Strange Timeout Problem When Executing Stored Proc

Jul 27, 2004

We have a stored procedure that will return at most about 600 records. In almost all cases it works fine, but in a few odd cases the command times out when used from a webform. We changed the CommandTimeout property to 120 seconds... no difference. If we run a query that times out in Query Analyzer, it runs in under 3 seconds (on the SQL Server machine). We also did a lot of profiling, and for any page that runs fine, the query takes about the same time when called from a webform and run in the Query Analyzer.


We ran our tests on the pre-production environment with absolutely no one else on the machines. We also created a test page that just fills a DataSet. Straightforward... get connection object, create command, set params, create data adapter, fill dataset. It suffers the same problem.





The web server and SQL server are two separate machines. Oh, and before I forget... This is SQL 2000. It used to run SQL 7, and all the queries there were (slightly) slower, but none timed out, not even the ones that do now.





Maybe the first question should be:


How can it be that a query that runs fine in Query Analyzer times out from a webform?

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Strange Stored Proc Behavior

Jun 23, 2000

I have a stored proc with the following two lines of code:

Select @SumCredits = (Select Sum(CreditAmount) From AccountBalanceList WITH (NOLOCK) Where (AccountRowId = 2000) And (DocDate >= '1/1/1900' And DocDate <= '12/31/2099'))

Select @SumDebits = (Select Sum(DebitAmount) From AccountBalanceList WITH (NOLOCK) Where (AccountRowId = 2000) And (DocDate >= '1/1/1900' And DocDate <= '12/31/2099'))

If I execute this stored proc via Query Analyzer, it will take about 11 seconds. If I execute the above two SQL statements indiviudally within Query Analyzer, each takes less than a second (the entire stored proc should take about a second). This hasn't always been happening. Just recently this behavior started occuring - after we imported a large amount of data into our database. However, I don't know if the two events are related.

Has anyone ever noticed this type of thing?

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Mar 25, 2005

Hi All,
 I have stored proc that processes about 60,000 rows using a cursor. When I call the SP from Query Analyzer, I get the following error message after processing about 12,000 records :
 
Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionRead (InvalidParam()).
Server: Msg 11, Level 16, State 1, Line 0
General network error. Check your network documentation.
ODBC: Msg 0, Level 16, State 1
Communication link failure
 
Connection Broken
 
 
12614 records
 
What can i do to make this SP run sucessfully ? I even tried using a table variable instead of a cursor, but got the same result.
 
THE output from SP_CONFIG is
Option                                                                                                config_value
----------------------------------------------------------------------------------------------------------------------------------







affinity mask
0

allow updates
0

awe enabled
0

c2 audit mode
0

cost threshold for parallelism
5

Cross DB Ownership Chaining
0

cursor threshold
-1

default full-text language
1033

default language
0

fill factor (%)
0

index create memory (KB)
0

lightweight pooling
0

locks
0

max degree of parallelism
0

max server memory (MB)
2147483647

max text repl size (B)
65536

max worker threads
255

media retention
0

min memory per query (KB)
1024

min server memory (MB)
0

nested triggers
1

network packet size (B)
4096

open objects
0

priority boost
0

query governor cost limit
0

query wait (s)
-1

recovery interval (min)
0

remote access
1

remote login timeout (s)
20

remote proc trans
0

remote query timeout (s)
0

scan for startup procs
0

set working set size
0

show advanced options
1

two digit year cutoff
2049

user connections
0

user options
0
 
 

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Oct 1, 2005

My current task in my company is...

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I had created a DTS package using ActiveX script and written a Stored Proc to get the records from Staging table to Database tables...every thing is working fine... but...


they asked me to send "TapeType' and "DealName" into two fields and "current datetime" into one more field of the stagingtable fields which are not present inthe Spreadsheet....

so in the Activex script i hard coded... destination"TapeType"= "BidTape" and destination"DealName"= "ABCD" and its working...
and for currentdate i had defined a DTS Task and in that i had written a SQL stmts..
update table....
set currentdate = getdate()
where TapeType = 'BidTape' ..... which is also working....but the problem is

if i got one more spread sheet with same "TapeType" i.e. BidTape but with different "DealName" i.e. "XYZ".... every thing is working out but....the Currentdate field is getting updated every where with as one date..???
can u suggest me a better solution here.....

and after this Iam planning to create one more Task to Execute the Proc..... but I have to pass 2parameters i.e. "Dealname" and "TapeType"... they want every thing to be get done with single mouse click...

can u suggest me here how to pass these 2parameters in the DTS package,..

I will be waiting for any one your valuable suggestions....

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Mar 17, 2004

I am trying to execute stored procedures accross a network, which return recordsets. The problem I'm having is as follows:

I need to return the recordset with cursor type adOpenStatic and not adOpenForwardOnly, which is the default when using the execute command. So I decided to use the open cammand instead which seemed to work.

the probelm is that it takes a really long time to process the open command, but the execute is very fast. Does anyone know why this might be?

Here is the code which I am using:


bool SOMEFUNCTION( ..... )
_CommandPtr objCmd = NULL;
objCmd.CreateInstance(__uuidof(Command));
bool retval = true;

try
{
objCmd->ActiveConnection = connection;
objCmd->CommandText = "sp_as_played_list";
objCmd->CommandType = adCmdStoredProc;
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// WORKS VERY SLOWLY - get to have Static cursor
recordset->Open( (IDispatch *)objCmd, vtMissing, adOpenStatic, adLockReadOnly, adCmdStoredProc );

// Or - WORKS VERY QUICKLY - adOpenForwardOnly default cursor
recordset = objCmd->Execute( NULL, NULL, adCmdStoredProc);

if(recordset->State == adStateClosed)
{
retval = false;
}


thanks

aidan

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I have CLR integration enabled on the sql server.

