Migrating from Windows NT

 

If you have an earlier version of WebSphere MQ installed on a Windows NT machine, you will need to migrate the operating system to Windows 2000, Windows XP, or Windows 2003. Be aware that your current access control lists (ACLs) for your domain resources might become invalid.

On Windows NT, WebSphere MQ user account details are stored as security identifiers (SIDs) in your ACLs. When you migrate to a new Windows platform these SIDs are lost, invalidating the ACLs. This causes WebSphere MQ commands to fail, and you lose registry permissions and the WebSphere MQ Administration (mqm) security group.

You have the following options:

• To avoid losing WebSphere MQ user account access rights, remap the ACLs on your domain resources.

  Consult your operating system documentation on migration from Windows NT for details about how to remap the ACLs on your domain resources. You do not need to reinstall WebSphere MQ if you choose this option.

• If you do not want to remap your ACLs, and would like to start afresh, do the following:

  1. Uninstall WebSphere MQ from Windows NT.

  2. Migrate from Windows NT to your new Windows platform.

  3. Install WebSphere MQ on your new Windows platform.

  You must redefine your operating system user accounts and security groups as required, if you choose this option.

 

Parent topic:

Migration considerations