On the Backup and Recovery page, you can perform operations such as immediate backup, modifying the backup strategy, and initiating recovery for an instance. You can also view task information for data backups, backup strategies, and data recovery.
Backup Principle
OceanBase Database is a read-write splitting system. Internally, data is divided into baseline data in SSTable format and incremental data in MemTable format based on the storage method. Physical backup in OceanBase Database involves copying the baseline data from a major compaction and the incremental data Commit Log generated after that major compaction to the storage system in the data center.
Baseline data is the sum of data compacted and stored on disks from the current major compaction. It is split into multiple shards, replicated into multiple copies, and evenly distributed across data files on OBServer nodes.
Incremental data consists of all updated data after the point in time of the current major compaction. It is typically stored in the MemTable in memory and is also instantiated and saved as Commit Log files.
Backup Content
The backup and recovery feature of OceanBase Database supports all operations on the database. Supported data includes logical data such as user privileges, table definitions, system variables, user information, and view information, as well as other data.
The minimum granularity currently supported by the backup feature in OceanBase Database is an instance, meaning data backup is only supported for an entire cluster instance.
Page Overview
After entering the instance Overview page, click Backup in the left navigation bar to go to the Backup and Recovery page.
On this page, you can view basic backup information for the instance and the resource usage of local backups.
On the Backup and Recovery page, you can also perform routine backup and recovery operations, including managing Backup Strategy, Restore, and Create Backup, or view information related to Data Backup, Backup Strategy, and Data Restore.
