What is the apgcc schema in Amazon RDS Postgresql? Recently a mysterious new schema called apgcc appeared in every database in our testing Aurora Postgresql cluster (eu-west region). It is owned by the rdsadmin account. What is it, and where did it come from?



I am aware of a reference to apgcc in a launch announcement for Tokyo region. Twitter reveals that this has happened to others.
I received the answer from Kevin Jernigan of Amazon:


  A recent change in the Aurora PostgreSQL infrastructure made some internal schemas visible to customers. The “apgcc” schema is used for internal maintenance, and we are happy to drop it for you if it is causing an issue. We will address this in a future release.