SSIS Upward Precedence Execution Flow Issues
Dec 13, 2007
Hi,
I'm building a package wherein I perform a SQL task(A) if the error log is not empty. This same SQL task(A) is also being used by another data flow task(B). The precedence points from B to A bottom to top. When I execute, all the tasks in the downward direction (precedence pointing downward/sideways) execute but this one doesnt as it points updwards. I can copy and paste task A and make B point to A downward, but I dont want to duplicate A in the same package.
Is there any other approach?
If you dont understand the above, see the flow:
X (SQL task) ----on success-------------> A (SQL task)
| ^
| |
...(sequence of steps) |
| |
| |
B(Data Flow Task) ---------failure --------|
Execution flow doesnt move from B to A, even though its a failure condition. Hope this explains the problem.
Thanks and Regards,
Subha Fernando
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May 23, 2008
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.
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Aug 10, 2007
Hi All,
Just needed an insight into the IF-ELSE construct w.r.t its implementation in SSIS or a similar methodology that could be adopted in SSIS while executing a Package.
Scenario : I want to Start with importing data from Different sources to SQL Server Destination. For Which, i define 3 different Data Flow Tasks each involved in importing data from an external source to SQL Server Destination.
1] Text File Inbound Task : Source - Flat File Source ; Destination - SQL Server Dest.
2] Excel Inbound Task : Source - Excel Data Source ; Destination - SQL Server Dest.
3] Xml Inbound Task : Source - XML Data Source ; Destination - SQL Server Dest
Finally i want to execute the package with an IF-ELSE Scenario which will Check for the external Source being :
IF External Source = = Excel file => Execute Excel Inbound Task
ELSE
EXIT
IF External Source = = Text File/Flat File = > Execute Text File Inbound Task
ELSE
EXIT
IF External Source = = Xml File => Execute Xml Inbound Task
ELSE
EXIT
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Apr 13, 2007
I have a package that loads staging tables from an Oracle source DB. In the data flow tab I have 30+ read table/write table task combinations. When I run the package 3-4 of the read/write combos execute at a time. What I'm trying to control is the priority order of the combo execution. My goal is to minimize to total load time by having the larger table transfers run first and the smaller table transfers fill in until they are all complete. Currently, the largest table (16 million) transfers last (because it was the last combo that I created?).
Thanks,
Dave
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Aug 1, 2006
Has anyone come up/determined a generic way to capture and log indicative information within a data flow in SSIS - e.g., a number of rows selected from the source, transformed, rejected, loaded, various timestamps around these events, etc.? I am trying to avoid having to build a custom solution for each of the packages that I will have (of which there will be dozens). Ideally, I'd like to have some sort of a generic component (such as a custom transformation) that will hide the implementation details and provide a generic interface to the package.
It is not too difficult to achieve something similar on the control flow level, but once you get into data flows things get complicated.
Any ideas will be greatly appreciated.
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Apr 18, 2007
Hello all,
Is there documentation somewhere about multiple execution paths in SSIS control flow? I didn't find documentation anywhere. I have a situation where I have two tasks that take considerable time, but could be executed in parallel (to speed up things) and I was wondering whether SSIS supports parallelism.
To illustrate the issues in simultaneous execution, I created a test SSIS package. In the package, I have five tasks, let's call them T1, T2, T3, T4 and T5. The taks are connected with "green arrows" like this:
T1->T2
T1->T3
T2->T4
T3->T4
T5 is not connected. The tasks can be e.g. Send Mail tasks, that's not relevant to this issue. I put a breakpoint in each task and execute the package.
When I execute package, T1 and T5 become active, i.e. the arrow that displays where the package execution currently is, is in two tasks simultaneously. Now F10 (step over) doesn't seem to work "Unable to step. Not implemented". If I press F5 nothing happens. After I press F5 for a second time tasks T1 and T5 and executed. Why don't they execute with the first pressing of F5? I would additionally like to know whether these two tasks are executed in parallel or sequentially, i.e. in the same thread or in two threads? Is there documentation of this?
The execution stops at T2&T3. Again, pressing F5 doesn't do anything, but the second time I press F5 T2 and T3 are executed.
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Aug 6, 2007
I wish to use the same data to update 2 different tables.
There is no green arrow output from the OLE DB data destination, so I can't have another component following on from the first insert.
