I currently have the Always Free Oracle instance (Standard.A1.Flex), but I heard that it gets claimed again by Oracle when it is not actively used anymore (https://docs.oracle.com/en-us/iaas/Content/FreeTier/freetier_topic-Always_Free_Resources.htm):

Reclamation of Idle Compute Instances: Idle Always Free compute instances may be reclaimed by Oracle. Oracle will deem virtual machine and bare metal compute instances as idle if, during a 7-day period, the following are true:

• CPU utilization for the 95th percentile is less than 15%
• Network utilization is less than 15%
• Memory utilization is less than 15% (applies to A1 shapes only)

What do you do to keep it actively used?