Reinstalling WebSphere Application Server with embedded messaging

If WebSphere Application Server embedded messaging is installed, some components of the product might not be uninstalled properly when the product is uninstalled, which can cause problems during reinstallation.

Before you begin

Before you uninstall the product, remove messaging objects such as queue connection factories and queue destinations from the configuration, using the administrative console page or the wsadmin command tool

If these objects are not removed prior to an uninstall, the messaging component detects that these objects still exist and, by design, will not uninstall itself. The file mq_uninstall.log will show messages similar to these:

Publish And Subscribe configuration exists>> - Not uninstalling Pub Sub
MQ Server configuration exists>> - not uninstalling MQ and MA88

Even if you see these messages, it might be possible to reinstall the product, including embedded messaging. The installation detects that the messaging component is already installed, and writes error messages to indicate this condition. It is recommended that you proceed with the installation. If the installation is successful, recreate messaging objects in the administrative console using different names for messaging objects from the prior installation. Further actions, such as manually uninstalling embedded messaging in the Windows control panel, or editing the Windows registry, are not recommended unless you tried a reinstallation and it cannot complete, or does not create a usable WebSphere Application Server.

Reinstalling when message components do not unistall completely

Even if all Java Messaging Service (JMS) resources, such as queue connection factories and queue destinations, are removed, or none are created, the messaging component still might not uninstall completely, which causes the reinstall of the product to fail. This failure is indicated by the following message in the mq_uninstall.log file: Return code from Publish And Subscribe uninstall was ERROR_INSTALL_FAILURE (1603)

The messaging component may be still resident and usable, and the recommended resolution is to first try reinstalling WebSphere Application Server with messaging, in the same location as before, ignoring messages indicating that messaging is already installed, and to proceed normally unless you encounter problems.

Note:

After installing the WebSphere Application Server product with the embedded messaging feature, you can install the WebSphere MQ product.

For instructions on installing a JMS provider, see Installing and configuring a JMS provider


Related tasks
Uninstalling embedded messaging
Troubleshooting by task: What are you trying to do?
Troubleshooting by component: What is not working?
Uninstalling the product
Related reference
Troubleshooting installation problems



Searchable topic ID:   rtrb_reinmsg
Last updated: Jun 21, 2007 4:55:42 PM CDT    WebSphere Application Server Network Deployment, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.websphere.nd.doc/info/ae/ae/rtrb_reinmsg.html

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