- What's New
- Service Overview
- Getting Started
-
User Guide
- Function Overview
- Permissions Management
-
Instance Management
- Buying a DDM Instance
- Splitting Read-only and Read-Write Services
- Changing Class of a DDM Node
- Scaling Out a DDM Instance
- Scaling In a DDM Instance
- Changing Billing Mode of a DDM Instance
- Renewing a DDM Instance
- Restarting a DDM Instance
- Unsubscribing from a DDM Instance
- Deleting a DDM Instance
- Modifying Parameters of a DDM Instance
- Splitting Read and Write Requests
- Configuring a Parameter Template
- Connection 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
- Shard Configuration
- Data Node Management
- Account Management
- Backups and Restorations
-
Data Migration
- Overview
- Migration Evaluation
- Scenario 1: Migrating Data from Huawei Cloud RDS to DDM
- Scenario 2: Migrating Data from an On-Premises RDS Instance for MySQL to DDM
- Scenario 3: Migrating Data from a Third-Party RDS for MySQL Instance to DDM
- Scenario 4: Migrating Data from a Self-Built MySQL Instance to DDM
- Scenario 5: Migrating Data from Heterogeneous Databases to DDM
- Scenario 6: Exporting Data from a DDM Instance
- Slow Queries
- Monitoring Management
- Auditing
-
SQL Syntax
- Introduction
- DDL
- DML
- Functions
- Use Constraints
- Supported SQL Statements
- Global Sequence
- Database Management Syntax
- Advanced SQL Functions
- Quotas
- Change History
-
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
- 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 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
- Schemas
- DDM Accounts
- Monitoring
-
DDM Instances
- APIs (Unavailable Soon)
- Appendix
- Change History
- 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
- 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?
- What Version and Parameters Should I Select?
- 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
- Connection Management
- Resource Freezing, Release, Deletion, and Unsubscription
- Change History
- Videos
Show all
Key Operations Recorded by CTS
Cloud Trace Service (CTS) records operations related to DDM for further query, audit, and backtrack.
Operation |
Resource Type |
Trace Name |
---|---|---|
Applying a parameter template |
parameterGroup |
applyParameterGroup |
Renewing a yearly/monthly DDM instance to changing the billing mode of a DDM instance from yearly/monthly to pay-per-use or from pay-per-use to yearly/monthly |
all |
bssArrearage |
Updating DDM metadata |
all |
bssUpdateMetadata |
Clearing metadata after a schema is scaled out |
logicDB |
cleanMigrateLogicDB |
Clearing user resources |
all |
cleanupUserAllResources |
Replicating a parameter template |
parameterGroup |
copyParameterGroup |
Creating a DDM instance |
instance |
createInstance |
Creating a schema |
logicDB |
createLogicDB |
Creating a parameter template |
parameterGroup |
createParameterGroup |
Creating an account |
user |
createUser |
Deleting a DDM instance |
instance |
deleteInstance |
Deleting a schema |
logicDB |
deleteLogicDB |
Deleting a parameter template |
parameterGroup |
deleteParameterGroup |
Deleting an account |
user |
deleteUser |
Scaling out a DDM instance |
instance |
enlargeNode |
Restarting a DDM instance |
instance |
instanceRestart |
Importing schema information |
instance |
loadMetadata |
Switching the route during scaling |
logicDB |
manualSwitchRoute |
Scaling out a schema |
logicDB |
migrateLogicDB |
Modifying a parameter template |
parameterGroup |
modifyParameterGroup |
Changing the route switching time |
logicDB |
modifyRouteSwitchTime |
Modifying an account |
user |
modifyUser |
Scaling in a DDM instance |
instance |
reduceNode |
Resetting a parameter template |
parameterGroup |
resetParameterGroup |
Resetting the password of an account |
user |
resetUserPassword |
Changing node class |
instance |
resizeFlavor |
Restoring DB instance data |
instance |
restoreInstance |
Retrying to scale out a schema |
logicDB |
retryMigrateLogicDB |
Rolling back the version upgrade of a DDM instance |
instance |
rollback |
Rolling back a schema scaling task |
logicDB |
rollbackMigrateLogicDB |
Configuring access control |
instance |
switchIpGroup |
Synchronizing data node information |
instance |
synRdsinfo |
Upgrading the version of a DDM Instance |
instance |
upgrade |
Adding a tag |
instance |
addTag |
Creating a node group |
group |
createGroup |
Modifying the floating IP address |
instance |
modifyIp |
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