Setup 5 Dataflow Tasks In Series Or Parallel?

Jan 19, 2008

I've create a package that currently uses 5 DataFlow tasks connected in series to get data from 5 different files and place that information into 5 different temp tables. Each Dataflow task contains only a OLE Source, a row count and a OLE destination. My question is - Is it normal practise to keep each of these separate, or should I put them all into a single DataFlow? The package should only continue if all five dataflow task complete successfully.

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Rerunning Package With Parallel Tasks

Jun 26, 2007



Hello,



I have done a search and have read some of the posts, but am left more confused than before. I am fairly new to SSIS. Here is my situation and what i am trying to accomplish.



I have a package that has a sequence container, in which there are multiple SQL tasks (about 20) running in parallel. I have checkpoints enabled, and FailPackageOnFailure enabled as well. If the package fails, when i re-run the package it will run the last task as well as all the other tasks. What I am looking to accomplish is when the package is re-run, have the SQL tasks that failed ran and not the previous successful tasks.



I think the best way would be via disabling tasks on successful completion of a task, where it writes the name of the SQL task to a temp table, but I am skeptical.



Can anyone point me in a direction to help me accomplish what I am looking for please.



Thanks in Advance.

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Error Executing Parallel SQL Tasks

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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Oct 24, 2006

Hi,

I have a master package with a sequence container with around 10 execute package tasks (for child packages), all in parallel. Checkpoints has been enabled in the master package. For the execute package tasks FailParentOnFailure is set to true and for the sequence container FailPackageOnFailure is set to true.

The problem i am facing is as follows. One of the parallel tasks fails and at the time of failure some of the parallel tasks (say set S1) are completed succesfully and few are still in execution (say set S2) which eventually complete successfully. The container fails after all the tasks complete execution and fails the package. When the package is restarted the task which failed is not executed, but the tasks in set S2 are executed.

If FailPackageOnFailure is set to true and whatever be the FailParentOnFailure value for the execute package task, in case of restart the failed package is executed but the tasks in set S2 are also executed.

Please let me know if there is any setting that only the failed task executes on restart.



Thanks in advance

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Aug 23, 2006

Hi

I have a SQL Server 2000 instance running on a Windows Server 2003 box with 4 processors. SQL Server is configured to use all 4 processors, and use all available processors for parallelism.

I have created a simple DTS package which has 2 "execute external process" tasks with no precedence constraints between them. There are no connections required or defined for the two tasks (sequential
processing is forced on tasks sharing connections). The DTS package
properties have the "limit the number of tasks to execute in parallel"
set to 4.

However, despite the above configuration, the two steps are never executed in parallel, but always sequentially.

Does anyone have any ideas as to why these tasks are not being executed in parallel?

Any suggestions welcome.

Thanks.

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I have a scenario where i have to run update task on multiple servers in parallel and once all of them are completed (success or failure) another task is to be run on another server

1. in maintenance plan, if we add tasks which are not joined, will they run in paralled at the same time
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the business requirement behind this is to bring data from multiple servers into shadow copies locally and then process them together. its ok if some server data transfer fails, but its not ok to start processing centrally while data transfer is going on. further, we want to run data transfer from multiple servers in paralleled to save time.

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May 28, 2007

Hi,



I have a problem with the task "event watcher".



I've made a query like the one in msdn (SELECT * FROM __InstanceCreationEvent WITHIN 10 WHERE Targetinstance ISA "CIM_DirectoryContainsFile" and TargetInstance.GroupComponent= "Win32_Directory.Name="e:\\temp""). I have 20 similar tasks for watching in different folders, but when there are too much tasks in parallel, it doesn't work anymore. I change the numbers of executables to 128 (in the general properties of the package (to test)) but it doesn't seems to work.

I don't understand why it works when there are only 1 or 2 (6 seems to be the maximum) tasks and not if there are more than 6.



Could you help me with this issue?



Configuration : Windows Server 2003, SQL Server 2005, SSIS, Sql Server Agent



Thanks a lot.



Julien.

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Mar 29, 2008

Thanks in advance in reading this thread.



I have developed a big SSIS package to extract data from flat-files ( + 200 Dataflows ).

The situation is the following, inside de SSIS package, there are a lot of validations before extracting & loading the flat-files, i'm running this validations in paralell, so that when a file arrives, it enters the "validation process" and start extracting the file.

When i run the SSIS package from BIDS it works the way i have concepted it... but when i run the ssis in the server, the tables that are loaded through the process are only "available" when the SSIS PACKAGE ends, it is imperative that trough the process, when a table receives new data, it becomes ready, and don't just be available when the SSIS package finishes...

