Issue While Programmatically Slowly Chaging Dimension.

Dec 12, 2006

Hi,

I am working on Creating an SSIS package to add Slowly Chaging Dimension to the package programmatically.

I have done the following steps:
1. Choosing the connection manager to access the data source that contains the dimension table that you want to update.
You can select from a list of connection managers that the package includes.
2. Choosing the dimension table or view you want to update.
After you select the connection manager, you can select the table or view from the data source.
3. Setting key attributes on columns and map input columns to columns in the dimension table.
You must choose at least one business key column in the dimension table and map it to an input column. Other input columns can be mapped to columns in the dimension table as non-key mappings.
4. Choose the change type for each column.
o Changing attribute overwrites existing values in records.
o Historical attribute creates new records instead of updating existing records.
o Fixed attribute indicates that the column value must not change.
Code://Set the Key Element as part of Creating the SCD Transformation:

instance.SetInputColumnProperty(ID, this.SlowlyChaningDim.InputCollection[0].InputColumnCollection[1].ID, "ColumnType", 1);

//Set one of the ColumnType Properties as Changing Attribute Updates Output

instance.SetInputColumnProperty(ID, this.SlowlyChaningDim.InputCollection[0].InputColumnCollection[15].ID, "ColumnType", 2);

//Set one of the ColumnType Properties as Historical Attributes Updates output.

instance.SetInputColumnProperty(ID, this.SlowlyChaningDim.InputCollection[0].InputColumnCollection[85].ID, "ColumnType", 3);



Now i create an OleDbCommand Transformation to capture "Changing Attribute Updates" (Type-1) output.



this.OledbCommand1 = this.dataflow.ComponentMetaDataCollection.New();

this.OledbCommand1.ComponentClassID = "DTSTransform.OleDBCommand.1";

this.OledbCommand1.Name = "OledbCommand1";

this.OledbCommand1.Description = "ChangingColumnAttribute";



CManagedComponentWrapper oledbinstance = this.OledbCommand1.Instantiate();

oledbinstance.ProvideComponentProperties();



this.OledbCommand1.RuntimeConnectionCollection[0].ConnectionManagerID = package.Connections["OLEDBDestination"].ID;

this.OledbCommand1.RuntimeConnectionCollection[0].ConnectionManager = DtsConvert.ToConnectionManager90(package.Connections["OLEDBDestination"]);

oledbinstance.SetComponentProperty("CommandTimeout", 0);

oledbinstance.SetComponentProperty("DefaultCodePage",1252);



StringBuilder sbquery = new StringBuilder();

sbquery.Append("UPDATE SIRWorkdm..[Engagement] SET [BillingType] = ? WHERE [EngagementId] = ?"); //Here BillingType is the "ChangingColumnAttribute" and EngagementId is the key

oledbinstance.SetComponentProperty("SqlCommand", sbquery.ToString());

---- Need inputs as to how to map the Source and ExternalMetadataColumns.

--------- -------- ------------

this.dataflow.PathCollection.New().AttachPathAndPropagateNotifications(this.SlowlyChaningDim.OutputCollection[3], this.OledbCommand1.InputCollection[0]);





Please advice as to how to proceed further

Thanks,

Sriharsh



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I have one question regarding Slowly Changing Dimension component in SSIS. Does SCD also delete records in warehouse if they does not exist in source anymore, or does SCD only insert new and update existing records? Can someone explain me a little bit more about inferred members? Thanks.

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starttime endtime message
4/8/2008 9:36 4/8/2008 9:36 Execute phase is beginning.

4/8/2008 9:36 4/8/2008 9:36 PrimeOutput will be called on a component. : 1715 : Union All
4/8/2008 9:36 4/8/2008 9:36 A component has returned from its PrimeOutput call. : 1715 : Union All
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4/8/2008 9:37 4/8/2008 9:37 A component has returned from its PrimeOutput call. : 2912 : Staged Queues
4/8/2008 9:37 4/8/2008 9:37 A component has returned from its PrimeOutput call. : 2912 : Staged Queues
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4/8/2008 9:59 4/8/2008 9:59 Rows were provided to a data flow component as input. : : 1688 : Historical Attribute Inserts Output : 1682 : Get End Date : 1683 : Derived Column Input : 645
4/8/2008 9:59 4/8/2008 9:59 Rows were provided to a data flow component as input. : : 1702 : Derived Column Output : 1692 : Update End Date : 1697 : OLE DB Command Input : 645
4/8/2008 10:01 4/8/2008 10:01 Rows were provided to a data flow component as input. : : 1759 : OLE DB Command Output : 1715 : Union All : 1758 : Union All Input 2 : 645
4/8/2008 10:01 4/8/2008 10:01 Rows were provided to a data flow component as input. : : 2970 : DataReader Output : 70 : Slowly Changing Dimension : 81 : Slowly Changing Dimension Input : 9947
4/8/2008 10:24 4/8/2008 10:24 Rows were provided to a data flow component as input. : : 1718 : New Output : 1715 : Union All : 1716 : Union All Input 1 : 3859
4/8/2008 10:24 4/8/2008 10:24 Rows were provided to a data flow component as input. : : 1688 : Historical Attribute Inserts Output : 1682 : Get End Date : 1683 : Derived Column Input : 641
4/8/2008 10:24 4/8/2008 10:24 Rows were provided to a data flow component as input. : : 1702 : Derived Column Output : 1692 : Update End Date : 1697 : OLE DB Command Input : 641
4/8/2008 10:26 4/8/2008 10:26 Rows were provided to a data flow component as input. : : 1759 : OLE DB Command Output : 1715 : Union All : 1758 : Union All Input 2 : 641
4/8/2008 10:26 4/8/2008 10:26 Rows were provided to a data flow component as input. : : 2970 : DataReader Output : 70 : Slowly Changing Dimension : 81 : Slowly Changing Dimension Input : 9947
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4/8/2008 15:34 4/8/2008 15:34 The pipeline received a request to cancel and is shutting down.
4/8/2008 15:34 4/8/2008 15:34 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.
4/8/2008 15:34 4/8/2008 15:34 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.
4/8/2008 15:34 4/8/2008 15:34 The pipeline received a request to cancel and is shutting down.
4/8/2008 15:34 4/8/2008 15:34 Thread "WorkThread1" has exited with error code 0xC0047039.
4/8/2008 15:34 4/8/2008 15:34 Thread "WorkThread1" has exited with error code 0xC0047039.