This means I have to use the Multicast to 'copy' the data prior to the first table insert.
I can then use the data to perform inserts to both tables.
However, there is an FK constraint between these two tables, so I need to wait until the first table insert has finished before performing the second table insert.
How can I do this? How can I make the second insert dependent on the first?
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May 17, 2007
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,
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Aug 31, 2007
Dear Friends,
In my controlFlow I have 2 sequence container... Sequence1 goes to Sequence2 if an expression valuate to TRUE.
If the expression value is true, than there isn's any problem and sequence2 runs, but if the expression is FALSE the sequence2 container doesn't run.
OK?
In the case of expression valueate to FALSE I need to generate an error or an information in order to get it in the eventhandler automatic...
I can add a script task to make the package failure... but what I insert in the precedence constraint editor from Sequence1 to the scripttask?
Imagine... the expression from Sequence1 to Sequence2 is a>=b
The expression from Sequence1 to ScriotTask os a<b? (How can I define this only to run when the expression (seq1 to Seq2) is false??
Someone know how?
Regards!
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Dec 5, 2007
I have DTSX package where all the Control Flow Boxes are connected by precedence constraints (the Green Lines).
However, only half of them visible!
If I try and add another it says:
Cannot create connector.
Only one workflow can exist between the same two executables.
I don't want to have to drop and create them all the constraints (because there are a lot of them!)
But I can't even do that - since I can't see them, I can't select them; and I don't think I can delete them without being able to select them. Am I missing something? Zooming in makes everything larger, but it doesn't make my Green Lines reappear.
Help!
And yes, I'm using the latest version of everything:-
Microsoft Visual Studio 2005
Version 8.9.50727.762 (SP.050727-7600)
SQL SERVER 2005
9.00.3054.00 SP2 Developer Edition
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Aug 27, 2007
Dear all,
I've been searching the article for error handling in SSIS but seems no article have same problem exactly as mine. In my package there's container, it contains Data Flow task and some of Script tasks. I put an error precedence from Data Flow task into Script task that contains script for log an error that might be occured. The Data Flow task imports data from flat file into SQL Server 2005 and I've set a semicolon as the column delimiter. Unfortunately there is a data in flat file that had one column contain semicolon as its value.
This would trigger an error and I hope the error would be logged into a table as I wrote inside Script task. But it didn't work. The error precedence won't work, the package stop in flat file source instead. I've been trying the event handler but it didn't work either. Maybe I got wrong implementation, anybody can help me explain the error handler and solve the problem ?
Here is the capture of my package, since I didn't know how to attach the picture in this forum.
Thanks in advance.
Best regards,
Hery
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May 29, 2006
Hi guys,
I would like to know what happens during the different phases when executing a data flow task. I noticed that there are the validation, prepare for execute, pre-execute, execute, post-execute, and cleanup phases.
We all know that the execute phase is the actual execution of the desired data flow (source to destination) but I was wondering what the other phases do. Knowing what happens during those phases will help me optimize the whole execution. 1 question raised by someone here is "what is the difference between the Prepare for Execute phase and the Pre-Execute phase? and what does the validation phase do?
Thanks in advance for the help you can give
Kervy
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Oct 29, 2006
This is more a medium level annoyance than a problem. When I save a package, close it and later re-open it, the precendence constraints end up all over the place making my neatly layed out diagram a shambles.
Call me anally retentive if you like (you wont be the first ), but I find this extremely annoying. Does anybody else have this problem? Does anyone have a solution?
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Apr 25, 2008
I have one Data flow, which trasfer data into two table (Parent & Child) .
My question is : Is there a way, i can load data first into parent and then child table. because child table getting load first after that parent table loading. (Execution should be Source Parent --> Destination Parent) First , (Source Child --> Destination Child) Second.
In my case its executing reverse. So i have foreign key constraints at child table , its giving foreign contraints error while running ssis package
Can any one tell me,
How to define my own sequence execution at the Data flow task (Source - Destination) ?
