SSIS Data Flow Task Slows During Bulk Insert
May 31, 2007
I have an SSIS Package which is designed to import log files. Basically, it loops through a directory, parses text from the log files, and dumps it to the database. The issue I'm having is not with the package reading the files, but when it attempts to write the information to the db. What I'm seeing is that it will hit a file, read 3000 some lines, convert them (using the Data Conversion component), and then "hang" when it tries to write it to the db.
I've run the SQL Server Profiler, and had originally thought that the issue had to do with the collation. I was seeing every char column with the word "collate" next to it. On the other hand, while looking at the Windows performance monitor, I see that the disk queue is maxed at 100% for about a minute after importing just one log file.
I'm not sure if this is due to the size of the db, and having to update a clustered index, or not.
The machine where this is all taking place has 2 arrays- both RAID 10. Each array is 600 GB, and consists of 8 disks. The SSIS package is being executed locally using BIDS.
Your help is appreciated!
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May 31, 2006
Hi Guys,
The way I understand a Data Flow Task is that it inserts the rows from the source to destination one by one. Is there a way to make it act like a bulk insert task? We have been experiencing performance issues when inserting a lot of rows from one table to another. If there's no way to actually do it, can a bulk insert task functionality be scripted? Coz what I need is a table to table insert, and the bulk insert task only accepts data files as sources.
Thanks!
Kervy
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Dec 7, 2007
We are using an OLE DB Source for the Data Flow Source and OLE DB Destination for the Data Flow Destination. The amount of data being moved is about 30 million rows, and it is gather using a sql command. There is not other transformations in between straight from one to another. The flow starts amazingly fast but after 5 million rows it slows considerably. Wondered if anyone has experienced anything similar with large loads.
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Nov 2, 2006
I'm importing a large csv file two different ways - one with Bulk Import Task and the other way with the Data Flow Task (flat file source -> OLE DB destination).
With the Bulk Import Task I'm putting all the csv rows in one column. With the Data Flow Task I'm mapping each csv value to it's own column in the SQL table.
I used two different flat file sources and got the following:
Flat file 1: Bulk Import Task = 12,649,499 rows; Data Flow Task = 4,215,817 rows
Flat file 2: Bulk Import Task = 3,403,254 rows; Data Flow Task = 1,134,359 rows
Anyone have any guess as to why this is happening?
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Jan 29, 2008
I need to call a stored procedure to insert data into a table in SQL Server from SSIS data flow task.
I am currently trying to use OLe Db Destination, but I am not sure how to map inputs to OLE DB Destination to my stored procedure insert.
Thanks
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Mar 12, 2008
I am using SQL 2005 SSIS. I am joining several large tables and then the move result into another table in the same database.
I would like know which method is faster:
Use Execute SQL Task to insert the result set to the target table
Use the Data Flow Task to insert the result set to the target table. (Use OLE DB source to execute SQL command and then use the SQL destination)
Could you tell me why then other is slower?
Thanks.
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Sep 19, 2006
i need to do a bulk insert for every csv file from a particular folder & i wish to do this programatically.
i hav tried a "foreach" loop & using variables for the filenames but it doesnot seem to be working & i just cant figure out why !!
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Aug 28, 2006
hi,
i have a bulk insert task and i want to transfer to the source connection each time a different
text file name. how do i transfer to the connection source field a parameter with a new name
each time. the name will b excepted as a parameter to the package. can i do it in a bulk insert
task?
thx,
Tomer
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Oct 5, 2006
I would like to get the rowcount from a bulk insert task to validate that all the data is being inserted correctly. So far the only way that I can see this being done is through a trigger on the target tables. I would like to have this information inside the DTS package. Can anyone help me?
Thanks
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Apr 15, 2008
Hi, ALL
I have a confusion with Bulk Insert task for several days.
Here is what Books Online say, which i totally understand---
"The source file that the Bulk Insert task loads can be on the same server as the SQL Server database into which data is inserted, or on a remote server. If the file is on a remote server, you must specify the file name using the Universal Naming Convention (UNC) name in the path."
