ZERO_DOWNTIME_UPGRADE

Systemwide variable that enables or disables a mode, which prepares the system for a version upgrade without system downtime.

Allowed values: Y and N
- Y: A database upgrade is allowed while the system is fully up and running. New CPs/WPs can be started for working in a compatibility mode, with their peers of a pre-installed version.
- N: Database upgrade not possible, if the system is running. All CPs/WPs must have the same version.
Default value: N

Important! During the period of time where this parameter is set to Y, the system performance will be reduced because certain system optimizations are not possible in this mode.