https://en.oceanbase.com/docs/community-ocp-en-10000000000839971
Set an alert-blocking condition|V4.0.0|OceanBase Cloud Platform|OCP docs|Distributed Database
OceanBase Community Edition Documentation,Set an alert-blocking condition,provides guides,examples,and reference material you need to use OceanBase Cloud...
set an alert
https://www.daktronics.com/en-us/support/kb/DD2004699
Getting alert when trying to retrieve message: Object Reference not set to an instance of an object