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This task provides steps for removing DB2 Version 8 products using the  db2_deinstall  command. The  db2_deinstall  command removes all DB2 products from your system. If you want to remove a subset of DB2 products, use your operating system's native tools to remove DB2 components, packages, or file sets. Prerequisites Before you remove DB2 products from your UNIX system: Ensure that you have performed all steps outlined in  Removing DB2 on UNIX  before removing DB2 products from your UNIX system. You must have root authority to remove DB2 products. You will need your product CD-ROM to use the  db2_deinstall  command. The  db2_deinstall  command is found in the root directory on the DB2 Version 8 product CD-ROM. Procedure To remove DB2 products from your UNIX system: Log in as user with root authority. Mount the DB2 Version 8 product CD-ROM. Run the  db2_deinstall -n  command from the root directory of your DB2 Version 8 product CD-ROM. The  -n  parameter makes pkgr

If you want to migrate to WebSphere MQ Version 7.0, complete this task. If you migrate from a previous level of this product  without first backing up your system , you  cannot revert to your previous level, so back up your system  before  you install WebSphere MQ Version 7.0. You can then back out the upgrade if necessary. If you back out the upgrade, however, you cannot recover any work,  such as changes to messages and objects,  performed by WebSphere MQ Version 7.0. Procedure Stop all MQ applications on the machine and the applications accessing remote machines. End all WebSphere MQ activity. Log in as a user in  group mqm . Use the  dspmq  command to display the state of all the queue managers on the system. Use the  endmqm  command to stop all running queue managers. Stop any listeners associated with the queue managers, using the command: endmqlsr -m QMgrName To check that you have stopped all of them, enter the following: ps -ef | grep mq Check that there a

You have added a channel authentication record into a WebSphere MQ 7.1 queue manager: DISPLAY CHLAUTH(*) TYPE(USERMAP) 1 : DISPLAY CHLAUTH(*) TYPE(USERMAP) AMQ8878: Display channel authentication record details. CHLAUTH(*) TYPE(USERMAP) CLNTUSER(rivera) USERSRC(CHANNEL) Now you want to remove it and you try executing the following runmqsc command which you constructed using copy and paste from the above output: DELETE CHLAUTH(*) TYPE(USERMAP) CLNTUSER(rivera) USERSRC(CHANNEL) 3 : DELETE CHLAUTH(*) TYPE(USERMAP) CLNTUSER(rivera) USERSRC(CHANNEL) You get the following error: AMQ8405: Syntax error detected at or near end of command segment below:- DELETE CHLAUTH The DELETE CHLAUTH does not exist and after consulting the MQ 7.1 Information Center you read that you have to use the SET CHLAUTH command with the argument ACTION(REMOVE). You try now: SET CHLAUTH(*) TYPE(USERMAP) CLNTUSER(rivera) ACTION(REMOVE) 19 : SET CHLAUTH(*) TYPE(USERMAP) CLNTUSER(rivera) ACTION(REM

Procedure Before starting to uninstall, end all  WebSphere MQ  activity. Log in as a user in group mqm. Use the  dspmq  command to display the state of all the queue managers on the system. Use the  endmqm  command to stop all running queue managers. Stop any listeners associated with the queue managers, using the command: endmqlsr -m QMgrName To check that you have stopped all of the necessary  WebSphere MQ  processes, type: ps -ef | grep mq Check that there are no processes listed that are running command lines beginning  amq  or runmq . Ignore any that start with  amqi . Before you uninstall  WebSphere MQ  for  Linux  you must find out the names of the packages (components) currently installed on your system. To list all the packages with their version information, enter the following: rpm -q -a | grep MQSeries rpm -q -a | grep gsk Note:  If you have applied maintenance to the install, remove these maintenance packages before removing the base install. Some

Uninstalling  WebSphere MQ  on  AIX On  AIX , you can uninstall the WebSphere MQ  server or client using the System Management Interface Tool (SMIT) or the  installp  command. Before you begin If any updates have been applied, remove them before starting this uninstallation procedure. For more information, see AIX: Restoring the previous maintenance level on WebSphere MQ version 7.1. Procedure Stop all  WebSphere MQ  applications associated with the installation you are uninstalling. For a server installation, end any  WebSphere MQ  activity associated with the installation you are uninstalling: Log in as a user in the group  mqm . Set up your environment to work with the installation you want to uninstall. Enter the following command: . MQ_INSTALLATION_PATH /bin/setmqenv where  MQ_INSTALLATION_PATH  refers to the location where  WebSphere MQ  is installed. Display the state of all queue managers on the system. Enter the following command: dspmq -o installatio

Removing IBM Websphere broker services on AIX, Linux, Solaris In some situations, you may want to remove broker services from a server where you install IBM® WebSphere® MQ and WebSphere Event Broker. Removing broker services involves deleting the queue manager, the configuration manager, the broker itself, and the database tables used for storing associated information. Before you begin There are several situations in which you may want to remove the broker services from a Linux® deployment; for example: When you want to replace the WebSphere Event Broker configuration (possibly to use different ports for the listeners) When you are uninstalling WebSphere MQ and WebSphere Event Broker, and you want to be sure you are leaving a clean configuration Procedure Log on to the server hosting WebSphere MQ and WebSphere Event Broker as  root . Remove the broker services as follows: Open the Message Broker Command Console.. Navigate to the directory where you install

Procedure Stop all MQ applications on the machine and the applications accessing remote machines. End all WebSphere MQ activity. Log in as a user in group mqm . Use the dspmq command to display the state of all the queue managers on the system. Use the endmqm command to stop all running queue managers. Stop any listeners associated with the queue managers, using the command: endmqlsr -m QMgrName To check that you have stopped all of them, enter the following: ps -ef | grep mq Check that there are no processes listed that are running command lines beginning amq or runmq . Ignore any that start with amqi . Log in as root. Function supplied by the SupportPacs in Table 1 has been superseded by function in WebSphere MQ Version 7.0. Remove these SupportPacs before installing WebSphere MQ Version 7.0. Table 1. SupportPacs superseded by WebSphere MQ Version 7.0 SupportPac Number Description MA0Y WebSphere MQ Bridge for HTTP Note: If you installed Supp