The exception alarms feature displays the information overview of exception alarms (exceptions detected by "24/7 Exception Diagnosis") generated by database instances connected to DBbrain under your account.

Note：

Currently, the exception alarms feature is only supported for TencentDB for MySQL (excluding the basic single-node instance).

Exception Alarm List

1. Log in to the DBbrain console, select Monitoring & Alarm > Exception Alarm on the left sidebar, and select a database type at the top.

The exception alarm list displays the basic information of the database instance, risk level, diagnosis items, duration, and operations. In the search bar, you can search instances by instance ID, instance name, diagnosis item, etc. You can also filter instances by region and time.

• Risk levels include notice, warning, severe, and fatal. You can filter, aggregate, and search for alarms by field. You can also click Details to view specific information about the exception and the optimization suggestion for the exception.
• There are over 30 diagnosis items for exception diagnosis, such as slow SQL, primary-secondary switch, deadlock, uncommitted transaction, and OOM. You can filter, aggregate, and search for items by field. You can also sort them by duration.

Ignoring/Unignoring an Alarm

You can ignore or unignore diagnosis item alarms that are not generated by health checks to filter exception alarms.

• In the exception alarm list, locate an alarm and click Ignore in the Operation column to ignore it. By doing so, other diagnosis item alarms of the instance generated by the same root cause will also be ignored.

• In the exception alarm list, an ignored alarm will be grayed out. You can click Unignore to unignore it and other diagnosis item alarms generated by the same root cause.

Detailed Description of Diagnosis Items

A diagnosis item is an item diagnosed intelligently, which can be divided into four categories: performance, availability, reliability, and maintainability. Each diagnosis item belongs to only one category.