Datasource monitoring is one of the key monitoring topics in weblogic based applications. We have been using simple WLST script to alert us when a datasource is not working properly. Most of the times, root cause will be a intermittent network/DB issue. To recover from the issue, we will reset/restart Continue Reading
osb
How to find the endpoint a java thread is reading from
We may experience performance problems due to stuck threads i.e., when the thread is not making any progress and just stuck. Typically this may be due to contention with other threads, waiting for an event or waiting for data to be arrived on a network connection. This blog post is Continue Reading
Weblogic Managed Server Start Hanging after Deployment
We have a 4 node test SOA/Weblogic cluster. After CI deployment, the pipeline automatically restarted SOA managed servers. But managed servers in all 4 nodes stuck in STARTING state. We faced similar startup issues earlier. So, revisited these pages: Issue 1, Issue 2, Issue 3, Issue 4, to check if Continue Reading
How to get weblogic password without using wlst
There is a simpler and quicker of getting weblogic password without using wlst script. But the caveat is that password should have already been present in boot.properties file. Start the application using strace and you can view the password in strace output file. Here is sample command: strace -s 400 Continue Reading
Weblogic server goes to FAILED_NOT_RESTARTABLE state
We have two node weblogic domain with SOA, OSB, ESS and WSM clusters. Server on one of the nodes was going to FAILED state and was not returning to RUNNING state even after multiple restarts. Logs have following messages: The error message was similar to one of the earlier issues Continue Reading
How to change Java heap settings in SOA/OSB 12.2.1.4.0
In 12.2.1.4.0, oracle came up with reference configuration. What it means is that by default soa/osb comes up with some tuning parameters e.g., JTA timeout values, datasource connections, Java heap settings Xms and Xmx. The default Xms and Xmx values are 4 GB for Admin server and 8 GB for Continue Reading