vmcj/enable is a SAP Parameter attribute which is used to control enable vm container information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
You can use the parameter vmcj/enable to activate the Virtual Machine
Container (VMC).
Following values are possible:
off: The VMC is not initialized. enable: The VMC is initialized, but not
yet started. This means that you can activate the VMC later.
activate/on: The VMC is initialized and activated.
If you activated the VMC, you should set up either a dynamic process or
a reserved process (parameters rdisp/wp_no_dynamic and
See SAP Parameter Documentation for full SAP documentation for this profile parameter.