Resource plans in GBase 8a (e.g., plan_day , plan_night ) are not directly bound to time and do not support cron expressions . Their automated switching relies entirely on external schedulers — such as Linux crontab — that execute ACTIVE / DEACTIVE commands at the right moment. Core Mechanism: External Trigger, Internal Execution A resource plan is just a "policy container" — it takes effect only when activated ( ACTIVE ). GBase 8a has no built‑in timer, so the full automation chain is: External scheduler (crontab, etc.) fires at the scheduled time. A script connects to the database and runs the ACTIVE / DEACTIVE RESOURCE PLAN command. The plan swap takes effect.…