Thanks
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Dec 7, 2005
I have a SSIS (CTP June 2005) package with several data flow tasks. One data flow has 2 OLEDB data sources which are then unioned together, followed by a conditional split, then a derived column transformation, which feeds into an OLEDB destination. When I run the package, this particular data flow seems to run fine and then just stops. There are no errors and the records counts don't move. I've used data viewers to look at the data and it seems fine. I've switched the OLEDB destination with a flat file and execution runs fine, then switched back to OLEDB and it hangs again (over and over). There's nothing unusual about the OLEDB destination, and all the other OLEDB destinations work fine. It also seems to hang on the same destination row number count, but again that row has been verified as valid. In fact, I dropped the DB table and recreated it with no constraints and all fields nullable, but the problem persists. Help?
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Sep 10, 2006
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???
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Oct 25, 2006
Greetings.
I'm trying to conditionally execute a dataflow based on the presence of a data file. If the data file isn't present, I'd like to execute gracefully without error.
Logic is as follows:
If FileExists Then
execute dataflow
Else
exit w/o error
End If
I've got the code ready to go, but I'm not sure how to do this conditional branch logic. Right now, the code calls the Dts.Results.Success / Failure. The problem, however, is Failure is exactly that... which doesn't result in the graceful exit I'm looking for.
Anyone have any ideas?
Thanks in advance.
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Feb 20, 2007
Hi, folks!
I got a serious problem with an SSIS-Import. My packages import from a foreign source into a kind of temp-table (actually it's not a temporary table, it´s just filled with data and truncated after completion of the package), do some transformations and then I got a data flow task that simply copies all the rows from the "temp" to the final table. I get the following errors (here there are two simultanious copy operations from two different "temps" into the same final table.
Error: 0xC0202009 at _temp to finaltable 5 2 1, OLE DB Destination [16]: An OLE DB error has occurred. Error code: 0x80004005.
An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80004005 Description: "Transaction (Process ID 68) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.".
Error: 0xC0209029 at _temp to finaltable 5 2 1, OLE DB Destination [16]: The "input "OLE DB Destination Input" (29)" failed because error code 0xC020907B occurred, and the error row disposition on "input "OLE DB Destination Input" (29)" specifies failure on error. An error occurred on the specified object of the specified component.
Error: 0xC0047022 at _temp to finaltable 5 2 1, DTS.Pipeline: The ProcessInput method on component "OLE DB Destination" (16) failed with error code 0xC0209029. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running.
Error: 0xC0047021 at _temp to finaltable 5 2 1, DTS.Pipeline: Thread "WorkThread0" has exited with error code 0xC0209029.
Error: 0xC02020C4 at _temp to finaltable 5 2 1, OLE DB Source [1]: The attempt to add a row to the Data Flow task buffer failed with error code 0xC0047020.
Error: 0xC0047038 at _temp to finaltable 5 2 1, DTS.Pipeline: The PrimeOutput method on component "OLE DB Source" (1) returned error code 0xC02020C4. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing.
Error: 0xC0047021 at _temp to finaltable 5 2 1, DTS.Pipeline: Thread "SourceThread0" has exited with error code 0xC0047038.
Information: 0x40043008 at _temp to finaltable 5 2 1, DTS.Pipeline: Post Execute phase is beginning.
Information: 0x402090DF at _temp to finaltable 5 2 1, OLE DB Destination [16]: The final commit for the data insertion has started.
Information: 0x402090E0 at _temp to finaltable 5 2 1, OLE DB Destination [16]: The final commit for the data insertion has ended.
Information: 0x40043009 at _temp to finaltable 5 2 1, DTS.Pipeline: Cleanup phase is beginning.
Information: 0x4004300B at _temp to finaltable 5 2 1, DTS.Pipeline: "component "OLE DB Destination" (16)" wrote 5041 rows.
Task failed: _temp to finaltable 5 2 1
Warning: 0x80019002 at KDStat_alles_412: The Execution method succeeded, but the number of errors raised (7) 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.
Task failed: 412
Warning: 0x80019002 at kdstat_alles_master: The Execution method succeeded, but the number of errors raised (7) 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.
Error: 0xC0202009 at _temp to finaltable 1 2 1, OLE DB Destination [4468]: An OLE DB error has occurred. Error code: 0x80004005.
An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80004005 Description: "Transaction (Process ID 82) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.".
Error: 0xC0209029 at _temp to finaltable 1 2 1, OLE DB Destination [4468]: The "input "OLE DB Destination Input" (4481)" failed because error code 0xC020907B occurred, and the error row disposition on "input "OLE DB Destination Input" (4481)" specifies failure on error. An error occurred on the specified object of the specified component.
