Checks whether a database name is unique and conforms to the naming conventions on an instance.
Operation description
Debugging
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 Resourcesis 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 |
|---|---|---|---|---|
| rds:CheckDBNameAvailable | get | *DBInstance acs:rds:{#regionId}:{#accountId}:dbinstance/{#dbinstanceId} |
| none |
Request parameters
| Parameter | Type | Required | Description | Example |
|---|---|---|---|---|
| ClientToken | string | No | The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token can contain only ASCII characters and cannot exceed 64 characters in length. | ETnLKlblzczshOTUbOCzxxxxxxxxxx |
| DBInstanceId | string | Yes | The instance ID. You can call the DescribeDBInstances operation to query the instance ID. | rm-t4n3axxxxx |
| DBName | string | Yes | The database name that you want to check. | test1 |
Response parameters
Examples
Sample success responses
JSONformat
{
"RequestId": "6EF82B07-28D2-48D1-B5D6-7E78FED277C7"
}Error codes
| HTTP status code | Error code | Error message | Description |
|---|---|---|---|
| 400 | Database.ConnectError | Database connect error. please check instance status and database processlist | A database connection error occurred. Check the instance state and the database connection pool. |
| 400 | Database.QueryError | invalid value, may include special character. | The value is invalid and may contain special characters. |
| 400 | InvalidDBName.Format | Specified DB name is not valid. | The database name is invalid. Specify a valid name. The name can be up to 16 characters in length and can contain lowercase letters, digits, and underscores (_). The name must start with a lowercase letter and end with a lowercase letter or a digit. |
| 400 | InvalidDBName.Forbid | Specified DB name is a keyword in RDS. | Failed to specify the database name. The database name cannot contain the forbidden keyword DBName. Modify the database name. |
| 400 | InvalidDBName.Duplicate | Specified DB name already exists in the This instance. | A database with the same name has been created on the RDS instance. Specify a different name. |
| 403 | IncorrectDBInstanceType | Current DB instance engine and type does not support operations. | The operation failed. The operation is not supported for the database engine of the RDS instance. |
| 403 | IncorrectDBInstanceState | Current DB instance state does not support this operation. | - |
| 404 | InvalidDBInstanceName.NotFound | Invalid DBInstanceId NotFound. | The instance ID cannot be found. |
| 404 | IncorrectDBInstanceLockMode | Current DB instance lock mode does not support this operation. | The operation failed. The RDS instance is locked. |
For a list of error codes, visit the Service error codes.
Change history
| Change time | Summary of changes | Operation |
|---|---|---|
| 2022-09-05 | The Error code has changed | View Change Details |