Removing maintenance level server updates on Windows

You can remove updates and revert to the previous maintenance level of IBM® MQ by using the Windows installer.

1. Log on as an Administrator.
2. Stop all applications using the IBM MQ installation.

   If you use the Managed File Transfer (MFT) component, ensure that any MFT agents have finished all of the file transfers that they were engaged in. There should be no incomplete transfers associated with the agents, and their SYSTEM.FTE.STATE queues should contain no messages.

3. End all the activity of queue managers associated with the IBM MQ installation.
   1. Run the dspmq command to list the state of all the queue managers on the system.

      Run either of the following commands from the installation that you are updating:

      
      dspmq -o installation -o status
      dspmq -a
      

      dspmq -o installation -o status displays the installation name and status of queue managers associated with all installations of IBM MQ.

      dspmq -a displays the status of active queue managers associated with the installation from which the command is run.

   2. Use the MQSC command DISPLAY LSSTATUS to list the status of listeners associated with a queue manager, as shown in the following example:

      
      echo DISPLAY LSSTATUS(*) STATUS | runmqsc QmgrName
      

   3. Run the endmqm command to stop each running queue manager associated with this installation.
      

      The endmqm command informs an application that the queue manager it is connected to is stopping; see Stopping a queue manager.

      For the maintenance to proceed, applications must respond to an endmqm command by disconnecting from the queue manager and releasing any IBM MQ libraries they have loaded. If they do not, you must find another way to force applications to release IBM MQ resources, such as by stopping the applications.

      You must also stop applications that are using the client libraries that are part of the installation. Client applications might be connected to a different queue manager, running a different installation of IBM MQ. The application is not informed about queue managers in the current installation being shut down.

      Any applications that continue to have IBM MQ shared libraries from the installation loaded prevent you applying IBM MQ maintenance. An application might disconnect from a queue manager, or be forcibly disconnected, but keep an IBM MQ shared library loaded.

      Note: Applying maintenance level updates to multi-instance queue managers on UNIX and Linux describes how to apply maintenance to a multi-instance queue manager. A multi-instance queue manager can continue to run on one server, while maintenance is applied to another server.
   4. Stop any listeners associated with the queue managers, using the command:

      
      endmqlsr -m QMgrName
      

4. Stop the IBM MQ service for the installation.
   1. Right-click the IBM MQ icon in the taskbar > click Stop IBM MQ.
5. Remove the maintenance interactively, or silently using a command.
   • Interactively:
     1. For each installation of IBM MQ that has had maintenance applied, you are presented with one of the following icons in the Windows start menu:
        1. Start > Programs > IBM MQ > Remove Refresh Pack V.R.M.L (installation_name)
        2. Start > Programs > IBM MQ > Remove Fix Pack V.R.M.L (installation name)
           where

           • V is the version number
           • R is the release number
           • M is the modification number
           • L is the level of modification
     2. Select the installation you want to maintain and click Remove to start the process.
     This returns the installation to the state it was in before the maintenance package was applied.
   • Silently:
     1. Open an elevated command prompt and enter the following command:

        
        amqicsdn.exe MQPINSTALLATIONNAME= name MQPUNINST=1 MQPSILENT=1
        

        where name is the name of the installation that you want to remove maintenance from.
        You can add other properties to the command, as listed in Table 1.

        Table 1. Properties used to install or uninstall a maintenance update

        Property	Value	Description
        MQPLOG	path\file_name	Pass a valid path to specify the log to be used during installation/uninstallation, for example MQPLOG=C:\TEMP\UPDATEINSTALL.LOG If MQPLOG is not specified (which is the case if you start maintenance by clicking the Apply fix pack n.n.n.n icon in the IBM MQ program group) the log name used by default will be amqicsdn.txt in your TEMP directory ( %TEMP% ).
        MQPINSTALLATIONNAME	Installation name	The name of the installation to maintain. If there is only one installation (of any level) on the machine, this argument can be safely omitted. If there is more than one installation on the machine, amqicsdn.exe checks the value of MQPINSTALLATIONNAME. If one is not supplied, or the one that is supplied is unsuitable, then a GUI selection box appears. This selection box provides a list of installations to which this fix pack is applicable. If none is applicable, then amqicsdn.exe issues error message AMQ4781 and ends.
        MQPBACKUPPATH	path	Specifies the directory to back up into during installation, for example MQPBACKUPPATH=C:\BACKUP The directory, and any intermediate directories, you specify must already exist. If any one of the directories does not already exist, the installation fails.
        MQPREBOOT	0|1	Specifies what to do when a reboot is required, for example MQPREBOOT=1. If no value is supplied, you are prompted for what to do next. If MQPREBOOT is set to 0, a reboot is suppressed If MQPREBOOT is set to 1, the reboots go ahead without prompting.
        MQPINUSEOK	0|1	Specifies whether to continue even if a file is found to be currently locked by another application. If you choose to continue even if a file is locked by another application, then you must reboot to complete fix pack installation. If no value is supplied, or if MQPINUSEOK is set to 0, the installation fails if files are found to be in use by other applications. If MQPINUSEOK is set to 1, the installation is deferred until you reboot.

6. Optional: If you no longer need the maintenance files that were loaded onto the system before maintenance was applied, you can remove them using Add/Remove programs or Programs and Features from the Control Panel.
   If you want to remove a maintenance file silently, run the following command:

   
   patch_install_files\_IBM MQ (fix pack V.R.M.L files)_installation\Change IBM MQ 
   (fix pack V.R.M.L files) Installation.exe" -i silent
   

   where patch_install_files is the installation directory where maintenance files are installed.

   By default, this directory is C:\Program Files (x86)\IBM\source\WebSphere MQ V.R.M.L

   Notes:

   1. Run the command from outside the directory, otherwise the directory is not removed.
   2. If you omit -i silent, the command initiates the Graphical User Interface installer.