- What's New
- Product Bulletin
- Service Overview
- Billing
- Getting Started
-
User Guide
- Function Overview
- Kernel Version Notes
- Permissions Management
-
Instance Management
- Instance Statuses
- Buying a DDM instance
- Splitting Read-only and Read-Write Services
- Changing Node Class
- Scaling Out a DDM Instance
- Scaling In a DDM Instance
- Restarting a DDM Instance or an Instance Node
- Deleting Pay-per-Use Instances
- Reloading Table Data
- Changing a Parameter Template
- Modifying Parameters of a DDM Instance
- Rolling Back the Version of a DDM Instance
- Upgrading the Version of a DDM Instance
- Upgrading the DDM Engine and OS
- Connection Management
- Schema Management
- Shard Configuration
- Data Nodes
-
Parameter Template Management
- Instance Parameters
- Creating a Parameter Template
- Modifying a Custom Parameter Template
- Comparing Two Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying the Description of a Parameter Template
- Deleting a Parameter Template
- Account Management
- Backups and Restorations
-
Data Migration
- Overview
- Migration Evaluation
- Scenario 1: Migrating Data from an On-Premises MySQL Instance to DDM
- Scenario 2: Migrating Data from a Third-Party Cloud MySQL Instance to DDM
- Scenario 3: Migrating Data from an ECS-hosted MySQL Instance on Huawei Cloud to DDM
- Scenario 4: Exporting Data from a DDM Instance
- Scenario 5: Migrating Data from Heterogeneous Databases to DDM
- Scenario 6: Migrating Data from Huawei Cloud RDS for MySQL to DDM
- Session Management
- Slow Queries
- Monitoring and Alarm Reporting
- Task Center
- Tags
- Auditing
-
SQL Syntax
- Introduction
- DDL
- DML
- Online DDL
- Functions
- Unsupported Objects and Use Constraints
- Supported SQL Statements
- Global Sequence
- Database Management Syntax
- Advanced SQL Functions
- Quotas
-
API Reference
- Before You Start
- API Overview
- Calling APIs
-
APIs (Recommended)
-
DDM Instances
- Buying a DDM instance
- Querying DDM Instances
- Querying Details of a DDM Instance
- Modifying the Name of a DDM Instance
- Changing the Security Group of a DDM Instance
- Deleting a DDM Instance
- Restarting a DDM Instance
- Reloading Table Data
- Scaling Out a DDM Instance
- Scaling in a DDM instance
- Modifying the Read Policy of the Associated DB Instance
- Synchronizing Data Node Information
- Querying Nodes of a DDM Instance
- Querying Details of a DDM Instance Node
- Querying Parameters of a Specified DDM Instance
- Modifying Parameters of a DDM Instance
- Querying DDM Engine Information
- Querying DDM Node Classes Available in an AZ
- Changing the Node Class of a DDM Instance
- Obtaining the Instance Group Information
- Creating an Instance Group
- Schemas
- Accounts
- Monitoring
- Session Management
- Application Examples
-
DDM Instances
- Permissions Policies and Supported Actions
- Appendix
- SDK Reference
-
Best Practices
- Overview
- Formulating Sharding Rules
- Determining the Number of Shards in a Schema
- Using Broadcast and Unsharded Tables
- Transaction Models
- SQL Standards
- Migrating an Entire RDS Database to DDM
- Migrating an Entire MyCat Database to DDM
- Accessing DDM Using a JDBC Connection Pool
- Logging In to a DDM Instance Using Navicat
- Migrating Data from RDS for MySQL to DDM Using DRS
- Sharding Database and Table Data of an RDS for MySQL Instance
- Performance White Paper
-
FAQs
- General Questions
-
DDM Usage
- How Does DDM Perform Sharding?
- What Do I Do If I Fail to Connect to a DDM Instance Using the JDBC Driver?
- Why It Takes So Long Time to Export Data from MySQL Using mysqldump?
- What Do I Do If a Duplicate Primary Key Error Occurs When Data Is Imported into DDM?
- What Should I Do If an Error Message Is Returned When I Specify an Auto-Increment Primary Key During Migration?
- What Do I Do If an Error Is Reported When Parameter Configuration Does Not Time Out?
- Which Should I Delete First, a Schema or its Associated RDS Instances?
- Can I Manually Delete Databases and Accounts Remained in Data Nodes After a Schema Is Deleted?
- SQL Syntax
-
RDS-related Questions
- Is the Name of a Database Table Case-Sensitive?
- What Risky Operations on RDS for MySQL Will Affect DDM?
- How Do I Handle Data with Duplicate Primary Keys in a Table?
- How Can I Query RDS for MySQL Information by Running Command show full innodb status?
- What Should I Pay Attention to When Selecting RDS for MySQL Instance Specifications?
