Error "(oscar_oom.cc:1210)" repeating in logs

We have the same issue affecting a db.t2.small instance.

Bump. I have just pulled 1.7MB mysql-error-running.log and it is 3500 lines with just this text in each line...

Exactly the same thing happening here on a db.t3.small. Can't find any information anywhere to explain what it might be.

Check your freeable memory stats. I think this is an OOM (Out of memory) error

Did anyone find a solution for this?

Also seeing this with db.t3.small . Not yet find the right way to reduce memory in a way that fixes this.

Hello, I was having the same issue with a mysql db.t3.small database. I was using a pooled connection with 20 concurrent connections which was taking to much memory. I was also having some oom and some login failures when the OOM was happening. By lowering to 10 concurrent connections, the issue is fixed. Hope it helps :)

Im also using db.t3.small for my dev environment, on mysql engine starts I see warning about memory is low, before establishing any connections. The db is still working fine thou.

[Note] /rdsdbbin/oscar/bin/mysqld: ready for connections.
Version: '5.7.12'  socket: '/tmp/mysql.sock'  port: 3306  MySQL Community Server (GPL)
Available memory is low. Trying to avoid OOM crash:  system KB: 1970520  available KB: 80036  low-threshold KB: 98526  print victim: yes  decline query: no  tune caches: yes  kill query: no  kill connection: no
 (oscar_oom.cc:1210)
 (oscar_oom.cc:1210)
 (oscar_oom.cc:1210)
....