Start/notes.ini Parameters/Server_Session_Timeout

Server_Session_Timeout

Parameter: Server_Session_Timeout
Short description: Specifies after how many minutes of inactivity the server automatically terminates network and mobile connections.

Profile

Parameter
Server_Session_Timeout
Category
Performance / Memory
Available since
At least 9.0.1 (HCL documentation)
GUI equivalent
According to HCL no direct GUI option. Settable in the Configuration document on the NOTES.INI Settings tab.
HCL recommendation
30–45 minutes (minimum)

Description

According to HCL product documentation, Server_Session_Timeout defines the number of minutes of inactivity after which the server automatically terminates network and mobile connections.
Literally from the HCL docs: The minimum recommended setting is 30-45 minutes. Setting a smaller value can negatively impact server performance. The ideal setting depends on factors such as server load and the number of concurrent users on the server.
HCL adds for remote connections: For remote connections, XPC has its own internal time-out. If the XPC time-out value is shorter than the Server_Session_Timeout value, the XPC time-out takes precedence.
Default behavior (per HCL): There is no default entry. If the parameter is not set in notes.ini, Domino terminates sessions after 240 minutes (4 hours) of inactivity.

Example configuration

Server_Session_Timeout=30
The value 30 corresponds to the lower end of the HCL recommendation (30–45 minutes).

Notes & pitfalls

  • HCL explicitly warns against values that are too small (significantly below 30 minutes) — they can negatively impact server performance.
  • Without this parameter, Domino only ends sessions after 240 minutes — keeping unnecessary resources open.
  • For remote connections (XPC), the shorter of the two timeouts applies.
  • HCL note: direct dial-up modem support (X.PC) is only available in Domino versions before 8.5.

Sources (HCL Product Documentation)