Now, If my Bulk Insert task (within a package) is on one server, say ETL ( so when i run the package, it will run from ETL server); but, My destination table where data will be inserted, is in another server, say PROD. So, My OLEDB connection will be pointing to a remote server .Now, If my text file is on ETL server, do i have to give UNC path?..Or If i have text file on the same server as my destination ( here PROD) do i Have to Give UNC naming?. I found in several places that Bulk insert Task runs on that server where its connections points to.
My scnerio: I have multiple SSIS packages. Now These packages will be on ETL server, but all the databases will be hosted on PROD server. Now for my Bulk Insert , I asked them to keep all flat file on ETL server(where packages will be ). Looks like this will give me a problem later, since all my Destination will be on PROD server, during bulk insert , sql server will go and look for those files on PROD server rather than ETL server? Or i AM confused here?......
Say package.dtsx is On SER1which useses bulk insert tasks..
My OLEDB connection is SERV2 database B and Table T
Now my flat file connection is D:myfilefile.txt
Now when i run this task where does these txt file will be pulled from. Does it pulls from local server (SER1) or does it goes to SERV2 looking for txt file.
I tried several combinations of moving files to different servers, yet i have no conclusions.
Thanks, Kumar
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Sep 28, 2007
I have created an SSIS Package that takes data in an excel file and writes it to an Oracle Database. The excel file has 5 columns, but the database tabls has many additional columns. I would like to default some of these other columns for this job. For instance, I want to set the created and updated times to the time when the job ran, and set some other fields to values that will be consistent for every row in the job.
How do I accomplish this?
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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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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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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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May 15, 2008
I have two SSIS packages that import from the same flat file into the same SQL 2005 table. I have one flat file connection (to a comma delimited file) and one OLE DB connection (to a SQL 2005 Database). Both packages use these same two Connection Managers. The SQL table allows NULL values for all fields. The flat file has "empty values" (i.e., ,"", ) for certain columns.
The first package uses the Data Flow Task with the "Keep nulls" property of the OLE DB Destination Editor unchecked. The columns in the source and destination are identically named thus the mapping is automatically assigned and is mapped based on ordinal position (which is equivalent to the mapping using Bulk Insert). When this task is executed no null values are inserted into the SQL table for the "empty values" from the flat file. Empty string values are inserted instead of NULL.
The second package uses the Bulk Insert Task with the "KeepNulls" property for the task (shown in the Properties pane when the task in selected in the Control Flow window) set to "False". When the task is executed NULL values are inserted into the SQL table for the "empty values" from the flat file.
So using the Data Flow Task " " (i.e., blank) is inserted. Using the Bulk Insert Task NULL is inserted (i.e., nothing is inserted, the field is skipped, the value for the record is omitted).
I want to have the exact same behavior on my data in the Bulk Insert Task as I do with the Data Flow Task.
Using the Bulk Insert Task, what must I do to have the Empty String values inserted into the SQL table where there is an "empty value" in the flat file? Why & how does this occur automatically in the Data Flow Task?
From a SQL Profile Trace comparison of the two methods I do not see where the syntax of the insert command nor the statements for the preceeding captured steps has dictated this change in the behavior of the inserted "" value for the recordset. Please help me understand what is going on here and how to accomplish this using the Bulk Insert Task.
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Apr 18, 2008
Hello,
I'm just learning SSIS and I've hit my first bump. I am doing a bulk import from a tab delimited text file to an empty sql table that has a Idendity column defined. How do I tell the bulk insert task to skip that column when inserting from the text file. If I remove the identity column it imports the data fine, but I want to create the indentity column in the table too.
Thanks.
