On the backup page, you can perform operations such as performing immediate backup, modifying the backup strategy, initiating restore, and also viewing the task information related to data backups, backup strategies, and data restores.
Backup principle
OceanBase Database is a read/write splitting system. Internal data of OceanBase Database is divided into baseline data in the SSTable and incremental data in the MemTable based on the storage method. In a physical backup process of OceanBase Database, the baseline data of a major compaction and the commit logs of incremental data generated after the major compaction are copied to the storage system in an IDC.
The baseline data refers to the data compacted and stored on disks. It is split into multiple shards, copied into multiple replicas, and evenly distributed in data files on OBServer nodes.
The incremental data refers to all the new data generated after the point in time of the current major compaction. It is usually stored in the MemTable and instantiated into a clog file.
Backup content
The backup feature applies to all operations in OceanBase Database. You can back up and restore logical data such as user privileges, table definitions, system variables, user information, and view information, and data of other types.
The smallest backup unit supported by OceanBase Database is an instance. That is, you can back up data only for an entire instance.
Page overview
After entering the instance details page, click Backup in the left-side navigation pane to go to the backup page.
Note
If the cloud vendor is Azure and the OceanBase version is lower than V4.3.5.3, the Backup entry is unavailable.
On this page, you can view the basic backup information and the resource usage of local backups of the instance.
On the backup page, you can also perform routine backup and restore operations, including managing Backup policy, Restore, and Create Backup, and viewing the information related to Data Backup, Backup policy, and Data Restore.