The dbo has UNSAFE ASSEMBLY rights

I have the both the assembly and the serialized dll imported in the database.


Here's the definition of the stored proc -


CREATE PROCEDURE [dbo].[WriteXMLNotification]

@TaskID [nvarchar](20)

WITH EXECUTE AS CALLER

AS

EXTERNAL NAME [DataInterfaceWebServices].[TaskUpdateXMLWriter.WriteXMLNotification].[run]



and the trigger -



CREATE TRIGGER [dbo].[tr_Task_U]

ON [dbo].[_Task]

FOR UPDATE, INSERT AS

IF UPDATE (TaskType_Status) OR UPDATE (TaskType) OR UPDATE (TaskType_SubType1)

BEGIN

SET NOCOUNT ON;

DECLARE @status AS INT

DECLARE @taskType AS INT

DECLARE @taskSubType AS INT

DECLARE @taskID as sysname

DECLARE @cmd as sysname

DECLARE @parentTask as sysname

DECLARE @NotificationXMLTaskID as sysname



SELECT @status = [TaskType_Status] FROM inserted

SELECT @taskType = [TaskType] FROM inserted

SELECT @taskSubType = [TaskType_SubType1] FROM inserted

SELECT @taskID = [TaskID] FROM inserted

SELECT @parentTask = [Parent_TaskID] FROM inserted

SELECT @NotificationXMLTaskID = [MCCTaskID] FROM _TaskNotificationXML WHERE [MCCTaskID] = @parentTask



IF (@status = 2602) AND (@taskType = 2282) AND (@taskSubType = 19500)

BEGIN

exec WriteXMLNotification @taskID;

END

ELSE IF (@taskType = 2285) AND (@parentTask IS NOT NULL) AND (@NotificationXMLTaskID IS NOT NULL)

BEGIN

exec WriteXMLNotification @parentTask;

END



END


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Please advise!

Thanks in Advance,
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I know how to loop the recordset returned by an ExecuteSQL task:

http://www.sqlis.com/59.aspx

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I assume to now use these as the Available Input columns for the Data Conversion task, I drag a Data Flow task inside the For Each Loop container and double-click it, then add a Data Conversion task.

But the Input columns (which I entered in the Variable Mappings in the ForEach Loop containers) dont show up in the Available Input columns of the Data Conversion task.

How do I link the Variable Mappings in the ForEach Loop containers from the recordset returned by the Execute SQL Task to the Available Input columns of the Data Conversion task?

.......................

If this is not possible, and the advice is to use the OLEDB data flow as the input for the Data Conversion task (which is something I tried too), then the results from an OLEDB Command (using EXEC sp_myproc) are not mapped to the Available Input columns of the Data Conversion task either (as its not an explicit SQL Statement and the runtime results from a stored proc exection)

I would like to use the ExecuteSQL task to do this as the Package is clean and comprehensible. Which is the easiest best way to map the returned results from a Stored proc execution to the Available Input columns of any Data Flow transformation task for the transform operations I need to execute on each row of data?

[ Could not find any useful advice on this anywhere ]

thanks in advance!

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Hi All,

we are working on a web application created in ASP & SQL 2000 environment.
In the code , we have a single connectionstring to connect database.
The application was running fine for the past 3 years, but all of a sudden we are getting "timeout expired" error only in someparts of the application but not on all database access.
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we cannot change the query, it is the most possible way we could get that.

Can somebody help me with the possible solution.


Thanks & Regards,
Sai. K.K

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(1 row(s) affected)
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-------------------------------------------As a side note, below is a small portion of my stored proc where the error is being raised:
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BEGIN

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CODE
====================================================
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UPDATE tblReportMainMembersSET tblReportMainMembers.membership = tblMemberships.membershipFROM tblMembershipsWHERE tblReportMainMembers.membership = tblMemberships.id
UPDATE tblReportMainMembersSET tblReportMainMembers.emplid = Onecard.dbo.Accounts.CustomFROM Onecard.dbo.AccountsWHERE tblReportMainMembers.emplid = Onecard.dbo.Accounts.Account
SELECT RTRIM(emplid) AS EMPLID,        RTRIM(userid) AS USERID,        RTRIM(fname) AS FNAME,        RTRIM(lname) AS LNAME,         RTRIM(membership) AS MEMBERSHIP,       CAST(price AS varchar(12)) AS PRICE,       RTRIM(approvecode) AS APPROVECODE,       CONVERT(varchar(20), purchasedate, 101) AS PURCHASEDATE,       CONVERT(varchar(20), wpecend, 101) AS WPECEND,       RTRIM(address) AS ADDRESS,        RTRIM(city) AS CITY,       RTRIM(state) AS STATE,        RTRIM(zip) AS ZIP,       RTRIM(homephone) AS HOMEPHONE,        RTRIM(officephone) AS OFFICEPHONE,       RTRIM(email) AS EMAIL, signup AS SIGNUP FROM tblReportMainMembersWHERE fname IS NOT NULL AND lname IS NOT NULLORDER BY lname
As you can tell from the procedure, i copy some records into a report table, do some modifications, and then send the results to the browser. But all of a sudden, i'm getting timeouts on all my users.
But here is the strange part, when i take the above code and run it using Query Analyzer, it works. And then after that, my users are OK running the clients for about 1 week. And then it starts acting up again.
Everytime i run the code in Query Analyzer, i have no more problems for about a week. Weird isn't it.
Any ideas? Thanks in advance.Richard M.

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