This task describes how to uninstall the product on a Windows platform.
Before you begin
Use the following procedure to remove all remnants of a WebSphere Application Server product. This produces a clean system that allows you to reinstall the product. Before you begin, verify that you are removing only the product instance that you intend to remove and not coexisting products, or products that you might have migrated and do not intend to delete. It is important to know the installation root directory for the product instance that you are removing.
Why and when to perform this task
Use this procedure to uninstall WebSphere Application Server products. Uninstall the products in the following sequence when you are uninstalling more than one product:
This procedure helps you to delete three items that completely remove the WebSphere Application Server product or feature: files, registry entries, and the MSI record (when you have installed the embedded messaging feature). If you are uninstalling in a coexistence environment, registry entries exist only for the installation image that you installed last.
If you are uninstalling any version but the last image that you installed, delete only the file structure for that installation image. You do not need to delete registry entries or the MSI record. If you are using the embedded messaging feature in other product instances on the machine, delete only the file structure for the installation image you are deleting. You do not need to delete the MSI record.
This procedure completely uninstalls the installation root directory for the product. References to the directory are abbreviated install_root in some of the steps.
Steps for this task
IBM WebSphere EMPS IBM WebSphere MQ
drive:\IBM\WebSphere MQ\WEMPS\bin\wempsdeletebroker.exe brokername -q
The -q option deletes the Broker's WebSphere MQ queue manager. For example:
drive:\IBM\WebSphere MQ\WEMPS\bin\wempsdeletebroker.exe WAS_nodename_server1 -q
drive:\IBM\WebSphere MQ\bin\dltmqm.exe queuemanagername
IBM WebSphere EMPS IBM WebSphere MQ
If you installed IBM WebSphere MQ as a separate product, do not remove it now. If you have other instances of WebSphere Application Server products on the same machine, and if they use the embedded messaging feature, do not remove the embedded messaging registry entries or directories.
The MQ Windows tray icon in the lower right corner indicates that a WebSphere MQ process (amqmtbrn.exe) is running. Remove the tray icon to close the process.
To remove the tray icon, right click the icon and click Hide.
If you are not using the embedded messaging feature or the WebSphere MQ product on other instances on the machine, remove any WebSphere Application Server product or feature that appears in the Add/Remove Programs panel, which is available from the Control Panel.
Handle the Registry with care: You can easily make a mistake while using the regedit.exe editor to view and edit registry contents. The editor does not warn you of editing errors, which can be extremely dangerous. A corrupt Registry can disrupt your system to the point where your only option is to reinstall the Windows operating system.
Delete the following keys:
If you have other instances of WebSphere Application Server products on the same machine, and if they use the embedded messaging feature, do not remove this embedded messaging registry entry.
When MSI starts, it lists all products that it knows about. To uninstall using this technique:
If you installed IBM WebSphere MQ as a separate product on this host to use as the messaging provider, and do not want to continue using WebSphere MQ, you can uninstall the product as described in the WebSphere MQ information.
Do not delete or rename the vpd.properties file because the InstallShield for MultiPlatforms (ISMP) program uses it for other products that it installs.
Results
When you finish, the product is completely uninstalled. You are now ready to reinstall. Reinstalling successfully into the same directory is the final indicator of success in removing the original product.What to do next
After uninstalling the product, see Installing WebSphere Application Server products to begin planning your next installation.