Error: 0xC0047022 at _temp to finaltable 1 2 1, DTS.Pipeline: The ProcessInput method on component "OLE DB Destination" (4468) failed with error code 0xC0209029. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running.
Error: 0xC0047021 at _temp to finaltable 1 2 1, DTS.Pipeline: Thread "WorkThread0" has exited with error code 0xC0209029.
Error: 0xC02020C4 at _temp to finaltable 1 2 1, OLE DB Source [1]: The attempt to add a row to the Data Flow task buffer failed with error code 0xC0047020.
Error: 0xC0047038 at _temp to finaltable 1 2 1, DTS.Pipeline: The PrimeOutput method on component "OLE DB Source" (1) returned error code 0xC02020C4. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing.
Error: 0xC0047021 at _temp to finaltable 1 2 1, DTS.Pipeline: Thread "SourceThread0" has exited with error code 0xC0047038.
Well, it looks like those two processes simply deadlock each other. But there are 11 Simultanious Data Imports which all go fine. The Issue only occurs at those two. The structure of the packages is exactly the same everywhere.
Is it possible that a previous update-sql query hasen´t committed properly and locks the datasets?
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Jun 3, 2015
I have the following table:
SELECT 'A' as Item, '1' as Version, 0 as Counter, '01-01-2011' as CreatedDate UNION ALL
SELECT 'A' as Item, '1.1' as Version, 1 as Counter, '01-02-2011' as CreatedDate UNION ALL
SELECT 'A' as Item, '1.2' as Version, 2 as Counter, '01-03-2011' as CreatedDate UNION ALL
SELECT 'B' as Item, '1.2' as Version, 0 as Counter, '01-01-2011' as CreatedDate UNION ALL
[Code] .....
I want to write a script where if a user enters the version number, then the output should show all the upward and downward nodes..e.g. if a user selects '1.2' version then following should be the output
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Apr 4, 2008
Hi.
I building some reports with SSRS, and showing data in a table. The table has one Details row that forms at the end multiple rows with the tree view (+ and -).
Is there a way to open the tree view upwards and not downwards so that the children of level 2, 3 etc come over the parent row?
I've goggled it everywhere, but I don't seem to find the answer. If anyone could help me out, I would appreciated.
Thanks
Novi
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Oct 3, 2007
I would like to see if someone can help me out.
Scenarion:
1.- SSIS Package execute tasks on 2000 SQL Server Database
2.- Execution takes places using Business Intelligence Studio
Question:
1.- How can I tracked that SQl 2000 tasks took place using a SSIS Package?
Thanks
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Aug 22, 2007
I am having a hard time with what appears to be something simple. I want to import an excel spreadsheet into a table on a daily basis from a command line. I created a package from the Import Wizzard in the SQL Management Studio and saved it. Since I want a clean table each day, my process needs to be create a temp table, import from the Excel file into the temp table. If that is successful, delete the original table and rename the temp table the original name. The point of this process is to provide for a fail-safe if there is some unforseen problem downloading the data on a particular day.
When I run the package, the first thing it does is delete the original table. I know this because the process shows the time that it finished is before anything else has started or finished. The time shown for the completion of the data flow task is about 2 minutes after that time.
This is maddening!!! The one thing I do not want to happen I can not seem to prevent. I have my control flow set on success. Why does it do this?
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Jul 2, 2007
There is a table with a column that contains Xml documents. For each record from my Data Flow Source, I want to pass in the Xml document and the node to interrogate, and return the value contained in the node. Like the Crm component, this is probably one I will have to write from scratch in C#, but I would like to avoid having to create the custom component if it already exists in the public arena.
Does anyone know of any Xml Ssis Data Flow Components that are downloadable for free?
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Sep 7, 2007
I was working all day making changes to my 3MB package. I was adding a large number of transforms that were copied-and-pasted from elsewhere in the same data flow task.
All was going well. I even took the time to have SSIS lay out the task again (1/2 hour). Suddenly I started receiving some strange errors:
After the layout, I noticed two stray components 'way off in the upper right corner. I found that one of them had a duplicate name to a component which had been added hours ago. Even after deleting it, I got "duplicate name" errors.
