Verifying checksums of installed files

After installing the product or after installing maintenance packages, use the installation verification utility (IVU) to compute checksums of the installed file set to verify the checksum against the checksum in the product bill of materials.


Before you begin

Installing the product also installs the IVU, which is the installver command-line tool.

The installation verification utility is new as of the v6.2 level, which means that install Refresh Pack 2 for v6 of WAS Network Deployment for some operating system platforms, to install the IVU. Only a few operating system platforms were new as of v6.2 and thus, have their own installation disc at the v6.2 level. Refresh Pack 2 is required for all of the other platforms. See Installing V6.0.2 WebSphere Application Server for more information.


About this task

This topic describes using the installver command to compute a checksum on the installed files and compare the checksum to the product bill of materials.

You can also use the IVU to compute a new checksum for a system after you make significant configuration changes. The installver tool computes a new baseline checksum for each file in the inventory of a configured system to use to identify file changes in the later comparisons. Such a comparison is useful for detecting file tampering on the configured system, for example.

Although the most common use of the tool is to compare the product bill of materials to the installed file set after installation or after installing maintenance, other tasks are also possible.





When you are satisfied that your installed or updated file set matches the product bill of materials, you are finished installing and verifying the product or updating and verifying the product.

IBM Support has documents and tools that can save you time gathering information needed to resolve problems. If you detect a problem, before opening a problem report see if the problem is a known problem by checking the Support page:


What to do next

After verifying your installation, you can create profiles or deploy an application on an existing application server profile.

After installing, updating, and verifying, the next step is to use the product. If you created a stand-alone application server or a cell, start the application server, or the deployment manager, nodeagent, and federated application server, to use the administrative console to deploy an existing application. See Fast paths for WebSphere Application Server for more information.

If you have not yet created a cell profile, a deployment manager profile, or a stand-alone application server profile, go to Creating profiles through the graphical user interface to see how to create a profile.


See also

Verifying against the bill of materials
Computing a new baseline checksum for an inventory of configured files
Excluding files from a checksum comparison
Comparing specific file and component checksums
Changing the default message digest algorithm
Handling out-of-memory situations
Verifying the installver command
verifyinstallver command
installver command

Related concepts
Troubleshooting help from IBM Related tasks
Using the installation verification tools




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IBM is a trademark of the IBM Corporation in the United States, other countries, or both.