In some situations you have to restart a WebLogic server many times to get something working. A quick and dirty way of restarting a server is to kill the process and let the Node Manager start it up again.
When you kill the process you will see this in the (more...)
The WebLogic server stores its configuration in files in the DOMAIN_HOME/config directory. The main file being config.xml.
The way configuration changes are handled depend on if you are using the domain configuration locking feature. In Production Mode configuration locking is enabled by default and in Development Mode it is (more...)
In previous versions of the WebLogic server an beahomelist file was created that contained the paths to the installations aka. the Middleware home’s.
cat beahomelist /u01/app/oracle/product/fmw;/u01/app/oracle/product/wls;/u01/app/oracle/product/adf;/u01/app/oracle/product/osb
When you deinstall a WebLogic server the path is not removed from beahomelist, but next time you install (more...)
Here one day before deadline, I have entered almost my entire current catalog of presentations for consideration in the Oracle OpenWorld 2013 agenda. One new for this year: “Worst Oracle ADF Project Ever”
If you would like me to speak at one of your events, the following are the presentations (more...)
Oracle has just announced a new Oracle Database Appliance, this time with WebLogic. So if you are looking to move to WebLogic and want a high availability environment, read on.
Like the previous editions of the Oracle Database Appliance, this is a physical 4-U rack mounted box that comes with (more...)
I recently had to find the size of the data stored in the HTTP Session State. On MOS I found this note:
“Session Replication Fails Due To Non-Serializable Object: JSP Test Page [ID 1073386.1]“.
It contains a JSP test page that will show you if your session data is (more...)
I recently had to upgrade a WebLogic Server with ADF for a customer. It was WebLogic 10.3.4 to 10.3.6 and ADF 18.104.22.168 to 22.214.171.124. They also used Enterprise Manager.
Everything went fine except for the Enterprise Manager which ended up (more...)
On Linux low entropy can cause certain operations to be very slow.
SSL operations need entropy to ensure randomness. Entropy is generated by the OS when you use the keyboard, the mouse or the disk.
If an SSL operation is missing entropy it will wait until enough is generated.
Year ago I installed Weblogic server + Oralce database server for a customer. Few months later my colleagues asked me whether something has changed in the environment or if something happened at the data center, because they started to see Java exceptions for unknown hostname for a web service they were calling and this was happening only from time to time. We’ve checked the firewall rules, DNS and all the stuff, but everything seemed to be working fine. The only solution by that time they came out was to add the hostname to the hosts file of the Weblogic server. (more...)
Our admin server of the osb development environment failed to restart because of a full disk.
After cleaning up the admin server still wouldn’t start resulting in the next stack.
<Sep 28, 2012 10:18:16 AM CEST> <Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: java.lang.NumberFormatException: null java.lang.NumberFormatException: (more...)