The wlsdm update process is quite simple. wlsdm_agent.jar and wlsdm.war are replaced by new packages. The update steps are exactly as follows...

To get to the health state of a deployment, you can use the following code after connecting to the Adminserver over WLST

Node Manager can start a server without requiring you to specify startup options. However, if you have modified your environment; for example, if you have added classes to the WebLogic Server classpath, you must specify startup options before you use the Administration Console to start a server.

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.

Navigate as below for WebLogic active sessions monitoring.

Cron allows Linux and Unix users to run commands or scripts at a given date and time. You can schedule scripts to be executed periodically. The cron service runs in the background and constantly checks the /etc/crontab file, and /etc/cron.*/ directories. You can add new crontab defination using with “crontab -e” and list all jobs with “crontab -l”.

WL-OPC (WLSDM OPERATION CENTER) is the operation central and notification system which enables to manage application server infrastructure. You are going to able to manage, organize and visualize with WL-OPC; How to Create a Notification Actions ? WLSDM notifications can be managed from WL-OPC. Application, Datasource, JMS, Server and Domain’s health notifications can trigger the custom scripts. In this article about to restarting the server when the servers states are shutdown.