This topic describes the system events for AnalyticDB for PostgreSQL.
| Type | Event | Description | Status | Level |
|---|---|---|---|---|
| Exception | ComputeGroupCpuHigh | The CPU utilization of a compute group exceeds 90%. | Failed | Critical |
| Exception | ComputeGroupMemoryHigh | The memory usage of a compute group exceeds 85%. | Failed | Critical |
| Exception | HighCoumputeGroupDiskUsed | The disk usage of a compute group exceeds 80%. | Failed | Critical |
| Exception | InstanceDown | An instance is unavailable. | Failed | Critical |
| Exception | LongTransaction | The number of long-running transactions is greater than or equal to 5. | Failed | Critical |
| Exception | MasterCpuHigh | The CPU utilization of a master node exceeds 90%. | Failed | Critical |
| Exception | MasterMemoryHigh | The memory usage of a master node exceeds 85%. | Failed | Critical |
| Exception | NonSuperConnection | The proportion of connections to an instance exceeds 80%. | Failed | Critical |
| Exception | XidAgeHigh | The age of a transaction ID (XID) exceeds 400 million. | Failed | Critical |