Account-level license unit limits let you prevent a particular account from using more licensing units than it should. You can view the total license units available through
Settings 
>
Admin >
License. See
Observe License Usage.
注: The overall license limits applicable at the Controller level are independent of any specific limits you apply at the account level.
Agent-based Licensing: For example, if an account is set up with a Java Agent limit of 100, you can ensure that the new account never interferes with the license availability of another account by setting the
Java Units Provisioned value for the account to a much smaller limit. However, if you set it to 100 and other accounts are also set to that amount, the first 100 agents that connect to the Controller would occupy those units, regardless of the accounts they report in to. Similarly, you can limit the lifespan of the account by setting an expiration date for the license.
Infrastructure-based Licensing: For example, if an account is set up with an Infrastructure Monitoring limit of 100, you can ensure that the new account never interferes with the license availability of another account by setting the
Infrastructure Monitoring value for the account to a much smaller limit. However, if you set it to 100 and other accounts are also set to that amount, the first servers with CPU cores totalling up to 100 would occupy those units, regardless of the accounts they report in to. Similarly, you can limit the lifespan of the account by setting an expiration date for the license.