What are the advantages and disadvantages of having multiple data flow tasks in one SSIS package?
Is this a good idea at all considering the workflow may be similar now but may change in the future? Should it be left as one data flow per package?
HI All,
In several threads there has been discussion regarding adding connection managers to a package's data flow, etc. My challenge is that I have a large solution that contains many packages, and I need to change the connection manager linked to the data flow in all of the packages. When the solution was initially designed, data sources were used, and it has become a tedious maintenance issue to keep those in sync. We want to use a standard OLEDB connection manager, but adding a connection manager to each package and editing the corresponding data flow tasks in each package to use that new connection manager is a daunting task. I've coded a .Net module to access the packages, remove the old connection manager (data source) and add the new OLEDB data source. However, as I traverse the objects in the package hierarchy, when I come to the data flow object, the innerobject is not a dts object, but rather a _com object.. I can't seem to find any documentation/examples as to how to iterate the tasks within a data flow and change the connection manager. If you have any information, that would be quite helpful. If you reply with a code sample, if you would be so kind as to relate it to one of the sample packages provided with SSIS so I can run it, that would be great.
Thank you.
Steve.
Suppose if I have a “Foreach Loop Container” that iterates over a list. Is it possible to execute different data flow tasks based on the input?
Example : List contains elements L1, L2 & L3.
ForEach Loop Container checks the input. If its L1 then it should execute DF Task1, If L2 then execute
DF Task2 and similarly for L3.
Is it possible to achieve this?
Dear All!
My package has a Data Flow Task. In Data Flow Task, I use a Script Component and a OLE BD Destination to transform data from txt file to database.
Within Data Flow Task, I want to call File System Task to move file to a folder or any Task of "Control Flow" Tab. So, Does SSIS support this task? Please show me if any
Thanks
I would like to fetch the data flow component name while package is executing. Since system variable named [System::SourceName] only fetches name of the control flow tasks? Is there a way to capture them?
View 5 Replies View RelatedHi folks,
I have come across a situation where there 10 tasks. The second task on the flow is a script task which disables all further tasks based on a condition. I thought that the logic would be better if we force terminate the package successfully at this stage itself. How can this be done.
Thanks
Subhash Subramanyam
Hi all...
I'm creating a SSIS in the designer view of SQL Server BI Dev. Studio (SQL Server 2005)
I need to import a whole table from MS Access into my local SQL Server.(this task will be performed weekly, so once working I'll schedule a job for it)
I've created a 'FILE' connection to MS Access in the 'Connection Managers'.
When I'm on the 'Data Flow' tab I can't find a Data Flow Item to use as a MS Access connection.
(available on the 'Data Flow Sources' are only: DataReader, Excel, Flat File, OLE DB, Raw File and XML Sources)
What am I doing wrong/missing?
Thanks for your help.
Hello.
I am using the "SSIS Log Provider for SQL Server" to log events to a table for "OnError" and "OnPostExecute" events of a package. This works as expected and provides a nice clean output on the execution steps of the package.
I am curious as to why I do not see any detail for any/all tasks that fall under the "Data Flow" section of the package though. For instance, on my "Control Flow" tab, I added a "Data Flow" task that simply loads a few tables from a target to destination server. However, there is nothing shown in the logging output. Just that a Data Flow task was initiated. And when I'm configuring this logging under "SSIS-->Logging" in the checkbox area on the left, you cannot "drill into" data flow steps.
Is there a reason why there is no detailed logging for Data Flow tasks? Would getting to that require me to create a custom log provider?
Thanks for the help.
Greg
I want to get the start time of data load and end time after data load and store it in a table which has mapping_id , mapping_name,start_time,end_time.
i use ActiveXScript task to get the start time before data load and store the mapping_id in a global variable,then data flow transformation occurs.
i want to use a global variable to store the mapping id ,so that i can update the end time after data load with that variable.how to do this?
is there any other way, i can get the start and end time of data load (other than the logging information)?
I am using SSIS to populate a star schema.
The issue is in the data flow for loading and setting the Fact table dimension keys (the dimensions are all loaded fine). After 16 rather pedestrian Lookup Transformations, I have an escalating problem adding additional Lookup transforms to the Data Flow. The problem is not in execution; the problem is adding more transforms in design mode.
Lookup # Fields in Data Flow Time to validate that lookup
<17 47 Sub-second
17 48 2 sec
18 49 4 sec
19 50 8 sec
20 51 16 sec
21 52 32 sec
22 53 64 sec
While Im intrigued by the mathematical progression that is forming here, the issue is that I have at least 6 more Lookups to perform. I hope you can see my dilemma.
I have gone to where it takes a little over 4 minutes each to validate the lookup transform and its associated Derived Column transform and Union transform (Total 12 Minutes). Not only does this add up to many idle minutes to each design step, BUT it breaks the debugger as it pre-validates the ENTIRE data flow before it ever switches into debugging mode.
