query Analyzer had slowed too.
My question is: being that there were no network issues, could the View create/delete have caused the DB to come to a halt or perhaps a table lock-up?
While I'm at it, is there anything that I can put in stored proc's or other places to prevent locking issues (if that's what happened here.)
I already use Begin/Commit Tran pairs.
And sorry if this post doesn't read like a SQL beginner, but believe me, I am.
Thanks for your advice!!
--PhB
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Aug 20, 2007
Lets say i have a view.
vuTestingNoLocks
this view looks like this...
Create View vuTestingNoLocks as
SElect *
From dbo.Employees
inner Join dbo.EmployeeTerritories on EmployeeTerritories.EmployeeID = Employees.EmployeeID
If I select from this view using Select * From vuTestingNoLocks (NOLOCK)
Does the (nolock) command propegate down through the tables? Meaning will it scan tables that are locked still ignoring their locks?
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Oct 13, 2006
I'm working with SQL Server Express, and I want to configure a named instance so that only the 'sa' user and a specified SQL Server user with a specified password have access. In particular, I'm trying to lock out BUILTINAdministrators. Furthermore, I need to be able to do this from a command-line, since I want to configure it in a script. Nothing I do seems to work.
I've attempted to use sqlcmd and the T-SQL call ALTER LOGIN [BUILTINAdministrators] DISABLE, but that returns the error "Cannot alter the login 'BUILTINAdministrators' because it does not exist or you do not have permission."
What I can (apparently) successfully do is run DENY CONTROL TO [BUILTINAdministrators]. This runs without reporting an error. However, after running it against the 'master' database and the specific database in my named instance I care about, I can still run the following:
sqlcmd -S (local)MyInstance -d MyDB -Q "select * from my_table"
and see the contents of my_table.
What do I need to do to restrict access exclusively to 'sa' and other SQL users I designate?
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Jul 19, 2006
Hello.
I need to insert some records to an accounting table and calculate the balance after that. Thus, other users can be trying to do the same. How to lock the db and make the other users wait until the right moment? I'm using SqlDataSource to do that.
Thanks.
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Sep 19, 2007
hi all iam working on a ticketing application i want to avoid two users to book the same ticket the requirement is as follows
1. the system should show all the available tickets which is not yet booked
2.when two users book the ticket at the same time time it should not allow the two persons to update at the same tme
the main aim is to avoid data concurency
how can i get this done
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Jul 23, 2004
Hi,all:
This problem almost drives me crazy, hope I can get some hints from you guyz!!!
Ok, here is the situation:
I wanna only one users 2 modify the data(update) from my page each time, and if at the same time, there are some other users connecting my database through .aspx page, they can only browse the data until the first users finish updating.
It seems I need to implement locking the database, but I am not sure how I am gonna do that using asp.net!!!
Thanx in advance!
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Nov 1, 2005
hi, i have an application that updates some records in sql tables, and i want to do a web application that updates records in the some database-table(sql) so, my question is how can i lock the row or table so i dont have concurrency problems.tnx in advance.
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May 18, 2006
I have a process that is running on a windows service that feeds a web applications database. While the windows service is processing the data the web application can't get to the data, this causes a minute or two delay, no so bad if it didn't happen every two minutes. What I am wondering is if I can set something on the ado.net transaction object that might get me around this problem. I don't know if i want a dirty read, because that would cause the web app to have exceptions. Any tips around this would be great. Thanks in advance
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May 24, 2001
Hi, Everyone
Can anyone tell me how to find who blocks the table or record, because the Lock Blocks is extremly high in the performance monitor.
Regards,
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