- Connection Management
- Resource Freezing, Release, Deletion, and Unsubscription
- Videos
-
More Documents
-
User Guide (ME-Abu Dhabi Region)
- Service Overview
- Getting Started
- Function Overview
- Instance Management
-
Parameter Template Management
- Creating a Parameter Template
- Editing a Parameter Template
- Comparing Two Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying the Description of a Parameter Template
- Deleting a Parameter Template
- Task Center
- Schema Management
- Account Management
- Backup Management
- Monitoring Management
- Auditing
-
SQL Syntax
- Introduction
- DDL
- DML
- Functions
- Unsupported Items
- Supported SQL Statements
- Global Sequence
- Database Management Syntax
- Advanced SQL Functions
-
FAQs
- General Questions
-
DDM Usage
- How Can I Rectify a Fault in Accessing DDM by Using the JDBC Driver?
- What Version and Parameters Should I Select?
- Why It Takes So Long Time to Export Data from MySQL Using mysqldump?
- How Should I Handle the Duplicate Primary Key Error Occurring After Data Is Imported into DDM?
- What Should I Do If an Error Message Is Returned After I Specify an Auto-Increment Primary Key?
- How Do I Handle the Error Reported When Parameter Configuration Does Not Time Out?
- Which Should I Delete First, Schema or Associated RDS DB Instances?
- Should I Manually Delete Databases and Accounts Remained in the Associated RDS DB Instances After a Schema Is Deleted?
- SQL Syntax
- RDS-related Questions
- Connection Management
-
User Guide (Kuala Lumpur Region)
- Service Overview
- Getting Started
- Function Overview
- Instance Management
-
Parameter Template Management
- Creating a Parameter Template
- Editing a Parameter Template
- Comparing Two Parameter Templates
- Viewing Parameter Change History
- Replicating a Parameter Template
- Applying a Parameter Template
- Viewing Application Records of a Parameter Template
- Modifying the Description of a Parameter Template
- Deleting a Parameter Template
- Task Center
- Schema Management
- Account Management
- Backup Management
- Monitoring Management
- Auditing
-
SQL Syntax
- Introduction
- DDL
- DML
- Functions
- Unsupported Items
- Supported SQL Statements
- Global Sequence
- Database Management Syntax
- Advanced SQL Functions
-
FAQs
- General Questions
-
DDM Usage
- How Can I Rectify a Fault in Accessing DDM by Using the JDBC Driver?
- What Version and Parameters Should I Select?
- Why It Takes So Long Time to Export Data from MySQL Using mysqldump?
- How Should I Handle the Duplicate Primary Key Error Occurring After Data Is Imported into DDM?
- What Should I Do If an Error Message Is Returned After I Specify an Auto-Increment Primary Key?
- How Do I Handle the Error Reported When Parameter Configuration Does Not Time Out?
- Which Should I Delete First, Schema or Associated RDS DB Instances?
- Should I Manually Delete Databases and Accounts Remained in the Associated RDS DB Instances After a Schema Is Deleted?
- SQL Syntax
- RDS-related Questions
- Connection Management
-
API Reference (Kuala Lumpur Region)
- Before You Start
- API Overview
- Calling APIs
-
DDM Instance Management
- Querying DDM Engine
- Querying the Quota of Classes Available in Each AZ
- Creating a DDM Instance
- Querying DDM Instances
- Viewing Details of a DDM Instance
- Modifying the Name of a DDM Instance
- Modifying the Security Group of a DDM Instance
- Deleting a DDM Instance
- Restarting a DDM Instance
- Reloading Table Data
- Scaling Out a DDM instance
- Scaling In a DDM instance
- Modifying the Read Policy of the Associated DB Instance
- Synchronizing DB Instance Data
- Querying Nodes of a DDM Instance
- Querying Details of a DDM Instance Node
- Querying Parameters of a Specified DDM Instance
- Modifying Parameters of a DDM Instance
- Schema Management
- Account Management
- Monitoring Management
- Permissions Policies and Supported Actions
- Appendix
- Change History
-
User Guide (ME-Abu Dhabi Region)
- General Reference
Show all
Copied.
[Change Notice]DDM Instance Bills Are Changing
On June, 1, 2023, 00:00 GMT+08:00, Huawei Cloud will change the way your instance bill is displayed to improve your experience with Distributed Database Middleware (DDM).
Change Content
On the new bill, the service types, resource types, and resource IDs of sub-resources will all be replaced with those of the primary resource. Historical bills remain unchanged.
The following uses a monthly transaction bill and usage details of a single-node DDM instance billed on a pay-per-use basis as an example. For transaction bills and usage details of yearly/monthly instances, refer to the following table (the main change is highlighted in red).