Some notes:
1. It doesnt matter what order the Lookup transforms occur in, the timings are exactly the same.
2. I tried many Data Flow execution optimizations, but they dont improve the validation times (or even get a chance to improve the execution times!)
I realize this may be somewhat of a unique problem.
Thanks for any help you are able to lend.
-Dave
When I copy over an SSIS package I have been developing from my laptop to my desktop with Windows File Sharing (shared folders) across a home network, the moved package fails to load properly. I can see the Control Flow tasks but not the Data Flow tasks - they simply disappear! I have update the Connection Managers to point to the new machine, and tested them (OK).
Its the same as this issue posted here
And Here
Creating an empty package and clicking to create a new data flow cause this error:
TITLE: Microsoft Visual Studio
------------------------------
Failed to create the task.
------------------------------
ADDITIONAL INFORMATION:
The designer could not be initialized. Microsoft.DataTransformationServices.Design)
Seems the only way is to uninstall and reinstall Client Components.
How do I uninstall and reinstall Client Components? when I try to do that, SQL Server Setup tells me "None of the selected features can be installed or upgraded. Setup cannot procees since there is no effective change being made to the machine...."
I had selected "Workstation components, Books online and Development tools". This is already installed - so how I can reinstall it if I get this message above which does not let me proceed.
I created a SSIS package and several data flow componenets for this package.
What does strategy exist to deploy SSIS package and data flow components into a enterparise server?
Thanks in advance.
We're experiencing a problem where intermittently our SSIS packages will hang. There are no log errors or events in the event viewer. It will happen whether the package is executed from the SQL Job Agent or run from BIDs. When running from BIDs it appears to hang inside one of the data flows (several parallel pipes with sorts, merge joins etc...). It appears to hang in multiple pipes within the data flow component. The problem is reproducable, we just kill it and re-run, and it appears to hang in the same places.
Now here's the odd thing: as we simply open and close some of the components in the pipe line after the place it hangs, a subsequent run will go further in the pipeline before hanging. If we open and close all the components after the point it initially hung, the data flow will run fine, from there on out. When I say "open and close" I mean no changes are made, we simply double-click the component, like a merge join, then click 'close.'
To me this does not seem like a memory problem but likely something is wrong with the metadata, where opening a component and closing it somehow alters the metadata to "right it".
This seems to occur intermittently after we make modifications to the package. It's like if you make any mod, even unrelated to the data flow, you then have to go through and open and close every component in your package to ensure it will work. Again, no errors or warnings are fired.
Has anyone seen this type of problem?
Hello,
I have created around 10 seperate packages for our application data load. Now I am planning to create a master package (or a wrapper package) which will execute all the 10 packages (thru execute package task). Then I have a job which executes the master package at a given date and time.
Question : How can I enable / disable execution of each package within the master package depending upon a flag variable. The reason why I need this mechanism is if the flag = 0 then I don't want all 10 packages within master package to execute and if flag = 1 then master package execution should begin and subsequently execute all packages within that master package.
Thank you
Jatin Shah
Hi guys,
i got a foreach loop that has about 20 data flow tasks(same database connections but different extractions) but i notice that when i execute the project it only runs 4 data flow tasks at a time.
i know that there is an option for each data flow to set the "Engine Threads", but is there a way to set the thereads in a foreach loop or for the whole project so it will execute all data flow tasks in one go for each loop.
please help???
Hi guys,
i have a for each loop and it has about 20 data flow tasks (simple data extractions). i notice when i run the package it only runs up to 4 data flow tasks at a time. others have to wait till one of the first 4 flows finishes.
i was wondering if there's a way to change the limit of how many data flow tasks can run at a time. is there a property some where ?
i know this will be stressfull to the server, but the server is well equiped with CPU power and memory, so performance will not be an issue.
any thoughts?
hi in my package, some sql operations need the special user name and admin privilage. so how do i create my ssis package so that when it executes it takes the given username and password from the table in some database.
View 8 Replies View RelatedHey all, is there any explanation why just opening a data flow task causes a VSS check out?
The issue with this is that I have multiple developers, and when one wants to look at a data flow task in a package already checked out, it generates multiple VS errors.
Not big on the priority list, (not as big as the modal dialog issue) but still a pain.
Thanks!
BobP
Hi,
I need to parameterize some values in the data flow so that i can chnage the values directly in parameter file and re run the data flow for new value in the passed in the parameter. This can be easy for other who do not know about the flow of data flow task as to where to change the variable/parameter.
How can this be accomplished. I want the data flow task to refer to this file before it starts executing and pick the appropriate value from the file.
Or is their any better way to accompalish what i want to do here in SSIS.???
tHNAKS FOR UR HELP FOLKS !!!
I have a requirement to read an encrypted file as a data source. I am not allowed to save an unencrypted text file version on disc at any time for any length of time, therefore I created a custom source component that reads an encrypted csv file, decrypts it, and then passes each row of data to the pipeline and ultimately to an ole data destination. Basically it is just a text file reader with an added class that adds functionality that decrypts the file before the component sets columns or reads rows.