I have attached the an lousing .jpeg.

It is importart for the tables to be available, so the stored procedures(OUTSIDE SSIS PACKAGE) that are dependent of some tables, start working before the SSIS package Ends.


Thanks in Advance.

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Dec 27, 2007



hi all;
i have a doubt;
can we modify the data / format the data in a dataflow task?
Requirement

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2. Convert data "Dec-07"(Mon-YY format) into "Dec-2007"(Mon-YYYY)
3. OLEDB Destination

how to do the second step?

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Hi,
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Cheers

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Mar 30, 2008

Thanks in advance in reading this thread.



I have developed a big SSIS package to extract data from flat-files ( + 200 Dataflows ).

The situation is the following, inside de SSIS package, there are a lot of validations before extracting & loading the flat-files, i'm running this validations in paralell, so that when a file arrives, it enters the "validation process" and start extracting the file.

When i run the SSIS package from BIDS it works the way i have concepted it... but when i run the ssis in the server, the tables that are loaded through the process are only "available" when the SSIS PACKAGE ends, it is imperative that trough the process, when a table receives new data, it becomes ready, and don't just be available when the SSIS package finishes...

I have attached the an lousing .jpeg.

It is importart for the tables to be available, so the stored procedures(OUTSIDE SSIS PACKAGE) that are dependent of some tables, start working before the SSIS package Ends.


Thanks in Advance.

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Jan 22, 2008

Hello,


How would you do a log in a massive rows loading, I'm having problems because every row error(because of casting, format, lookup) in a transformation task is redirected to a text file as a log, this is ok when only exist one error by row, but in the case when I have two errors in the same row detected by diferents transformation tasks only the first one is reported to the text file, I have to wait to the second information load, after I correct the first error, to find the second one, I need to validate as many errors exists by row in the same load...

which component or which strategy can I use in a SSIS Packge to achieve this?

thanks

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Hi,

I am creating dataflow tasj using following

Imports Microsoft.SqlServer.Dts.Runtime

Imports Microsoft.SqlServer.Dts.Pipeline

Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper

These refer to Microsoft.SqlServer.DTSPipelineWrap.dll and Microsoft.SQLServer.DTSRuntimeWrap.dll. While these assemblies were already there in my dev machine I don't find these files in production enviornment for SQL server 2005. I am refering these assemblies from following path in my local machine : C:Program FilesMicrosoft SQL Server90SDKAssemblies.

How to install these assemblies in prod env, offcource one option is to copy it and then put it in GAC thru script . Why does not it gets installed while installation of SQL server 2005. Are these assemly dependent on SP1 ?

Thanks

Mohit

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Dec 6, 2005

I have a dataflow task that reads a large amount of data from a textfile source. At the same time i load a mainbook which holds totals for each segment. In the end of that dataflow task i check for difference with a conditional split ([amountmainbook] - [amountsource]) > 1 which points to rowcount task that writes to a variable.

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Dear Friends,

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I need to execute a query and need the records for dataflow... with OLE DB command I cant see the fields returned... :-(

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Thanks!!

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May 31, 2007

Hi, all experts here,



Thank you very much for your kind attention.



I encountered a very strange problem again. Why the time series displayed on the chart are so strange? The Key time column I chose for my time series algorithm is cal_month(e.g 199001...), but why the date displayed on the time series chart is like :05/06/2448? (it should be like 199001..?) What is that data? And where exactly did it come from? What is the exact cause of this?



Hope it is clear for your help.

I am really confused on this and thanks a lot for your kind advices and help and I am looking forward to hearing from you shortly.



With best regards,



Yours sincerely,

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There's some other strange things, so I wonder if they are related. 

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Aug 21, 2007



Hi,All.
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Do smb know how to solve the problem?

*******************************tc below********************
[Test]

[Category("Access")]

public void UpdateGroupUserTable(/*Int32 userID, GroupList dataset*/)

{

r.BeginTransaction();

try

{

r.UpdateGroupUserTable(userId,gl);

}

finally

{

r.Rollback();

}
*******************************tested method below********************

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{

CheckDisposed();

UpdateCommand.CommandType = CommandType.Text;

UpdateCommand.Parameters.Clear();

UpdateCommand.Parameters.Add("@USERID", userID);

BeginTransaction();

try

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Adapter.Update(dataset.acl_group);

Commit();

}

catch (SqlException)

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throw;

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