Session Alerts

Session alerts monitor the number of active user connections to the Yellowbrick database system. These alerts help detect potential overload situations where the system is nearing or exceeding its configured connection capacity.

Purpose

A high number of concurrent sessions can impact performance and prevent new users from connecting. These alerts are triggered based on thresholds defined for max_user_connections and allow for early detection of stress before it causes failures.

Yellowbrick triggers these alerts at two severity levels:

• MAJOR: Usage exceeds 85% of the limit.
• CRITICAL: Usage exceeds 95% of the limit.

Both thresholds require sustained overuse (5 minutes) to reduce false positives. The actual connection count at alert time is embedded in [current_value].

Thresholds are configurable and documented on the thresholds page.

Alert Definitions

Alert	Severity	Trigger After	Description	Threshold Ref
High Database Connections	CRITICAL	5m	The number of user connections has exceeded 95% of the configured threshold for at least 5 minutes. Current: [current_value].	max_user_connections
High Database Connections	MAJOR	5m	The number of user connections has exceeded 85% of the configured threshold for at least 5 minutes. Current: [current_value].	max_user_connections