Refer to "Memory Capacity Requirements Using the Server Function of Application Server" in the Interstage Application Server Tuning Guide about the amount of memory required when operating the Systemwalker Single Sign-On Server.
The Systemwalker Single Sign-On Server uses the following functions:
Interstage operating environment
Interstage Management Console
Interstage HTTP Server
Interstage Single Sign-On (Authentication server function and Repository server function)
Interstage Directory Service
Interstage JMX Service