Notice the time difference between the last OnPipelineRowsSent event and the first OnError event (when I clicked the stop button): 5 hours! In all that time, SSIS did not log a single event, or use more than 2% of my processor or exceed 1GB page file or hit the database even once! I am assuming this means it is simply not doing anything. It is not failing, nor is it executing, it is just sitting there.

Has anyone experienced a similar problem? Does anyone know how I might troubleshoot this? Thanks in advance for any help, and let me know if I need to clarify. Also, I am new to SSIS, so if I am missing something obvious, go easy on me! Thanks.


Mitch Connors

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OLEDB Command Stage Error In SLOWLY CHANGING DIMENSION

Jul 13, 2006

I have created a sample dataflow to parse the employee details (empid,empname,empaddr) from a flat file to oracle 9i database table named employee(columns : empid,empname,empaddress - All are varchar2(15)) using SLOWLY CHANGING DIMENSION transformation for insert/update on the table.

EMPID as Businees key

EMPNAME and EMPADDR as changing attributes.

Connection string is using Microsoft oledb provider for oracle.

I am getting the following oledb command error.

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TITLE: Microsoft Visual Studio
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Error at Data Flow Task [OLE DB Command 1 [2007]]: An OLE DB error has occurred. Error code: 0x80040E51.
An OLE DB record is available. Source: "Microsoft OLE DB Provider for Oracle" Hresult: 0x80040E51 Description: "Provider cannot derive parameter information and SetParameterInfo has not been called.".

Error at Data Flow Task [OLE DB Command 1 [2007]]: Unable to retrieve destination column descriptions from the parameters of the SQL command.

Warning at {CF5DCB64-279E-45A4-A9A8-FF2FBB130980} [Insert Destination [1972]]: Cannot retrieve the column code page info from the OLE DB provider. If the component supports the "DefaultCodePage" property, the code page from that property will be used. Change the value of the property if the current string code page values are incorrect. If the component does not support the property, the code page from the component's locale ID will be used.



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ADDITIONAL INFORMATION:

Errors were encountered while generating the wizard results:
Error at Data Flow Task [OLE DB Command [1996]]: An OLE DB error has occurred. Error code: 0x80040E51.
An OLE DB record is available. Source: "Microsoft OLE DB Provider for Oracle" Hresult: 0x80040E51 Description: "Provider cannot derive parameter information and SetParameterInfo has not been called.".

Error at Data Flow Task [OLE DB Command [1996]]: Unable to retrieve destination column descriptions from the parameters of the SQL command.

Error at Data Flow Task [OLE DB Command 1 [2007]]: An OLE DB error has occurred. Error code: 0x80040E51.
An OLE DB record is available. Source: "Microsoft OLE DB Provider for Oracle" Hresult: 0x80040E51 Description: "Provider cannot derive parameter information and SetParameterInfo has not been called.".

Error at Data Flow Task [OLE DB Command 1 [2007]]: Unable to retrieve destination column descriptions from the parameters of the SQL command.



For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%u00ae+Visual+Studio%u00ae+2005&ProdVer=8.0.50727.42&EvtSrc=Microsoft.DataTransformationServices.Design.SR&EvtID=ScdWizardGenerationErrors&LinkId=20476

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BUTTONS:

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Slowly Changing Dimension Historical Attribute Causeing Same Row To Be Reinserted

Sep 29, 2006

I have a Slowly changing dimension that I am using to
populate a dimension table. My problem is this when I run the package and
any of the fields are marked as Historical Attributes it will add an additional
row regardless of the fact that the incoming data and the data in the warehouse
match exactly.



I've tried several things to fix this problem but so far none of them have
worked. Some of the things I have tried that haven€™t worked are to match
all the data types (which I have to do anyways) I've tried trimming the
strings, I've also tried adding just one column



I am using a data conversion to convert them from varchar (the source datatype)
to nvarchar(the warehouse datatype)



I'm at a dead end here and don't know where to go any help would be greatly appreciated.



Thanks

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