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WLSDM for WebLogic

Uygulama performans izleme ve kurumsal Java dünyasında önemli çalışmalar yürüten Volthread, WLSDM ile global ölçekte Oracle müşterilerine çözüm üretiyor. Oracle Türkiye’de yayınlanan başarı hikayesine yenilerini eklemek için ekip olarak yoğun mesai harcıyoruz.

Volthread Teknoloji, www.volthread.com.tr

“Ar-Ge faaliyetlerini Türkiye’de gerçekleştirdiğimiz Oracle Orta Katman izleme ürünümüz WLSDM ile 2015'ten beri toplam 15 ülkede Oracle müşterilerine, sistemlerini 360 derece ölçümleyip izleyebilecekleri çözümler sağlıyoruz.”

Volthread Kurucu Ortak ve CTO’su M. Fevzi Korkutata

Volthread 2015 yılında hayata geçirdiği Oracle Orta Katman izleme yazılım ürünü WLSDM ile Oracle’ın global ekosistemine katma değer çözümler üretiyor. …


SNMP Trap Notifications (Health, State, JMX Metric)

SNMP Notification feature has easy SNMP trap configuration:

  • SNMP Trap for WebLogic State and Health (Servers, Deployments, Data Sources and JMS)
  • SNMP Trap MBean Metric Values
  • SNMP Trap for WebLogic Server Logs

How to Stuck Thread Occurs?
A Stuck Thread is a thread which is processing a request for more than maximum time that you configured in WebLogic admin console. By Default, the WebLogic server comes with 600 secs. If some thread doesn’t return in 600 secs, It gets a flag ‘stuck thread’.

How to deal with Stuck Thread?
Take thread dumps instantly.
Open thread dumps in visualVM. Analyze dashboard from WebLogic console (managed server > monitoring > threads).
Open thread dump files in “WLSDM Menu > Monitoring & Diagnostics > Profiling Dumps”.

Monitoring Thread Dump

See how many threads got stuck…


Author: Govindan Padmanaban
Website: www.catgovind.com
Original Post: http://www.catgovind.com/weblogic/about-smart-weblogic-server-monitoring-and-diagnostic-tool-wlsdm/

I have been working on WebLogic server for more than 9 years. Often, I monitor server log files, Server status, Testing Data source connections, JMS servers, deployed application status, CPU/Memory usage and much more. If any of these objects got down or broken, then the associated deployed application will get into trouble. For example, a web application dependent will go down if the associated Data source (DB Connection) goes down, or a deployed application give a poor response if the CPU/MEMORY is full.

Many times I thought, what if a tool available…


Performance metrics are standing in WLSDM menu’s “JVM System Resources” tab. Users can add or delete to metric; dashboard, action;

configure alarm, store data or delete metric.

JVM System Resources


Previous on WLSDM blog, we have learned about WebLogic JMS infrastructure. In this tech blog post, let’s learn how to monitor WebLogic Java Virtual Machine (~Managed Server) resources and diagnose performance bottlenecks.

Weak JVM performance affects WebLogic domain performance directly. That’s why the host’s CPU and memory usage is very important in terms of improving WebLogic performance. Higher CPU consumption and Garbage Collection duration can cause applications to run slowly, even cause the WebLogic servers facing downtime. JVM instances in a WebLogic need to be monitored constantly and notification/alarm infrastructure must be installed as well. …


Company signature and logo can be added to HTML email notifications. Enjoy your WebLogic system and keep performance up

To change email subject or header text;

Go to the Configuration > WLSDM System Settings page and click on mail.content tab.


Getting a server disk usage alert must be followed some manual delete or move actions on a WebLogic machine.

At the end of post, there would be a youtube screencast tutorial about scheduling WebLogic jobs and automating scripts.

Check below screen capture about WebLogic Alerts and DiskSpace Watcher Email Alert.

Modern HTML Email Delivery

HTML Email Delivery:

Screencast Tutorial:
How to use WLSDM Disk Usage Dashboard (Disk Space Watcher)?


There are a lot of classic routines while administrating and managing Oracle WebLogic domains. Such as;

1) Could you please send me the WebLogic and/or application LOG files?
2) Could you please upload these files to the server(s)?
3) Could you please send me the “X” files on the server?
4) Could you please tell me what is current value in this file?

Mostly developers and administrators require these jobs to be done while working on Oracle WebLogic Server environments.

WLSDM has two important modules while managing these requests. …


If there is a lot of WebLogic domains you need to manage, use WebLogic “Domain JVM Argument Manager” for standardizing your JVM arguments.

Manage multiple WebLogic domains by Managed Server JVM arguments with WL-OPC visualized UI. Append, Remove, Update, Find and Replace, Replace All bulk operations are available.

APPEND: Appends or adds new single/multiple JVM argument(s) and locates them at the end of the existing argument line

Adding Single: -Djava.security.egd=file:/dev/./urandom

Adds -Djava.security.egd=file:/dev/./urandom JVM argument to the end of existing argument line for the selected WebLogic domain(s) and managed server(s).

Adding Multiple: -javaagent:/u01/oracle/middleware/user_projects/domains/${domainName}/wlsdm_agent/wlsdm_agent.jar -Dwlsdm.agent.logLevel=INFO -Dwlsdm.agent.extendedBackendMonitoringEnabled=true -XX:+UnlockCommercialFeatures -XX:+FlightRecorder -XX:FlightRecorderOptions=repository=WLSDM/temp/JFR -XX:+DisableExplicitGC

REMOVE: Removes…

WLSDM for WebLogic

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