WebLogic Admin Tricks & Tips

We were in the developing a orchestration application platform which requires multiple JMS Messaging bridges. We have configured near 10 Bridges to different external systems. When maanaged servers each one host a bridge it will be doubles the count that we cannot monitor on single screen in the  admin console. On the Weblogic Admin Console we can monitor the Bridge status using Bridges -> Monitoring tab.For testing we had started single managed server and checked the Bridge monitoring status.  It could be either 'Forwarding Messages' or 'Fail to connect Source' or 'Fail to connect to Target'. The actual tragedy starts when it comes to production environment, where we have multiple managedservers in the cluster. Usually Bridges status matters when it connects to third party messaging providers such as MQ Series or something else. Assume that, there are 10 Bridges deployed to 10 managed servers on the WebLogic Console becomes very slow when you use 'Mo...

Hey dear WLA most of us come from Development environment to production environments. Hope the scienario thatI am going to discuss here is a common to everyone, who is working on development environment. Sometime or other you might felt I should have a handy script that could takes input as a WebLogic instance port which usually get from the applicaiton URL. The WebLogic port and list all the Process IDs which are associated with it on UNIX(here I got solution for Solaris) environment. Recently I found a Sun blog which is clearly discussed similar issue. I am re-compiling the same with customizing to our WebLogic Listen Port, WebLogic Server runs with a Java generated child Process ID. 'lsof' is the command you can execute and get this solved but most of the times it is a Sun third party downloads, that is not allowed in many Banking, Financial and Insurance Service organizations. And one more reason is small companies doesn't efford for third party tools. Then, Your cho...

Today I started re-inventing myself, started looking what all I did for me and my team to perform in better ways. Remembered those we used to open UNIX SSH windows to monitor How the CPU load average in each site. While doing this monitoring activity on site1, there might be possible that some other site reach to overload, which leads to uncontrol tendency to work. It was funny, my dear buddy named it as 'Barbar work!!' :) After little R & D on Google/Internet found few suitable solutions. I had chosen 'uptime' command running with remote SSH connection in a loop. Adding more value to this sending a mail on the event of crossing the threshold value. This threshold will be vary depending upon the application and CPU power. Trail and error make you to identify what could be the threshold. Defining these threshold values Venu GopalRao helped a lot. Once script started working he was amazed and appreciated as well. This script can be run forever with a specified ti...

The Oracle WebLogic Server instances are nothing but each one running on a single JVM, when this JVM crashes there could be one of the reasons as overworking of Garbage Collection or not working at all (waiting continuously).   It is good practice that monitoring GC in JVM with detailed statistics will give you a clear idea to analysis at what circumstances happening wrong. And the best way to look in deeper levels of garbage collection also like Young Generation (Eden space, Survivor spaces S0, S1) Old Generation (tenured Generation), and Perm Generation (Statistic Objects/Classes). JDK 1.5 and latest providing excellent JDK command utilities for interrogate the current running Java Process and look inside of JVM take snap with following: 1. jps (Java Process) 2. jstat (JVM status) The 'jps' command with -lv options gives you complete detailed java process arguments for MEM settings and relavent WebLogic Server instances name. We have already discussed about this command ...