This improves consequent database startup times as it is always 'faster' to process from buffers in shared memory than have to read from disk. One of the reasons this parameter was introduced is related to additional changes to the shutdown routine, where the database manager tries to assure closed transactions before shutdown.Since OpenEdge 10.2B shutdown improvements introduced the -shutdownTimeout parameter, to limit the time period the PROSHUT process will wait for the database activity to end. What happens during PROSHUT -by and PROSHUT -F?.For further detail on the differences between a normal and an emergency shutdown, refer to Article: Additionally, an interactive client's session itself will therefore still be open but no longer connected. This is why the "Logout" message in the database lg file is posted before the user control is then removed from shared memory. It disconnects connected users from shared memory after cleaning anything related to their connected context at the time. It is important to clarify the database manager never "logs out' users, only user sessions can "Logout".
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