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Apr 18, 2006
I have a relatively simple SSIS package that I'm building for a data mining process. The package starts with an OLE DB data source, passes the results of a SQL Command (query) along to a conversion step, which then gets sent to a Term Lookup task. The Term Lookup then writes the result to an OLE DB Data Destination. Pretty simple. The OLE DB data source query returns about 80,000 rows if you run it through SQL WB. The SSIS editor shows 9,557 rows make it out of the source, and into the conversion step, 9,557 make it out of the conversion and into the lookup, and about 60,000 rows make it out of the lookup and are written to the results table. Then the package fails with the following errors listed on the progress screen. I was assuming that the 9,557 was some type of batching that was occurring in the process, but now I'm not so sure.
Thoughts?
Frank
[DTS.Pipeline] Error: The ProcessInput method on component "My Component" (117) failed with error code 0xC02090E5. 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.
[DTS.Pipeline] Error: Thread "WorkThread0" has exited with error code 0xC02090E5.
[DTS.Pipeline] Error: Thread "WorkThread1" received a shutdown signal and is terminating. The user requested a shutdown, or an error in another thread is causing the pipeline to shutdown.
[DTS.Pipeline] Error: Thread "WorkThread1" has exited with error code 0xC0047039.
[My Data Source Error: The attempt to add a row to the Data Flow task buffer failed with error code 0xC0047020.
[DTS.Pipeline] Error: The PrimeOutput method on component "My Component" (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.
[DTS.Pipeline] Error: Thread "SourceThread0" has exited with error code 0xC0047038.
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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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Nov 28, 2005
I am creating a staging database in which I am loading required tables from 2 different sources.
I have 30 different tables to load from source 1 and 10 different tables from source 2.
This is the way I am doing, in Control flow task I am using Sequence container and in that I included the data flow task, the data flow task
has source OLD DB connection from where I select the table and then destination OLE DB connection where I load the data.
So for 30 tables I have one Sequence container with 30 different data flow task and each data flow task has OLE DB source and OLD DB destination.
I wanted to find out if this is the efficient way to do, or if there is any other way to do this.
And for source 2 shall I put in another package or shall I use the same package with different sequence container and follow the same steps
as for Source 1 tables.
Please advice.
Thanks,
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May 17, 2007
I have just installed Service Pack 2 on my SQL 2005 Standard Edition.
However, now all my SSIS packages will not allow me to open my Data FLow Tasks. I get the following error:
TITLE: Microsoft Visual Studio
------------------------------
Cannot show the editor for this task.
------------------------------
ADDITIONAL INFORMATION:
The task returned an unsupported control editor type. (Microsoft.DataTransformationServices.Design)
If I try to create a new Data Flow task I get:
TITLE: Microsoft Visual Studio
------------------------------
Failed to create the task.
------------------------------
ADDITIONAL INFORMATION:
The designer could not be initialized. (Microsoft.DataTransformationServices.Design)
I have tried to install the latest hotfixes after this but they had no effect.
Can anybody help me???? Please?
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Apr 8, 2008
I receive the following error message when I try to use the Bulk Insert Task to load BCP data into a table:
Error: 0xC002F304 at Bulk Insert Task, Bulk Insert Task: An error occurred with the following error message: "Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.The bulk load failed. The column is too long in the data file for row 1, column 4. Verify that the field terminator and row terminator are specified correctly.Bulk load data conversion error (overflow) for row 1, column 1 (rowno).".
Task failed: Bulk Insert Task
In SSMS I am able to issue the following command and the data loads into a TableName table with no error messages:
BULK INSERT TableName
FROM 'C:DataDbTableName.bcp'
WITH (DATAFILETYPE='widenative');
What configuration is required for the Bulk Insert Task in SSIS to make the data load? BTW - the TableName.bcp file is bulk copy file as bcp widenative data type. The properties of the Bulk Insert Task are the following:
DataFileType: DTSBulkInsert_DataFileType_WideNative
RowTerminator: {CR}{LF}
Any help getting the bcp file to load would be appreciated. Let me know if you require any other information, thanks for all your help.
Paul
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Apr 11, 2007
I need to extract data to send to an external agency in their supplied format. The data is normalised in our system in a one to many relationship. The external agency needs it denormalised.
