Transact SQL :: Executing Stored Procedures Asynchronously / In Parallel

May 30, 2015

I have about 30 different reports that I want to pull into a dashboard. I need to make sure that they don't execute in serial to get good performance.

There are two ways I can approach it

1) I can create a stored procedure for each report and then make sync calls for each of the reports from the web site. So, basically this will be controlled from the web end.

2) I can do this from the SQL Server database, if there is someway to execute these stored procedures in parallel.

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Transact SQL :: Executing Stored Procedures And Threading

Jul 10, 2015

If I have several stored procedures, all of them making inserts/updates to the same tables, what is the safest way to run them in sequence?

The context is an asp.net application; I have an aspx page where a click on a button (or more) will launch stored procedures in execution. I have encountered the unfortunate situation before, when stored proc #2 started long before stored proc #1 finished and this caused problems. 

If I group all stroed procs in one that simply calls all of them in the needed sequence:

exec stproc1
exec stproc2
.....
exec stprocn

Will they execute in a single thread? Is there any guarantee that stproc2 will be executed when stproc1 finishes, and so on?

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Feb 19, 2015

I have a stored procedure. It can be executed like this

exec test @p = 1;
exec test @p = 2
exec test @p = n;
n can be hundred.

I want the sp being executed in parallel, not sequence. It means the 3 examples above can be run at the same time.
If I know the number in advance, say 3, I can create 3 different Execution SQL Tasks. They can be run in parallel.

However, the n is not static. It is coming from a table. 

How can I execute Stored Procedures in PARALLEL and DYNAMICALLY ?

I think about using script task. In the script, I get the value of n, and the list of p, from the table, then running a loop with. In the loop, I create a threat and in the threat, I execute the sp like : exec test @p = p. So the exec test may be run parallel. But I am not sure if it works.

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Feb 22, 2008

Is it possible to execute a child package from a parent package ashnchronously.


I have a SQL Server table containing a list of packages to execute. I want to create a master package that will query this table, and execute each of the packages asynchronously.

I've tried using the Execute Package task and also executing packages programtically from a Script task, but these only seem to work synchronously.

I have also seen suggestions about executing packages asynchronously from T-SQL by starting a job, however, I'd rather not have to dynamically create jobs for each package I want to execute.

Any ideas would be welcome. Or even an answer of "No this is not possible".


