Archive for April, 2012

How to find Weblogic patches in Oracle Support site?

April 25, 2012 Leave a comment

After the Oracle’s aquisition of BEA all Weblogic server legacy patches have been included in the new My Oracle Support site, Oracle’s former Metalink. Due to this change, all Weblogic patches are now identified by a patch number of 7 digits (e.g. Patch 8206442). However, there are many resources out there such as blogs or even notes in the Oracle support site that still refer to the Weblogic patches by the old identification code, formed of 4 alpha numeric characters (e.g. Patch PKJ1)

To locate and download these patches from the MOS site ( or you need to:

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Unable to start Weblogic: PasswordEncrypted of ServerStartMBean

April 25, 2012 Leave a comment

The Weblogic administration server is not starting and the complete error message is:

“In production mode, it’s not allowed to set a clear text value to the property: PasswordEncrypted of ServerStartMBean”

If this is occurring in Weblogic versions 10.3.1 or earlier, then it is a known bug with the administration console. The bug will cause a <password-encrypted> tag of a certain weblogic instance in your domain to be set to a null value in the config.xml. This will happen if you modify some startup arguments of that instance in the administration console. Weblogic will interpret the null value as a plain text password, which is not allowed in a production domain, thus the error in starting the server.

There is a patch that you can apply for this issue, but there are also some quick workarounds that might prove very useful if there is a time constraint for starting the administration service.

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Installing and configuring Oracle Traffic Director 11g

April 3, 2012 Leave a comment

Oracle Traffic Director is a new product with Proxy and Load Balancing functionalities used for fronting Fusion Middleware servers. It is a lightweight, high performance proxy server taking only 150Mb of disk space, with extensive High Availability features. You can find more on the OTD’s features in this Oracle Traffic Director white paper.

OTD is currently released only for the Exalogic platform, so for operating systems other than OEL 64bit you will still have to use the Weblogic plugin for web servers, but OTD will be available for all platforms in the future.

This post will describe the installation and a basic configuration fronting a Weblogic cluster:

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