Database Backup (DBS) provides features such as single-table restoration, geo-redundancy, and long-term archiving for Oracle instances.
|Geo-redundancy||DBS can back up the data of an Oracle instance to a database in a different region in the cloud. DBS allows you to restore the backup data to a database in the cloud or to a standalone instance within the region where the source instance resides.|
|Long-term archiving||DBS can retain your backup data for up to ten years. After ten years, DBS transfers backup sets to Archive Storage.|
|Backup speed limit||DBS allows you to limit the backup speed to reduce the negative impact of backup operations on database performance.|
|Compressed storage||DBS supports the native compression algorithms of Oracle and the LZ4 compression algorithm.|
|Streaming backup||DBS directly writes backup data to Object Storage Service (OSS) without storing the data on a local disk first.|
|Encryption||DBS uses HTTPS encryption to transfer data and AES-256 encryption to store data.|
Create a backup schedule
For more information, see Purchase a backup schedule.
Configure a backup schedule
- 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.
- Find the ID of the backup schedule that you want to configure and click Configure Backup Schedule in the Actions column.
- In the Configure Backup Source and Destination step of the Configure Backup Schedule wizard, configure the backup source and destination, and click Next in the lower-right corner of the page.
Section Parameter Description N/A Schedule Name
The name of the backup schedule. DBS automatically generates a backup schedule name. We recommend that you set a descriptive name that is easy to identify. Backup schedule names do not need to be unique.
Backup Source Information Backup Mode
The method that is used to back up data. The default value of this parameter is the backup method that you selected when you purchased the backup schedule. In this example, Logical Backup is selected.
Database Location The location of the database that you want to back up. Valid values:
- User-Created Database with Public IP Address <IP Address:Port Number>
- ECS-Hosted Database
- Express Connect DB/VPN Gateway/Intelligent Gateway
- POLARDB InstanceNote For more information about the parameters to be set if you set the Database Location parameter to POLARDB Instance, see Back up a PolarDB O Edition instance by using logical backup.
- No public network IP: Port's self-built database (accessed through the database gateway)
Database Type The type of the database that you want to back up. Default value: Oracle. Region
The region in which the source database resides.
This parameter is displayed only if you set the Database Location parameter to ECS-Hosted Database or No public network IP: Port's self-built database (accessed through the database gateway).
AddressThe endpoint that is used to connect to the instance that you want to back up.Note If network security settings, such as firewall settings, are specified on the server where the instance is deployed, click Set Whitelist to obtain the CIDR blocks of DBS, and then add the CIDR blocks to the whitelist of the server. This allows DBS to access the server.
This parameter is displayed only if you set the Database Location parameter to User-Created Database with Public IP Address <IP Address:Port Number>, Express Connect DB/VPN Gateway/Intelligent Gateway, or No public network IP: Port's self-built database (accessed through the database gateway).
Port Number The port number that is used to connect to the database that you want to back up. Default value: 1521. ECS Instance ID The ID of the Elastic Compute Service (ECS) instance on which the database that you want to back up is deployed.
This parameter is displayed only if you set the Database Location parameter to ECS-Hosted Database.
Peer VPC The virtual private cloud (VPC) in which the database that you want to back up is deployed.
This parameter is displayed only if you set the Database Location parameter to Express Connect DB/VPN Gateway/Intelligent Gateway.
Gateway instance ID The ID of the database gateway.
This parameter is displayed only if you set the Database Location parameter to No public network IP: Port's self-built database (accessed through the database gateway).
SID The system identifier (SID) of the database that you want to back up. Database Account The username of the account that is used to connect to the database that you want to back up. Password
The password of the account that is used to connect to the database that you want to back up.
After you enter the username and password of the database account, click Test Connection next to the password to check whether the information of the database that you want to back up is valid. If the specified parameters are valid, the Test Passed message is displayed. If the Test Failed message is displayed, click Check next to Test Failed. Modify the information about the instance that you want to back up based on the check results.
Backup Destination Information Backup Storage Type The type of storage that is used to store the backup data. Valid values:
Note In this example, DBS Storage (recommended) is selected. If you select OSS For User, you must configure the OSS Bucket Name parameter, and only the Standard storage class is supported.
- DBS Storage (recommended): Backup data is stored in DBS without requiring you to create storage space. You are charged based on the volume of your data that is stored in DBS. For more information about the billing method, see Storage fees.
To reduce storage costs, we recommend that you use subscription storage plans. For more information, see Use storage plans.
- OSS For User: You must create a bucket in the Object Storage Service (OSS) console in advance. For more information, see Create buckets.
Storage Encryption The method that is used to encrypt the stored data. Valid values:
- Encrypted: recommended. DBS uses AES-256 to encrypt the stored data. AES-256 is one of the advanced encryption standard ciphers.
The server-side encryption feature is used in OSS. When you upload an object to OSS, OSS encrypts and stores the object. When you download the encrypted object from OSS, OSS decrypts the object and returns the decrypted object to you. For more information, see Server-side encryption.
- Non-encrypted: The backup data is not encrypted.
- In the Edit Backup Objects step, find the database or table that you want to back up and add it to the Selected section. Then, click Next. Note If you selected Logical Backup when you purchased a backup schedule, DBS allows you to back up a single table, a single database, multiple databases, or an entire database instance. You can click Select All in the lower-left corner of the page to select all databases. The database objects that can be backed up vary based on the database types. For more information, see Database engines and features. By default, a backup schedule cannot be used to back up a database that is created after the backup schedule is created. To back up the database, you can add the database to the backup schedule on the Configure Task page of the backup schedule. For more information, see Modify backup objects.
- In the Configure Backup Time step, configure the parameters that are described in the following table and click Next in the lower-right corner of the page.
Parameter Description Full-scale Backup Frequency
The frequency of the backup schedule. Select Periodic Backup or Single Backup as needed.Note If you set this parameter to Periodic Backup, you must set the Full Data Backup Recurrence and Start At parameters.
Full Data Backup Recurrence
The days of the week on which DBS runs the backup schedule. You can select one or more days of a week. Select at least one day of the week.
The start time of the backup. We recommend that you set a point in time within off-peak hours. Example: 01:00.Note If a previous full data backup is not finished at the start time of the next backup, DBS skips the next backup.
Incremental Backup DBS does not support incremental backup for Oracle databases. Maximum Concurrent Threads for Full Data Backup
The maximum number of concurrent threads available for a full backup. You can set this parameter to adjust the backup speed. For example, reduce the number of backup threads to minimize impacts on the database.
The maximum number of actual concurrent threads varies based on backup schedule specifications. For more information, see How do I change the maximum backup speed?
Backup network speed limit
The limit on the network bandwidth. Unit: MB/s. You can set the limit based on your needs. Default value: 0, which indicates that the network bandwidth is unlimited.
- In the Edit Lifecycle step, configure the lifecycle for a full backup set in the Configure Full Data Backup Lifecycle section. Note For more information about the lifecycle of backup data, see How do I manage the lifecycle rules of backup sets?.
- After the preceding configurations are complete, click Precheck in the lower-right corner of the page.
- If the Precheck Passed message appears, click Start Task.Note When the state of the backup schedule changes to Running, the backup schedule takes effect. You can view the backup task on the Backup Schedules page. For more information, see View a backup schedule.