Thanks in advance

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Nov 2, 2006

I have the following sp..REATE Procedure SSSP_VehicleReg_Add    @DECAL_NO varchar  (9)   , @NAME varchar  (26)  , @SSN varchar  (9)   , @DLN varchar  (10)   , @Address_1 varchar    , @Address_2 varchar    , @City varchar  (50)  , @State_Code varchar    , @Zip_Code varchar  (9)  , @Country_Code varchar  (4)   , @PHONE varchar  (12)   , @VM varchar  (10)   , @MODEL varchar  (10)   , @VLPNUMBER varchar  (10)   , @VLPSTATE varchar  (2)  , @Date_Iss datetime, @Date_Exp datetime, @tran_Date datetime, @Op_Code varchar (20) , @ReturnStatus   integer output, @ReturnMessage  Varchar (50) output /* Adds a record to the Vehicle Registration table.*/ AS     If @Decal_no = ' '          Begin  Set @ReturnStatus = 0         Set @ReturnMessage = 'Record not added Key Fields are not valid'  End     Else          If dbo.VehicleReg_Check (@Decal_No) = 0       Begin    Insert INTO VehicleReg (Decal_NO, Name, SSN, DLN, Address_1, Address_2, City, State_Code,                            Zip_Code, Country_Code, Phone, VM, Model, VLPNUMBER, VLPSTATE,                             Date_Iss, Date_Exp, Tran_Date, Op_Code)                  Values   (@Decal_NO, @Name, @SSN, @DLN, @Address_1, @Address_2, @City, @State_Code,              @Zip_Code, @Country_Code, @Phone, @VM, @Model, @VLPNUMBER, @VLPSTATE,               @Date_Iss, @Date_Exp, @Tran_Date, @Op_Code)    Set @ReturnStatus = 1         Set @ReturnMessage = 'Record added'          End     Else        Begin  Set @ReturnStatus = 0         Set @ReturnMessage = 'Record not added' EndGO That is being called via...Dim SqlCmd As New SqlCommand("SSSP_VehicleReg_ADD", MYGF.cnMydb)Dim Current_Time As String = CStr(Now.Date + Now.TimeOfDay)SqlCmd.CommandType = CommandType.StoredProcedureSqlCmd.Parameters.Add("@Decal_No", SqlDbType.VarChar, 9, txtDecal.Text)SqlCmd.Parameters.Add("@NAME", SqlDbType.VarChar, 26, txtName.Text)SqlCmd.Parameters.Add("@SSN", SqlDbType.VarChar, 9, txtStuid.Text)SqlCmd.Parameters.Add("@DLN", SqlDbType.VarChar, 10, txtDln.Text)SqlCmd.Parameters.Add("@Address_1", SqlDbType.VarChar, 50, txtAddress_1.Text)SqlCmd.Parameters.Add("@Address_2", SqlDbType.VarChar, 50, txtAddress_2.Text)SqlCmd.Parameters.Add("@City", SqlDbType.VarChar, 50, txtCity.Text)SqlCmd.Parameters.Add("@State_Code", SqlDbType.VarChar, 2, ddlState.Text)SqlCmd.Parameters.Add("@Zip_Code", SqlDbType.VarChar, 9, txtZip.Text)SqlCmd.Parameters.Add("@Country_Code", SqlDbType.VarChar, 4, " ")SqlCmd.Parameters.Add("@PHONE", SqlDbType.VarChar, 12, txtPhone.Text)SqlCmd.Parameters.Add("@VM", SqlDbType.VarChar, 10, txtMake.Text)SqlCmd.Parameters.Add("@MODEL", SqlDbType.VarChar, 10, txtModel.Text)SqlCmd.Parameters.Add("@VLPNUMBER", SqlDbType.VarChar, 10, txtTagNo.Text)SqlCmd.Parameters.Add("@VLPSTATE", SqlDbType.VarChar, 2, " ")SqlCmd.Parameters.Add("@Date_Iss", SqlDbType.DateTime, 8, txtIssDate.Text)SqlCmd.Parameters.Add("@Date_Exp", SqlDbType.DateTime, 8, txtExpDate.Text)SqlCmd.Parameters.Add("@tran_Date", SqlDbType.DateTime, 8, Current_Time)SqlCmd.Parameters.Add("@Op_Code", SqlDbType.VarChar, 20, "xxxx")Dim ReturnStatus As New SqlParameter(("@ReturnStatus"), SqlDbType.Int, 1, ParameterDirection.Output)Dim ReturnMessage As New SqlParameter(("@ReturnMessage"), SqlDbType.VarChar, 50, ParameterDirection.Output)SqlCmd.Parameters.Add(ReturnStatus)SqlCmd.Parameters.Add(ReturnMessage)SqlCmd.ExecuteNonQuery()Which fails with the following error...System.Data.SqlClient.SqlException was unhandled by user code  Class=16  ErrorCode=-2146232060  LineNumber=0  Message="Procedure 'SSSP_VehicleReg_Add' expects parameter '@DECAL_NO', which was not supplied."  Number=201  Procedure="SSSP_VehicleReg_Add"  Server=  Source=".Net SqlClient Data Provider"  State=6  StackTrace:       at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)       at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)       at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)       at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)       at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)       at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)       at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)       at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)       at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()       at Vechicle_Registration.Move_to_database() in C:InetpubwwwrootssccintranetVechicle_Registration.aspx.vb:line 304       at Vechicle_Registration.BtnSave_Click(Object sender, EventArgs e) in C:InetpubwwwrootssccintranetVechicle_Registration.aspx.vb:line 34       at System.Web.UI.WebControls.Button.OnClick(EventArgs e)       at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)       at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)       at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)       at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) Any help would be appreciated      

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Nov 2, 2006

I changed "@Decal_No" to "@Decal_NO" same error 

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Jun 9, 2004

Hello,

I know that syscomments stores the stored procedures in chunks of 4000 characters. Some of my Stored proc's are >4000 characters.I use a temporary table to stock them after some modifications made to them.How can I execute them one by one, do i need to concatenate one whole stored proc's text in one single line(if yes, how can that be done?) Can variables be dynamically created, assigned values and then destroyed? Please help.

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Jan 29, 2007

Hi All,I am running SQL2000. Can anyone tell me how I can use the contents ofa table as parameters for a stored procedure that resides on adifferent SQL server?I have a table:Customers:Cust_IDCust_NameCust_ContactCust_PhoneI need to execute a stored procedure and pass each of the above asparameters:@CustID, @CustName, @CustContact,@CustPhoneThe stored procedure also returns an error code.Thanks,Danny

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Jul 3, 2007

I have a table with a list of stored procedures, I iterate using a Foreach loop which i iterate through an ADO.NET recordset that I created by executing a select SQL statement.



