This topic describes the metrics for ApsaraDB PolarDB for PostgreSQL or ApsaraDB PolarDB for Oracle.

When you call an API operation provided by Cloud Monitor, you may need to set the Namespace and Period parameters. Set the parameters for ApsaraDB for the current service in the following way:

  • Set the Namespace parameter to acs_polardb.
  • Set the Period parameter to an integral multiple of 60s. The default value is 60s.

The following table describes the valid values of the MetricName and Dimensions parameters for the current service.

Metric Unit Metric Dimensions Statistics
Active Connection Count active_connections userId, clusterId, and instanceId Average
BlockRead Count blks_read_delta userId, clusterId, and instanceId Value
Connection Usage % conn_usage userId, clusterId, and instanceId Average
CPU Usage % cpu_total userId, clusterId, and instanceId Average
DB Age xids db_age userId, clusterId, and instanceId Value
Memory Usage % mem_usage userId, clusterId, and instanceId Average
Data Size Mbyte pls_data_size userId, clusterId, and instanceId Value
IOPS Frequency pls_iops userId, clusterId, and instanceId Average
Read IOPS Frequency pls_iops_read userId, clusterId, and instanceId Average
Write IOPS Frequency pls_iops_write userId, clusterId, and instanceId Average
WAL Log Size Mbyte pls_pg_wal_dir_size userId, clusterId, and instanceId Value
IO Throughout Mbyte/s pls_throughput userId, clusterId, and instanceId Average
Read IO Throughput Mbyte/s pls_throughput_read userId, clusterId, and instanceId Average
Write IO Throughput Mbyte/s pls_throughput_write userId, clusterId, and instanceId Average
Swell Time s swell_time userId, clusterId, and instanceId Average
TPS Frequency tps userId, clusterId, and instanceId Average