In our system, the parent p has p_id, p_attribute_1, p_attribute_2, p_attribute_3 and the child has c_id, c_attribute_a, c_attribute_b, c_parent_id_fk
The external agency can only use a delimited file looking like
p_id, p_attribute_1, p_attribute_2, p_attribute_3, c1_attribute_a, c1_attribute_b, c2_attribute_a, c2_attribute_b, ...., cn_attribute_a, cn_attribute_b
where n is the number of children a parent may have. Each parent can have 0 or more children - typically between 1 and 20.
How can I achieve this using SSIS? In the past I have used custom built VB apps with the ADO SHAPE command but this is not ideal as I have to rebuild each time to alter the selection criteria and and VB is not a good SQL tool.
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Dec 4, 2006
Hi all,
I met a problem when trying to pass values to a SQL statement through parameters. It's a data flow task. I used the OLE DB connection. My statement is like the statement below(the real statement is little complex):
Select * from myTable where mydate>? and mydate<?
I used the "set query parameter" dialogbox to bulid two parameters varStartTime and varEndTime, the values for the two parameters were set to "1/1/2005" and "12/30/2006" respectively. But when I click the "Parse query" button, I got errors
Parameter Information cannot be derived from SQL statements. Set parameter information before preparing command.
I have referred to the posts, but the problem still exists. Any help will be highly appreciated. Thanks a lot!
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May 22, 2008
Hi All,
I have a requirement here to import data from XML file to SQL Database. The XML schema contains of various elements and one of the element is recursive ie. Parameter node contains parameter node within it and it can have n number of iterations. I have given the sample schema below:
<xs:element minOccurs="0" name="Parameter">
<xs:complexType>
<xs: sequence>
<xs:element minOccurs="0" name="ID" type="xs: string" />
<xs:element minOccurs="0" name="Description" type="xs: string" />
<xs:element minOccurs="0" name="Type" type="xs: string" />
<xs:element minOccurs="0" name="Parameter">
<xs:complexType>
<xs: sequence>
<xs:element minOccurs="0" name="ID" type="xs: string" />
<xs:element minOccurs="0" name="Description" type="xs: string" />
<xs:element minOccurs="0" name="Type" type="xs: string" />
<xs:element minOccurs="0" name="Parameter">
<xs:complexType>
<xs: sequence>
<xs:element minOccurs="0" name="ID" type="xs: string" />
<xs:element minOccurs="0" name="Description" type="xs: string" />
<xs:element minOccurs="0" name="Type" type="xs: string" />
</xs: sequence>
</xs:complexType>
</xs:element>
<xs:element minOccurs="0" name="Parameter">
...............
</xs: sequence>
</xs:complexType>
</xs:element>
</xs: sequence>
</xs:complexType>
</xs:element>
But all the nodes contain the data which has to be imported to a single table dbo.Parameters. I cannot use Union ALL since i dont know how many iterations I will have in the file. Is there any way to do this operation in Data Flow Task using XML Source? Can anyone help me on this?
Thanks,
Dhileep
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Dec 28, 2007
Hi,
I'm trying to implement an incremental data pull (Oracle to SQL) based on Andy's blog:
http://sqlblog.com/blogs/andy_leonard/archive/2007/07/09/ssis-design-pattern-incremental-loads.aspx
My development machine is decent: 1.86 GHz, Intel core 2 CPU, 3 GB of RAM.
However it seems the data flow task gets hung whenever I test the package against the ~6 million row source, as can be seen from these screenshots. I have no memory limitations on the lookup transformation. After the rows have been cached nothing happens. Memory for the dtsdebug process hovers around 1.8 GB and it uses 1-6 percent of CPU resources continuously. I am not using fast load to insert new records into my sql target table. (I am right clicking Sequence Container 3 and executing this container NOT the entire package in the screenshots)
http://i248.photobucket.com/albums/gg168/boston_sql92/1.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/2.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/3.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/4.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/5.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/6.jpg
The same package works fine against a similar test table with 150k rows.
http://i248.photobucket.com/albums/gg168/boston_sql92/7.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/8.jpg
The weird thing is it only takes 24 minutes for a full refresh of the entire source table from Oracle to the SQL target table.
