This topic describes the monitoring metric number of transaction logs within an OceanBase Database tenant. The atomicity, consistency, isolation, and durability (ACID) of a transaction depend on transaction log tracking. Each operation is written to a log file before it is written to a database. After the transaction is committed, the SQL statements involved in the transaction are batch synchronized to the database files on a disk. After the logs in the log file are synchronized to the disk, the corresponding space is automatically released. You can specify a statistical period to query statistics about the number of transaction logs in a single zone or on a single OBServer of an OceanBase Database tenant.
Number of transaction logs
Definition
The number of transaction logs committed per second within a tenant in the specified statistical period.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| - | trans_commit_log_count | count |
Calculation expression
sum(rate(ob_sysstat{stat_id="30002",@LABELS}[@INTERVAL])) by (@GBLABELS)
