Multiple RStudio Pro Sessions
Posit Workbench enables users to have multiple concurrent RStudio Pro Sessions on a single server or load balanced cluster of servers (the open-source version of RStudio Server supports only a single session at a time).
Creating New Sessions
You can start a new RStudio Pro Session using the New Session command from the Session menu (or the corresponding toolbar button near the top-right of the IDE).
You can also open an existing RStudio project in a new RStudio Pro Session by using the Open Project in New Session command. When switching projects there is also a button on the right side of the projects menu that lets you specify that the project should be opened in a new session rather than within the current one.
You can review all currently running sessions and switch between them using the Sessions toolbar near the top-right of the IDE.
Session Lifetimes
RStudio Pro Sessions are long-running tasks that continue to be available until you explicitly quit them (you can think of them as you’d think of multiple top-level RStudio windows running on the desktop). This means that you can kickoff a long running job in one session and then switch to another session, revisiting the original session later to check on it’s progress. As is also possible on the desktop, you can navigate between different projects and working directories within a session.
Sessions will suspend automatically when they are idle and then be automatically resumed next time they are accessed. To permanently quit a session you can use the Quit Session command located on the File menu or the corresponding toolbar button at the top right of the IDE.
Disabling Multiple Sessions
If you wish disable support for multiple sessions you can use the server-multiple-sessions option. For example:
/etc/rstudio/rserver.conf
server-multiple-sessions=0