After upgrading vCSA to 5.5U3, performance stats work for a few minutes and then stop for most guests. The following error is logged for the affected host:
Stats insertion failed for entity <hostname> due to ODBC error.
This also happens with a clean vCSA setup and clean ESXi 5.5U3a system with 100+ guests added. I can't reproduce this with an ESXi 5.5U3a host with only a few guests.
Rolling back vCSA to 5.5U2e resolves the problem.
Does anyone know how to fix this in vCSA 5.5U3?