CreateDownload - Database Backup - Alibaba Cloud Documentation Center

Creates an advanced download task for an ApsaraDB RDS for MySQL instance, an ApsaraDB RDS for PostgreSQL instance, or a PolarDB for MySQL cluster.

Operation description

Supported database engines

ApsaraDB RDS for MySQL
ApsaraDB RDS for PostgreSQL
PolarDB for MySQL

References

For the instances that meet your business requirements, you can create an advanced download task by point in time or backup set. You can set the download destination to a URL or directly upload the downloaded backup set to your Object Storage Service (OSS) bucket to facilitate data analysis and offline archiving.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
dbs:CreateDownload	Read	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
RegionCode	string	Yes	The ID of the region in which the instance resides. You can call the DescribeDBInstanceAttribute operation to query the region ID of the instance.	cn-beijing
InstanceName	string	Yes	The ID of the instance.	rm-wz994c1t1****
BakSetType	string	No	The type of the download task. Valid values: full: downloads a full backup set. pitr: downloads a backup set at a specific point in time.	full
BakSetId	string	No	The ID of the backup set. You can call the DescribeBackups operation to query the ID of the backup set. Note This parameter is required if the BakSetType parameter is set to full.	146005****
DownloadPointInTime	string	No	The point in time at which the backup set is downloaded. Specify a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC. Note This parameter is required if the BakSetType parameter is set to pitr.	1661331864000
BakSetSize	string	No	The size of the full backup set. Unit: bytes. You can call the DescribeBackups operation to query the size of the full backup set.	216****
FormatType	string	No	The format to which the downloaded backup set is converted. Valid values: CSV SQL Parquet Note This parameter is required.	CSV
TargetType	string	No	The type of the destination to which the backup set is downloaded. Valid values: OSS URL	OSS
TargetBucket	string	No	The name of the OSS bucket that is used to store the backup set. This parameter is required if the TargetType parameter is set to OSS. Make sure that your account is granted the AliyunDBSDefaultRole permission. For more information, see Use RAM for resource authorization. You can also grant permissions based on the operation instructions in the Resource Access Management (RAM) console.	test123
TargetPath	string	No	The destination path to which the backup set is downloaded. Note This parameter is required if the TargetType parameter is set to OSS.	test_db/path
TargetOssRegion	string	No	The region in which the OSS bucket resides. Note This parameter is required if the TargetType parameter is set to OSS.	cn-beijing

Response parameters

Parameter	Type	Description	Example
	object	The response parameters.
RequestId	string	The ID of the request.	A08F908D-2C35-583F-93C1-ED80753F****
ErrCode	string	The error code returned if the request failed.	DBS.ParamIsInValid
Success	string	Indicates whether the request was successful. Valid values: true: The request was successful. false: The request failed.	true
ErrMessage	string	The error message returned if the request failed.	formatType can not be empty
Code	string	The status code returned.	DBS.ParamIsInValid
Message	string	The error message returned if the request failed.	formatType can not be empty
Data	object	The information about the download task.
BakSetId	string	The ID of the full backup set.	146005****
DownloadStatus	string	The state of the download task. Valid values: initializing: The download task was being initialized. queuing: The download task was queuing. running: The download task was running. failed: The download task failed. finished: The download task was complete. expired: The download task expired. Note If the TargetType parameter is set to URL, the download task expires in three days after the task is complete.	initializing
Progress	string	The number of tables that have been downloaded and the total number of tables to be downloaded. Note If the task is in the preparation stage, 0/0 is returned.	0/0
BackupSetTime	long	The point in time of the backup set if the task is used to download a backup set at a specific point in time. This value is a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC.	1661373070000
RegionCode	string	The ID of the region in which the instance resides.	cn-beijing
TargetPath	string	The destination path to which the backup set is downloaded. Note This parameter is returned if the value of TargetType is OSS.	test_db/path
DbList	string	The database and table information that is returned if databases and tables are filtered by the download task.	testdb
ExportDataSize	long	The size of the downloaded data. Unit: bytes.	0
ImportDataSize	long	The size of the processed data. Unit: bytes.	0
GmtCreate	long	The time when the download task was created. This value is a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC.	1661940917570
TaskId	string	The ID of the download task.	dt-qxnsfq5s****
Format	string	The format to which the downloaded data is converted.	CSV
TargetType	string	The type of the destination to which the backup set is downloaded.	URL

Examples

Sample success responses

JSONformat

{
  "RequestId": "A08F908D-2C35-583F-93C1-ED80753F****",
  "ErrCode": "DBS.ParamIsInValid",
  "Success": "true",
  "ErrMessage": "formatType can not be empty",
  "Code": "DBS.ParamIsInValid",
  "Message": "formatType can not be empty",
  "Data": {
    "BakSetId": "146005****",
    "DownloadStatus": "initializing",
    "Progress": "0/0",
    "BackupSetTime": 1661373070000,
    "RegionCode": "cn-beijing",
    "TargetPath": "test_db/path",
    "DbList": "testdb",
    "ExportDataSize": 0,
    "ImportDataSize": 0,
    "GmtCreate": 1661940917570,
    "TaskId": "dt-qxnsfq5s****",
    "Format": "CSV",
    "TargetType": "URL"
  }
}

Error codes

HTTP status code	Error code	Error message
403	Request.Forbidden	Have no Permissions

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation

No change history