Monitoring metrics for custom alerts|OceanBase Cloud

Monitoring metrics for custom alerts

Last Updated：2026-08-07 03:28:54 Updated

OB Cloud provides some common alert monitoring metrics. You can select the corresponding metrics to configure alerts based on your business needs. This topic lists the metrics available for alerts in the current version.

Instance alerts

Metrics

Metric Type	Metric name
disk	OceanBase Data Disk Usage OceanBase Data Disk Utilization Data Disk Utilization of the OceanBase Node
CPU	CPU Usage of OB Node
Memory	Memory Usage of OB Nodes
IO	I/O operations per second Average system load in the last minute Read disk response time Data disk I/O read time OB data disk I/O usage Average I/O time per operation Data disk I/O write time OB data disk IOPS OB host IOPS usage OB host throughput usage Data disk IOPS read Data disk IOPS write Log disk IOPS read Log disk IOPS write CPU system load in the last minute
Network	Data received per second Data sent per second NTP clock offset Inbound and outbound packet traffic ratio of the OB node's NIC Connection latency of the cross-cloud network channel (Tencent Cloud) Inbound bandwidth utilization of the cross-cloud network channel (Alibaba Cloud) Outbound bandwidth utilization of the cross-cloud network channel (Alibaba Cloud) Inbound bandwidth utilization of the cross-cloud network channel (Tencent Cloud) Outbound bandwidth utilization of the cross-cloud network channel (Tencent Cloud) Inbound packets of the cross-cloud network channel (Alibaba Cloud) Outbound packets of the cross-cloud network channel (Alibaba Cloud) Inbound packets of the cross-cloud network channel (Tencent Cloud) Outbound packets of the cross-cloud network channel (Tencent Cloud) Packets lost in the cross-cloud network channel (Tencent Cloud)
Service Availability	Time elapsed since the last major compaction of the OB cluster. Merge error in the OB cluster. Merge timeout in the OB cluster.
cache	Block cache hit rate Bloomfilter cache hit rate Clog cache hit rate Execution plan cache hit rate Location cache hit rate Row cache hit rate

Events

Event type	Event Name
Service Availability	Log backup delay Data backup task timeout The SSL certificate of the OB cluster has expired. The SSL certificate of the OB cluster is about to expire.

Tenant alerts

Metrics

Metric Type	Metric name
Transactions and SQL	Average transaction commit time Transactions Per Second (TPS) SQL Statements Per Second Number of Slow SQL Queries Incremental refresh latency of tenant materialized views
Resources and Performance	MEMStore: Tenant Active Memory Memstore Usage Percentage Memstore Usage CPU: OB Node Tenant CPU Usage Tenant CPU Usage Session: Current Active Sessions Current Sessions I/O: Read IOPS Physical I/O Throughput I/O Data Volume per Second Write IOPS Write I/O Throughput SQL: SQL Waiting Time in Queue Average Processing Time of SQL Statements at P99, P95, and P90 Percentiles. Average Processing Time of SELECT Statements at P99, P95, and P90 Percentiles. Average Processing Time of INSERT Statements at P99, P95, and P90 Percentiles. Average Processing Time of UPDATE Statements at P99, P95, and P90 Percentiles. Average Processing Time of DELETE Statements at P99, P95, and P90 Percentiles. Average Processing Time of REPLACE Statements at P99, P95, and P90 Percentiles. Average Processing Time of COMMIT Statements at P99, P95, and P90 Percentiles. Average Processing Time of Other Statements at P99, P95, and P90 Percentiles.
Binlog Service	Binlog conversion delay Binlog subscription delay Abnormal binlog subscription count Binlog disk usage Binlog disk usage amount
Service Availability	Time elapsed since the last major compaction of the OB tenant. Merge error of the OB tenant.

Events

Event type	Event Name
Transactions and SQL	The tenant has slow SQL statements. The tenant has SQL statements with performance degradation. The tenant has SQL statements with deteriorated execution plans. The incremental refresh of materialized views in the tenant is abnormal.

Database proxy metrics

Metrics

Metric Type	Metric name
Resources and Performance	Session: Number of OB server connections Number of client connections
Transactions and SQL	Number of OBProxy SQL Execution Errors

Data services

Metrics

Metric Type	Metric name
Data Migration	Data Migration Incremental Synchronization Latency

Events

Event type	Event Name
Data Archiving	Data archiving execution timed out. Data archiving scheduling failed. Data archiving execution failed.
Data cleanup	Data cleanup execution timed out. Data cleanup scheduling failed. Data cleanup execution failed.
Data Import	Data import execution timed out. Data import scheduling failed. Data import execution failed.
Data Migration	Data Migration Task Exception

OceanBase

Customer Stories

Documentation

Monitoring metrics for custom alerts

Instance alerts

Metrics

Events

Tenant alerts

Metrics

Events

Database proxy metrics

Metrics

Data services

Metrics

Events