You can lose communication sessions because your network times out. These time-outs usually occur on the client side of a session. The primary reason for time-outs is that iFIX network tasks on the SCADA server or iClient did not get enough CPU time to service a request.
NOTE: Network sessions may be lost when you open large pictures. iFIX re-establishes the session after the picture finishes opening. To eliminate this problem, use the information in the section Working with Configurable Session Timers.
The following factors prevent the network task on the SCADA server or iClient from getting enough CPU time:
- Heavy disk activity.
- Large picture calculation time.
- SAC running to completion when database overruns occur.
- Database Manager sorting.
- Other applications, such as iFIX WorkSpace and Database Manager, taking time-slices before data can be processed.
