这个 2021 年 8 月的帖子里写的还是
Ampere A1 Compute instances are disabled when your trial ends and then deleted (terminated) after 30 days, unless you upgrade to a paid account. To continue using Always Free Arm-based compute instances as an Always Free user, you must delete your existing Ampere A1 Compute instances and create new Ampere A1 Compute instances.https://docs.oracle.com/en-us/iaas/Content/FreeTier/freetier.htm
If you have more Ampere A1 Compute instances provisioned than are available for an Always Free tenancy, all existing Ampere A1 Compute instances are disabled and then deleted after 30 days, unless you upgrade to a paid account. To continue using your existing Arm-based instances as an Always Free user, before your trial ends, ensure that you have no more than 4 OCPUs and 24 GB of memory in total across all the Ampere A1 Compute instances in your tenancy.