Operation Modes NIGHT Background processing Dialog processing DAY BTC 12 9 6 3 11 1 7 5 8 4 2 10 Dialog processing 12 9 6 3 11 1 7 5 8 4 2 10 BTC DAY Typically, customers require more dialog processes during the day and more background processes during the night. To adjust the proportions of the various R/3 work processes to suit different phases of system activity, you can: Maintain the instance profile and restart the system (for unusual changes) Define operation modes and use the operation mode switch (for daily changes) Operation modes optimize system resources for different phases of system activity. Operation mode switching reconfigures your R/3 System dynamically, so you do not need to change the instance profiles for your server and you experience no system downtime. An operation mode configures the use of resources for all the instances in your R/3 System based on: The services or work processes you need The time interval you choose