Upgrading Integration Services Packages
When you upgrade an instance of SQL Server 2005 to SQL Server 2008, your existing SQL Server 2005 Integration Services (SSIS) packages are not automatically upgraded to the package format that SQL Server 2008 Integration Services (SSIS) uses. You will have to select an upgrade method and manually upgrade your SQL Server 2005 packages.
When you upgrade a SQL Server 2005 package, Integration Services migrates the scripts in any Script task and Script component to Microsoft Visual Studio Tools for Applications (VSTA). In SQL Server 2005, the scripts in Script tasks or Script components used Microsoft Visual Studio for Applications (VSA). For more information about changes that you might have to make to the scripts before migration and about script conversion failure, see Migrating Scripts to VSTA.
Selecting an Upgrade Method
You can use various methods to upgrade SQL Server 2005 packages. For some of these methods, the upgrade is only temporary. For others, the upgrade is permanent. The following table describes each of these methods and whether the upgrade is temporary or permanent.
Upgrade Method |
Type of Upgrade |
|---|---|
Use the dtexec utility (dtexec.exe) that is installed with SQL Server 2008 to run a SQL Server 2005 package. For more information, see dtexec Utility. |
The package upgrade and script migration are temporary. The changes cannot be saved. |
Open a SQL Server 2005 package file in Business Intelligence Development Studio. |
The package upgrade and script migration are permanent if you save the package; otherwise, it is temporary if you do not save the package. |
Add a SQL Server 2005 package to an existing project in Business Intelligence Development Studio |
The package upgrade and the script migration are permanent. |
Use the SSIS Package Upgrade Wizard to create or open a SQL Server 2005 Integration Services project, and upgrade multiple packages in the project. For more information, see How to: Upgrade Integration Services Packages Using the SSIS Package Upgrade Wizard and SSIS Package Upgrade Wizard F1 Help. |
The package upgrade and script migration are permanent. |
Use the Upgrade method to upgrade one or more Integration Services packages. |
The package upgrade and script migration are permanent. |
Understanding Package Upgrade Results
During the package upgrade process, most components and features in SQL Server 2005 packages convert seamlessly to their counterparts in SQL Server 2008. However, there are several component and features that either will not be upgraded or have upgrade results of which you should be aware. The following table identifies these components and features.
注意
To identify which packages have the issues listed in this table, run Upgrade Advisor. For more information, see Using Upgrade Advisor to Prepare for Upgrades.
Component or Feature |
Upgrade Results |
|---|---|
Connection strings |
The names of certain providers have changed in SQL Server 2008 and require different values in the connection strings. To update the connection strings, use one of the following procedures:
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You cannot use the previous procedures to update a connection string when the connection string is stored in either a configuration file or a data source file, or when an expression sets the ConnectionString property. To update the connection string in these cases, you must manually update the file or the expression. For more information about data sources, see Using Data Sources in Packages.
|
Lookup transformation |
The package upgrade process automatically upgrades the Lookup transformation to the SQL Server 2008 version. However, the SQL Server 2008 version of this component has some additional capabilities of which you might want to take advantage. For more information, see Lookup Transformation. |
Script task and Script component |
The package upgrade process automatically migrates scripts in the Script task and Script component from VSA to VSTA. For more information about changes that you might have to make to the scripts before migration and about script conversion failure, see Migrating Scripts to VSTA. |
Third-party and custom components |
These components will not be upgraded. You must manually recompile these components to enable them to work with SQL Server 2008 Integration Services. |
Change History
Updated content |
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Corrected the descriptions for the upgrade methods of opening a package file and adding a package to an existing project. |