Now my problem is that in the foreach loop i have an execute sql task container which basically just executes these stored procedures using the 'exec ?' statement (i grab the name of each procedure into a variable). However, error trapping seems to be very difficult. I just figured out how to get a ReturnCode from the execute statement, but apparently I have to use it outside the Execute SQL task ....prolly use an IF condition to see if its not 0....but how do I go about doing this?



Also, I want to error trap if a stored procedure doesnt execute because of some error, how could i possibly handle an error like that? I dont want the foreach iteration to stop on an error because a stored procedure wasnt called either, but currently it does stop the entire package.



Thoughts anyone?

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Aug 15, 2007

I am having trouble executing a series of 4 stored procedures from VB. The connection code connects and the first 3 stored procedures run through, although the 4th procedure stops running mid execution. No errors are reported to VB. When I run the series of procedures in the SQL Server Query Analyzer everything completes as it should. Anyone have any suggestions on what could be the problem?

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Nov 28, 2007

Hey guys,
I have found out that we can execute multiple queries and receive multiple resultsets in a SqlDataReader by executing the queries with ";" separators,
However, what if we wanted to execute two sqlcommand storedprocedures? are there any other way rather than placing "Execute sp1;Execute sp2" in the command text?
I would like to do it in a way whereby I can pass in two storedprocedures with parameters binding capability rather than execute sp1(param1, param2);execute sp2(param1, param2, param3)
Hope to get some suggestions and advice from you guys,
 Thank you very much in advance.

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Oct 21, 2007

Hi
I have a database created on SQL Server 2000 server. And I have created a new database with SQL Server2005. I want to extract some data from old SQL Server2000 database. I have written a SP at SQL Server 2000 database and I want to know how to execute a SQL Server2000 SP from SQL Server2005.

Thanks & Regards!

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Jan 8, 2008



I would be grateful if someone can provide some kind of explanation over why this issue has happened.

I had the following statements in a query window.

exec dbo.usp_sProc1
go
exec dbo.usp_sProc2

go
exec dbo.usp_sProc3
go


In order to monitor the progress of each procedure, I have a table called progress_log into which each step executing in the procedure is written. Each procedure has a "Begin" and "End" text written to this progress_log.

When I clicked the execution button on the window, I made the assumption that each stored procedure will finish before the next one executes. However something different happened.


The progress_log shows the following

S/N proc_Name Step
1 sProc1 Begin
2 sProc1 sProctep1
3 sProc1 sproc1: Step2

4 sproc1 sproc1tep3
5 sProc2 sproc2:Begin
6 sProc2 sProc2tep1
7 sproc2 sProc2tep2
8 sproc2 sproc2:End
9 sProc3 Begin
10 sProc3 Sproc3: Step1


From the above (S/N: 5) , it can be seen that the procedure did not finish executing Sproc1 because there was no "END" statement written to the Progress_Log before the "Begin" statement of SProc2.

On checking the error_log, I found there were no errors in the stored procedure. However, a message was written to the query window about insufficient space on the database at S/N:10 in the log above.

How is it possible that the Sproc2 stored procedure can be started without the Sproc1 stored procedure having ended?

I can give more explanation if not clear.

many thanks for any help


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... Executing Stored Procedures In An INSERT Statement ...

Aug 28, 2002

I am trying to simulate the <sequence name>.nextval of oracle in SQL Server 2000.

The situation is that i need to be able to run programmatically INSERT statements. In Oracle I am able to do INSERT INTO TABLE_A (ID, NAME) VALUES (TABLE_A_SEQUENCE.NEXTVAL, 'MIKKO') in a single prepared statement in my code.

I know that to recreate this in SQL Server 2000 I need to create a stored procedure and table to set up a way to generate "the next value" to use in my INSERT. but the schema below forces me to do my insert in 2 steps (first, to get the next value. second, to use that value in the INSERT statement), since I cannot execute the stored procedure inside my INSERT statement.

Is there any way for me to generate values within my INSERT statement that would simulate Oracle's <sequence name>.nextval and allow me to execute my INSERT in 1 line of code?

TABLE
-----
CREATE TABLE sequences (
-- sequence is a reserved word
seq varchar(100) primary key,
sequence_id int
);

MS SQL SERVER STORED PROCEDURE:
-------------------------------
CREATE PROCEDURE nextval
@sequence varchar(100)AS
BEGIN
-- return an error if sequence does not exist
-- so we will know if someone truncates the table
DECLARE @sequence_id int
set @sequence_id = -1

UPDATE sequences
SET @sequence_id = sequence_id = sequence_id + 1
WHERE seq = @sequence

RETURN @sequence_id
END

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May 28, 2007

Hi. Does anyone know how to display the results if i execute "xp_fixeddrives, xp_availablemedia and xp_subdirs" commands with VC++ 6.0? I can't obtained the results using Recordset class. Can someone help me? Thank you.



|_N_T_|

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I just thought I would share this info:

I created the package to download 4 ftp files at once.
I set the MaxConcurrentExecutables for the SSIS package to 4. So in BIDS in downloads 4 files at the same time.