I copied three components in one selection, and when I tried to paste them, got the error "can't initialize component on paste". I tried them one at a time, but got the same error.
I got errors about COM failures due to marshalling to another thread
I then exited Visual Studio and started it again. To my great surprise, the data flow task I was working on was still there, but was completely empty.
Comparing what I'm left with to my last version in source control, I find that the entire pipeline element is missing from the DTS: ObjectData element!
I'm developing a real love/hate relationship with SSIS. It varies from one day to the next. Guess what kind of day this is!
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Jun 1, 2006
Hi,
I am using SSIS in SQL Server 2005 and want to have a query like this in my data flow task
Select a.*
from abc as a
inner join (Select max(b.id) as ID from xyz as b inner join pqr as c on b.id = c.id and b.id > ?) as t1
on t1.id = a.id
SSIS fails to detect the parameter (?) for the inner query and gives message.
"
Parameters cannot be extracted from the SQL command. The provider might not help to parse parameter information from the command. In that case, use the "SQL command from variable" access mode, in which the entire SQL command is stored in a variable.", so assuming this is your problem, then you can workaround.
"
The idea is to parameterize the inner query ,,,
(so if the above query doesnt make sense ignore it )
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Sep 28, 2006
Hi, there,
I am having some problems with the loading of tab delimited text file (source) to a SQL Server table (destination) using the SSIS data flow task. Package has been executed successfully with no error msg. The number of rows in the text file also matches the number of rows in the SQL table. But, when I check the content of the table, I noticed some of the columns contain NULL which supposed to have value. This happens not to all the rows but only to some rows. I did some testing by removing some rows from the beginning, middle and end of the text file and re-run the package but the result is quite inconsistent. Sometimes, the field got filled, but sometimes, it just contains NULL where it supposed to have value.
What will be the possible causes to this?
Thanks in advance.
Regards,
Yong Hwee
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May 26, 2008
Hi,
I am experiencing an error where the ssis data flow task would freeze and stop data export from a oledb source to a text file. It doesn't generate any errors the ssis package would just hang. This only happens when I run it in 64 bit mode. When I change the mode to 32 bit the ssis never freezes and runs fine. Has anyone experience this? Is there a fix so I can run my jobs in 64 bit mode?
Thanks,
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Sep 19, 2007
Hi ,
Is there any option to use OLE DB Source in Script Component?
Thanks
Aravind.
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Feb 29, 2008
Hi!
When I add a Data Flow Task to a package, save it and then close. When I open it again, I get 3 errors and the detail of the Data Flow Task is empty.
I had try to uninstall and install my SQL Server 2005, but the problem continues.
Can some one help me on this?
Sérgio Cardoso
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Sep 29, 2007
Hi,
I have a SSIS Package which I would like to modify using SSIS API. I need to put new component between some two existing data flow's components. During this process I need to disconnect two data flow's components using SSIS API. How can I do that?
Thanks,
Rafal
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May 2, 2007
I am loading a lot of Excel and CSV files to SQL Server. Some loading may fail for various reasons. I want a file either be load as a whole or nothing. Currently I keep a list of failed filename and remove it at the end (I add a column for source file name).
Any better way to make sure a file is loaded as a whole or nothing?
Thanks,
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Oct 29, 2014
I would like to know how I can add the following sample code to my Source data on Data Flow on SSIS, or what other options there are. The main issue is time as we have talking about 100's of millions of rows
select Sample,
CASE
WHEN Sample IS NULL
THEN NULL
WHEN SUBSTRING(Sample, 1, 6) IS NULL
THEN ' '
ELSE RTRIM(SUBSTRING(Sample, 1, 6))
END AS [Sample_1_6]
from TestTable
what I have done at this stage is just to Create a SQL task with a Insert into
INSERT INTO [dbo].[TestTable1]
([Sample]
,[Sample_1_6])
select Sample,
CASE WHEN Sample IS NULL =THEN NULL
WHEN SUBSTRING(Sample, 1, 6) IS NULL THEN ' '
ELSE RTRIM(SUBSTRING(Sample, 1, 6))
END AS [Sample_1_6]
from TestTable
If there is a way adding this to a dataflow so I van use fast load that would really be the best solution. I know there are derived columns, but would this really be faster than the straight insert into in a SQL Task? If this is the way to go what is the code I would use in the derived column or any other option.
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