This topic describes how to restore an ApsaraDB RDS for PostgreSQL database by using Database Backup (DBS).
The database is backed up. For more information, see Back up an ApsaraDB RDS for PostgreSQL instance.
- Log on to the DBS console.
- In the left-side navigation pane, click Backup Schedules. On the Backup Schedules page, select a region in the upper-left corner.
- On the Backup Schedules page, find the ID of your backup schedule and click Manage in the Actions column.
- On the Configure Task page, click Restore Database in the upper-right corner.
- In the Set Time Restored To step, set the parameters that are described in the following table and click Next.
Section Parameter Description N/A Task Name
The name of the restore task. DBS generates a task name. We recommend that you set a descriptive name that is easy to identify. Task names do not have to be unique.
Set Time Restored To Time Range Available to Restore
The time range from the point in time when the first full backup set is created to the point in time when the latest full backup set is created. The database can be restored to a point in time within the time range.
Restore To The point in time to which you want to restore the source database. The value must be within the time range that is specified by the Time Range Available to Restore parameter. Configure Destination Database Database Location The location to which you want to restore the backup set. In this example, select RDS Instance to restore the backup set to an ApsaraDB RDS for PostgreSQL instance that is created in advance. Make sure that the destination instance is running. You can also restore the backup set to the following types of locations:
Note If you select location types other than RDS Instance, you must set more parameters. For more information, see Other parameters.
- User-Created Database with Public IP Address <IP Address:Port Number>
- ECS-Hosted Database
- Express Connect DB/VPN Gateway/Intelligent Gateway
- POLARDB Instance
- No public network IP: Port's self-built database (accessed through the database gateway)
Instance Region The region where the destination instance to which you want to restore the backup set resides. RDS Instance ID The ID of the destination instance to which you want to restore the backup set. Database Name
The name of the destination database to which you want to restore the backup set.
The username of the account used to connect to the destination database. You must have write permissions on the database.
The password of the account used to connect to the database that you want to back up.
- In the Configure Objects to Restore step, set the parameters that are described in the following table and click Precheck in the lower-right corner of the page.
Parameter Description Conflict Handling Select one of the following methods for conflict handling:
- Fail when Object with the Same Name Exists.
- Rename Object with the Same Name: If you select this option, DBS renames the new table that is to be created by the restore task. For example, a table to be restored in the source database and an existing table in the destination database have the same name
job_info. The system renames the new table that is restored from the table in the source database in the following format:
job_info_dbs_<ID of the restore task>_</Timestamp>.
Objects to Restore The database or table that you want to restore. Select the database or table that you want to restore in the Available section and click the right arrow to add it to the Selected section.Note DBS allows you to restore a single table or a single database. This reduces the amount of data to be restored and shortens the recovery time objective (RTO).
- After the Precheck Passed message appears in the Precheck dialog box, click Start Task.
To view the progress of the restore task, go to the backup schedule management page in the DBS console and click in the left-side navigation pane.Note The amount of time used to restore a database depends on the specifications of the backup schedule and the size of the database. Higher specifications offer a higher restore speed. For more information, see Performance tests on backup and restoration.