However, when I started the job I noticed that only 3 files were downloaded at the time (looking at temp files in download directory)

Solution:
Sure enough after digging around for awhile - in Step properties for SSIS package - there is execution tab - and "Maximum Concurrent Executables" was -1 (which for some reason defaults to 3 concurrent processes even on our dual CPU server) - so after chanign that value to 4 - tada - all 4 files in parallel

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Jul 26, 2007

I have user XY in SQL 05. I would like to find all stored procedures, where user XY has permission for executing. Is there any way to find it than look in every stored procedure?

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Jul 18, 2007

I'm a new developer to both SQL Server 2005 & Windows 2003, so forgive me if this question seems a little too basic. I'm coming from a Oracle and UNIX background.



I've create a stored procedure in SQL Server 2005. I now want to execute this from the command line in Windows 2003. Eventually, I want our UNIX scheduler, autosys (which runs on a different UNIX machine obviously) to be able to execute this. In my old environment, I created a UNIX shell script as a wrapper let's say 123.sh. This shell script would accept as a parameter the name of the stored procedure I wanted to execute. If this stored procedure also had parameters it needed to be passed to it, I would have strung these values out in the command line in UNIX. Two examples of how the command line in UNIX I used to execute the Oracle stored procedure might look are listed below.



123.sh sp_my_stored_procedure input_parm1 input_parm2



123.sh sp_different_stored_procedure input_parm1



This way anytime I created a new stored procedure, I could reuse the shell script wrapper 123.sh and just pass in the name of the newly created stored procedure and any parameters it needed.



How can I accomplish this same type of functionality in the SQL Server 2005/Windows 2003 environment.



Thanks, Jim

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Mar 29, 2006

I have three SQL tasks executing in parallel in an Integration Services package.

  +-B-+
A-+-C-+-E
  +-D-+

It starts with task A; then B, C, and D all execute in parallel; and finally task E runs after BCD are done.

B, C, and D are all Execute SQL tasks, all with the same connection manager. Here is their code:

B) SELECT CASE WHEN COUNT(*) = 0 THEN 0 ELSE 1 END AS Process
     FROM temp_B

C) SELECT CASE WHEN COUNT(*) = 0 THEN 0 ELSE 1 END AS Process
     FROM temp_C

D) SELECT CASE WHEN COUNT(*) = 0 THEN 0 ELSE 1 END AS Process
     FROM temp_D

Each one is setting a binary value to a package variable (using Result Set settings) based on the count of records from different tables.

This works with no problems when I run it against one server (development). But when I switch to the production server, task B and D both fail. I'v checked to make sure all of the temp tables exist in the database for that connection manager and that all three have the same connection manager - all is okay.

Here's the trickier part. When I'm still pointing to the production server and I run these tasks individually, they are all successful. It is only when they are attempting to run in parallel that they fail.

Here is the Output error:
Error: 0xC002F210 at Process Med?, Execute SQL Task: Executing the query "SELECT CASE WHEN COUNT(*) = 0 THEN 0 ELSE 1 END AS Process FROM temp_B" failed with the following error: "Invalid object name 'temp_B'.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.

What could be causing this? I'm at a loss.

 

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I am using Excel VBA to run a stored procedure which executes a package using the built-in SQL Server stored procedures. The VBA passes two values from excel to the stored proc., which is then supposed to pass these "parameters" to the package to use as a variable within the package.

@Cycle sql_variant = 2
WITH EXECUTE AS 'USER_ACCOUNT' - account that signs on using windows authentication
AS
BEGIN
SET NOCOUNT ON;
declare @execution_id bigint

[code]....

When I try to execute the package, from SQL Server or Excel using the Macro I built, I get the following error:"The parameter '[User::Cycle]' does not exist or you do not have sufficient permissions." I have given the USER_ACCOUNT that runs executes the stored procedure permission to read/write to the database and the SSIS project folder.

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Hi,

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If yes, how?
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Thanks in advance.

Regards,
B@ns

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Trigger code:--
CREATE TRIGGER [tr_DBA_create_database_notification] ON ALL SERVER 
AFTER CREATE_DATABASE
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Hi

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All -

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