Any hints,advice would be appreciated.
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May 2, 2006
I get the following error when trying to import (have tried flat files, Excel & Access). I've searched but have not found a resolution. Any help is appreciated.
Jeff
Validating (Error)
Messages
Error 0xc00470b6: Data Flow Task: The LocaleID 0 is not installed on this system.
(SQL Server Import and Export Wizard)
Error 0xc004706b: Data Flow Task: "component "Source - Test1" (1)" failed validation and returned validation status "VS_ISBROKEN".
(SQL Server Import and Export Wizard)
Error 0xc004700c: Data Flow Task: One or more component failed validation.
(SQL Server Import and Export Wizard)
Error 0xc0024107: Data Flow Task: There were errors during task validation.
(SQL Server Import and Export Wizard)
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Jul 2, 2010
In my SSIS Data Flow Task, I have a query that retrieves data based on a couple of date parameters. Is there a way we can pass/use the Variables defined in the SSIS package in the query ?
(I am assigning values to those variables from C# code)
The query should look like this:
select ordernumber, customerid from salesorder
where statecode=3 and datefulfilled between @variable1 and @variable2
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Jul 19, 2007
Hi all,
We are running SQL Server 2005 Standard edition on a Vista Business machine. Whenever we try to use DTS to import or export data we get this message:
The SSIS Data Flow Task could not be created. Verify that DTSPipeline.dll is available and registered.
Of course we have explicitly registered this dll and others.
Also we reinstalled SQL Server (and did it again. And did it again).
And we did the same for Visual Studio Standard (and again).
Any ideas in this elaborate group?
Thanks,
Tjerk
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Jan 2, 2007
Hi Guys,
I
have a flat file which is loaded into the database on a daily basis.
The file contains rows of strings which I load into a table,
specifically to a column of length 8000.
The string has a length of 690, but the format is like 'xxxxxx xx xx..'
and so on, where 'xxxx' represents data. So there are spaces, etc present in the middle.
Previously
I used SQL 2000 DTS to load the files in, and it was just a Column
Transformation with the Col001 from the text file loading straight to
my table column. After the load, if I select len(col) it gives me 750
for all rows.
Once I started to migrate this to SSIS, I
allocated the Control Flow Task and specified the flat file source and
the oledb destination, and gave the output column a type of String and
output column width of 8000. But when I run the data flow task it
copies only 181 or 231 characters out of the 750 required.
I feel it stops where it finds the SPACES and skips the rest.
I
specified row delimiters or CR, and LF. I checked the file under
UltraEdit and there were no special characters in the file that would
cause the problem.
Any suggestions how I can get it to load the full data?
Thanks
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Jun 4, 2015
I have huge data and i am loading data from EXCEL to database table, after loading 80 percent data i am getting some error. My package got failed and it has lots of transformation and took around 6 hours to process completely because of that i don't want it to reload from start. if i run it again it should start from next record from where i got the error.
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Oct 12, 2007
Hi,
I ran my package and it was successfu. I tried running it again, but this time it throws me this error:
Dim_T_Account [56575]: Unable to prepare the SSIS bulk insert for data insertion.
Error: 0xC004701A at CallerType, CallerChannel, Dealer, DODealer, HotlineType, Model, Reg'l Signal Code, Account, Contact, DTS.Pipeline: component "Dim_T_Account" (56575) failed the pre-execute phase and returned error code 0xC0202071.
Information: 0x40043008 at CallerType, CallerChannel, Dealer, DODealer, HotlineType, Model, Reg'l Signal Code, Account, Contact, DTS.Pipeline: Post Execute phase is beginning.
Why suddenly without changing anything, i encountered this error? What does it mean it cannot prepare the SSIS bulk insert. My connection to server is working ok.
cherriesh
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