What is CMO(Current Management Object)

WLST online provides a variable, cmo, that represents the current management object. You can use this variable to perform any get, set, or invoke method on the management object. For example, the cmo variable enables the following command:

wls:/mydomain/edit> cmo.setAdministrationPort(9092)

The variable is available in all WLST hierarchies except custom and jndi.

WLST sets the value of cmo to the current WLST path. Each time you change directories, WLST resets the value of cmo to the current WLST path. For example, when you change to the serverRuntime hierarchy, cmo is set to ServerRuntime. When you change to the serverConfig hierarchy, cmo is set to DomainMBean. If you change to the Servers directory under DomainMBean, cmo is set to an instance of ServerMBean.

For Example:-

Changing the Current Management Object

C:\> java weblogic.WLST
Initializing WebLogic Scripting Tool (WLST) ...
Welcome to Weblogic Server Administration Scripting Shell
...
wls:/(offline)> connect('username','password')
Connecting to weblogic server instance running at t3://localhost:7001 as username weblogic ...
Successfully connected to Admin Server 'myserver' that belongs to domain 'mydomain'.
Warning: An insecure protocol was used to connect to the server.
To ensure on-the-wire security, the SSL port or Admin port should be used instead.
wls:/mydomain/serverConfig> cmo
[MBeanServerInvocationHandler]com.bea:Name=mydomain,Type=Domain
wls:/mydomain/serverConfig> cd('Servers')
wls:/mydomain/serverConfig/Servers> cmo
[MBeanServerInvocationHandler]com.bea:Name=mydomain,Type=Domain
wls:/mydomain/serverConfig/Servers> cd('myserver')
wls:/mydomain/serverConfig/Servers/myserver> cmo
[MBeanServerInvocationHandler]com.bea:Name=myserver,Type=Server