Original transaction bill
Service Type |
Resource Type |
Billing Mode |
Expenditure Time |
Order No./Transaction No. |
Transaction Time |
Bill Type |
Specifications |
Usage Type |
Region |
---|---|---|---|---|---|---|---|---|---|
Distributed Database Middleware (DDM) |
Distributed Database Middleware Cluster |
Pay-per-Use |
2023-05-11 13:00:00 GMT+08:00 |
1945dd86-5007-4475-b4e8-cde1976a9194 |
2023-05-11 14:00:00 GMT+08:00 |
Expenditure-use |
ddm|cluster |
architecture |
CN-Hong Kong |
Distributed Database Middleware (DDM) |
Distributed Database Middleware |
Pay-per-Use |
2023-05-11 13:00:00 GMT+08:00 |
4dfcea0a-da57-4146-bc8e-71a387767f11 |
2023-05-11 14:00:00 GMT+08:00 |
Expenditure-use |
Distributed Database Middleware (DDM)_c6_8 vCPUs | 16 GB |
Duration |
CN-Hong Kong |
New transaction bill
On the new bill, the Service Type and Resource Type columns both display primary resource information.
Service Type |
Resource Type |
Billing Mode |
Expenditure Time |
Order No./Transaction No. |
Transaction Time |
Bill Type |
Specifications |
Usage Type |
Region |
Sub-resource Product Type |
Sub-resource Product |
---|---|---|---|---|---|---|---|---|---|---|---|
Distributed Database Middleware (DDM) |
Distributed Database Middleware Cluster |
Pay-per-Use |
2023-05-11 13:00:00 GMT+08:00 |
1945dd86-5007-4475-b4e8-cde1976a9194 |
2023-05-11 14:00:00 GMT+08:00 |
Expenditure-use |
ddm|cluster |
architecture |
CN-Hong Kong |
Distributed Database Middleware |
Distributed Database Middleware Cluster |
Distributed Database Middleware (DDM) |
Distributed Database Middleware Cluster |
Pay-per-Use |
2023-05-11 13:00:00 GMT+08:00 |
4dfcea0a-da57-4146-bc8e-71a387767f11 |
2023-05-11 14:00:00 GMT+08:00 |
Expenditure-use |
Distributed Database Middleware (DDM)_c6_8 vCPUs | 16 GB |
Duration |
CN-Hong Kong |
Distributed Database Middleware |
Distributed Database Middleware |
Original usage details
Service Type |
Resource Type |
Billing Mode |
Expenditure Time |
Order No./Transaction No. |
Transaction Time |
Bill Type |
Resource ID |
Resource Name |
Specifications |
Usage Type |
Region |
---|---|---|---|---|---|---|---|---|---|---|---|
Distributed Database Middleware (DDM) |
Distributed Database Middleware Cluster |
Pay-per-Use |
2023-05-11 13:00:00 GMT+08:00 |
d5f5b7a8-da6c-4596-8bce-0e96e8861384 |
2023-05-11 14:00:00 GMT+08:00 |
Expenditure-use |
ce7bdcae1ce746c98327318039f4d411in09 |
ddm-b908 |
ddm|cluster |
architecture |
CN-Hong Kong |
Distributed Database Middleware (DDM) |
Distributed Database Middleware |
Pay-per-Use |
2023-05-11 13:00:00 GMT+08:00 |
c322aa35-8040-4579-9ce4-14a15850e682 |
2023-05-11 14:00:00 GMT+08:00 |
Expenditure-use |
2de9553e48db4ab989179a5336162a7ano09.vm |
ddm-b908 |
Distributed Database Middleware (DDM)_c6_8 vCPUs | 16 GB |
Duration |
CN-Hong Kong |
New usage details
The Service Type, Resource Type, Resource ID, and Resource Name columns all display primary resource information.
Service Type |
Resource Type |
Billing Mode |
Expenditure Time |
Order No./Transaction No. |
Transaction Time |
Bill Type |
Resource ID |
Resource Name |
Specifications |
Usage Type |
Region |
Sub-resource ID |
Sub-resource Name |
Sub-resource Product Type |
Sub-resource Product |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distributed Database Middleware (DDM) |
Distributed Database Middleware Cluster |
Pay-per-Use |
2023-05-11 13:00:00 GMT+08:00 |
1945dd86-5007-4475-b4e8-cde1976a9194 |
2023-05-11 14:00:00 GMT+08:00 |
Expenditure-use |
ce7bdcae1ce746c98327318039f4d411in09 |
ddm-b908 |
ddm|cluster |
architecture |
CN-Hong Kong |
2de9553e48db4ab989179a5336162a7ano09.vm |
ddm-b908 |
Distributed Database Middleware |
Distributed Database Middleware |
Distributed Database Middleware (DDM) |
Distributed Database Middleware Cluster |
Pay-per-Use |
2023-05-11 13:00:00 GMT+08:00 |
4dfcea0a-da57-4146-bc8e-71a387767f11 |
2023-05-11 14:00:00 GMT+08:00 |
Expenditure-use |
ce7bdcae1ce746c98327318039f4d411in09 |
ddm-b908 |
Distributed Database Middleware (DDM)_c6_8 vCPUs | 16 GB |
Duration |
CN-Hong Kong |
ce7bdcae1ce746c98327318039f4d411in09 |
ddm-b908 |
Distributed Database Middleware |
Distributed Database Middleware Cluster |
For other changes, see Bills.
Change Time
The change will be applied starting June, 1, 2023, 00:00 GMT+08:00. During the change, you can still access your DDM instances.
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