Uninstalling the earlier version

Uninstall the earlier version using the control panel. For a single-stage migration on Windows, uninstalling the earlier version of the product before installing the later version is optional.


Before starting

Before starting this task, we must first stop the queue managers, close IBM MQ Explorer and stop IBM MQ as described in Preparing to migrate.


In this task, you uninstall Version 9.1 using the Windows control panel. The queue manager data is not removed as part of the uninstallation process, which means that the sample queue managers used in this scenario are retained and can be detected when you install the newer version of the product.

Whether or not you have to uninstall the earlier version of the product before you install the later version depends upon your operating system. On Windows systems, uninstalling is optional and you could alternatively install the newer version without uninstalling the earlier one. Note that in this case, some of the options and messages that you would see during the installation would be different from those that appear when you have uninstalled the earlier version first. For more information about the platforms on which we must uninstall the earlier version before installing the newer version, see UNIX, Linux, and Windows: Single-stage migration from Version 7.0.1, or later, to the latest version.


Procedure

  1. Open the Windows Control Panel by clicking Start > Control Panel > Uninstall a program.
  2. In the Programs and Features window, find the entry for the installation that we want to remove, for example IBM WebSphere MQ (Installation1), and click Uninstall. The uninstallation process begins and runs to completion. When the process completes, Version 9.1 is removed from your computer and is no longer displayed in the list of programs.


Results

Version 9.1 has been removed from your computer. However the queue manager data has not been removed.


What to do next

You are now ready to install IBM MQ Version 9.2 as described in Installing IBM MQ Version 9.2 using the launchpad.

Parent topic: Option 1: Single-stage migration Previous topic: Preparing to migrate Next topic: Installing IBM MQ Version 9.2 using the launchpad


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