The custom component, “Encrypted File Source”, has a custom property “encryptionkey” with the encryption required flag set to true (code below) and is declared as eligible to be set in the expressions.
IDTSCustomProperty100 EncryptionKey = ComponentMetaData.CustomPropertyCollection.New();
EncryptionKey.Name =
"EncryptionKey";
EncryptionKey.Description =
"Secure String key value to decrypt the file";
EncryptionKey.Value =
string.Empty;
EncryptionKey.ExpressionType =
DTSCustomPropertyExpressionType.CPET_NOTIFY;
EncryptionKey.EncryptionRequired =
true;
I want to be able to set the password for the encrypted file in the SQL Agent job that executes the SSIS project. This means I have an environment with a variable, “DataPassword”, that is set to sensitive. It maps to a Project parameter in the SQL Agent job that is also set to sensitive. And I now I want to access that sensitive Project Password inside my data flow, specifically in the Encrypted File source task that I created and set my EncryptionKey to that Project Parameter.
The problem is that SSIS says.
"expression cannot be evaluated. ... The Expression will not be evaluated because it contains sensitive parameter value "$Project::DataFilePassord" . Verify that the expression is used properly and that it portects sensitive information"
((Microsoft.DataTransformationsServices.Controls) "<v:shapetype coordsize="21600,21600" filled="f" id="_x0000_t75" o:preferrelative="t" o:spt="75"
path="m@4@5l@4@11@9@11@9@5xe" stroked="f">
[Code] ....
I am using SQL Server 2012, on a windows 7 box with VS2010 premium.
Hi Guys,
I have yet another question. How can i pass data b/w 2 data flow tasks? I'm trying to get some data from one sql server and then I want to pass this whole bunch of data to another data flow task which is going to get some data from second sql server. I would probably combine them using union all and then save that as a transaction in a third sql server?
Information regarding how to pass the data with some detailed discussion would be fine with me.
thanks
Gemma
I have several sequence containers in one package that fire off execute package tasks. I would like each of the sequence containers to start at the same time when the job starts running. However when I set them up to do that, i get an error that the variable cannot be read because it is locked. I have the variables setup as readonly so not sure why they are being locked. When I run the package and have each sequence container fire off after the previous one ends it runs fine.
Any ideas on how to get around this?
Thanks!
Hi,
How do I retrieve the connections (connection managers) collections from Custom Data Flow destination? ComponentMetadata.RuntimeConnectionCollection is empty. I would like to be able to access all the connections defined in the package from the custom data flow task.
I came across code in which it was possible to access the Connections collection using the IDtsConnectionService for custom task (destination). The custom task has access to serviceProvider, whcih can be used to get access to the IDtsConnectionService interface but not the custom data flow task.
Any help appreciated.
Thanks
Naveen
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.
Hi,
I have a Flat File Source and I want to retrieve few properties of it in an Script Component. How do I?
Also, How could I make the file path of Flat File Source or Connection manager dynamic or configurable through some file ?
any input is appreciated.
Fahad
Is it possible to do? I'm getting lock violations in I try to execute several tasks in parallel.
View 4 Replies View RelatedI'm trying to do some custom SSIS logging using event handlers, similar to the ideas provided by Jamie Thomson in the past. My problem is that when I use System:ourceID as one of the items to be logged, I can't match up the SourceID to any of the GUIDs that are displayed in the property window for the various tasks in my package.
Where is this sourceID coming from and how can I track it down?
Thanks for any insight on this.
John Woods
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.
Hi everyone,
Primary platform is 64 bit cluster.
How to move information allocated in SSIS variables from Data Flow to Control Flow layers??
We've got a SSIS package which load a value into a variable inside a Data Flow. Going back to Control Flow how could we retrive that value again????
Thanks in advance and regards,
I have some "Execute T-SQL Statement Tasks" in a package. I would like to run this same package on another SQL Server without having to change it on the other server. Since the server name can be given when setting up the connection, I think if I leave the server name out then the package could run on any server? Is my assumption correct?
View 10 Replies View RelatedHello
As a beginner I have created some Packages to import Data to SQL Server.
The Packages are running well.
I have created a Task to run the Package on a SQL SERVER 2005 Express. The Task starts.
Then a Execute Package Wizard Picture appears on the Screen.
I have mannually to select the Connection Manager and the Connection String.
After the selection the Task runs without any Problem.
Now I like to get the Task to run without any manual intervention.
I was looking in Internet but could not find a solution.
Can someone give me a hint how to get the Task working without intervention?
Thanks for an early answer.
Regards
Chaepp
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.
Hello,
I want to know detail execution flow of SSIS package (like Validation -> Expression evaluation -> Execution etc.)
Where can I get detail information, any reference (links)?
Thanks in advance.
-Omkar.