Concepts
VSys provides a dynamic listing of the people currently using the program. This tool is usually very accurate. VSys uses database record locks or semaphores to check the status of each user, so a crashed or disconnected machine's license will be released within a few minutes of the machine's disconnection from the database, even if it was not a controlled shutdown.
When to use this tool
Normally this tool is used to track how many licenses are in use for organizations which have purchased concurrent user licenses, but it's also helpful for finding out who's in VSys when maintenance or updates need to be performed.
To view who is currently logged in go to the Concurrent users monitor/who's logged in link on the Administrator tools panel. Click the Refresh link to update the list.
Only users in the current database using the same serial number are listed here. Mixing and matching, for example, evaluation serial numbers and purchased serial numbers will result in only seeing here the users who are using the same serial number as the logged-in user.