Database Transmission Service
Database Transmission Service
Database Transmission Service
Document
What's new
Overview
Constraints and limits
Billing
Pre-check items
Permission management
Getting started
Quick start guide for data migration
Quick start guide for data subscription
Quick start guide for data synchronization
Data migration
Creating a data migration task for MySQL
Volcano Engine RDS for MySQL as the source
Volcano Engine veDB for MySQL as the source
MySQL connected over public network as the source
MySQL connected over express network as the source
Creating a data migration task for PostgreSQL
Volcano Engine RDS for PostgreSQL as the source
PostgreSQL connected over public network as the source
PostgreSQL connected over express network as the source
Creating a data migration task for SQL Server
Volcano Engine SQL Server as the source
SQL Server connected over public network as the source
SQL Server connected over express network as the source
Creating a data migration task for Redis
Volcano Engine Cache for Redis as the source
Redis connected over public network as the source
Redis connected over express network as the source
Creating a data migration task for MongDB
Volcano Engine Document Database for MongoDB as the source
MongoDB connected over public network as the source
MongoDB connected over express network as the source
Creating a data migration task for Supabase
Supabase connected over public network as the source
Supabase connected over express network as the source
Data subscription
Creating a data subscription task for MySQL
Creating a data subscription task for PostgreSQL
Consuming subscription data
Data synchronization
Creating a data synchronization task for MySQL
Volcano Engine RDS for MySQL as the source
Volcano Engine veDB for MySQL as the source
MySQL connected over public network as the source
MySQL connected over express network as the source
Creating a data synchronization task for Redis
Volcano Engine Cache for Redis as the source
Redis connected over public network as the source
Redis connected over express network as the source
Creating a data synchronization task for PostgreSQL
Volcano Engine RDS for PostgreSQL as the source
PostgreSQL connected over public network as the source
PostgreSQL connected over express network as the source
Creating a data synchronization task for MongoDB
Volcano Engine Database for MongoDB as the source
MongoDB connected over public network as the source
MongoDB connected over express network as the source
Creating a data synchronization task for Milvus
ETL task management
(Beta) Data verification
(Beta) Migration evaluation
Monitoring and alerts
Best practices
Data migration
Data subscription
API reference
Billing
Data transmission
Data subscription (consumer group management)
Data verification
Migration evaluation
Pre-check
Appendix
SDK reference
FAQs
Common general questions
Pre-check
Troubleshooting
- Documentation
Database Transmission ServicePre-check itemsPre-check items (Document Database for MongoDB)
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Pre-check items (Document Database for MongoDB)
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Database Transmission Service (DTS) performs various checks on databases before creating or configuring migration or synchronization tasks for Document Database for MongoDB. This topic introduces the details of check items.
Item | Database type | Check scope | Level | Check content | Remarks |
Existence check of source synchronization objects | Source database |
| Warning | Check whether the source synchronization objects exist. | None |
Environment detection. | None |
| Warning | Environment detection. | None |
Database connection and architecture wildcard rule check |
|
| Warning | Database and schema wildcard rule check. | None |
Source and target databases connectivity check |
|
| Error | Check whether the data transmission server can connect to the source database and the target database. | None |
Source database Oplog check | Source database |
| Error | Check whether the source database has enabled Oplog. | To perform incremental migration or synchronization, the source end must enable Oplog. |
Source database account privileges check | Source database |
| Warning | Check whether the source database's account privileges meet the requirements for migration or synchronization. | Replica set: Check if the account has serverStatus privileges during incremental migration or incremental synchronization. |
| |
| | | Sharded cluster: Check whether the account has listShards privileges during migration or synchronization. |
Database version check |
|
| Error | Check whether the database version of the source database or target database is Document Database for MongoDB 3.6 or later. | None |
Target database account privileges check | Target database |
| Error | Check whether the account privileges of the target database meet the requirements for migration or synchronization. | The target database account has the following privileges:
|
Primary node check | Target database |
| Error | When the Document Database for MongoDB database uses a replica set architecture, check whether the source address includes the primary node address. | None |
Architecture migration check |
|
| Warning | Check whether the architecture of the source database and the target database is compatible. | None |
Check the versions of the source and destination |
|
| Warning | Check whether the Document Database for MongoDB source and target versions are compatible. | None |
Source end mongos connection check | Source database |
| Warning | Check whether the source Document Database for MongoDB sharding address is correct. | None |
Destination mongos connection check | Target database |
| Warning | Check whether the target Document Database for MongoDB sharding address is correct. | None |
Check tables in the same instance and database on the source and target ends |
|
Unidirectional synchronization | Warning | Check whether the source and target ends are the same instance and database & table. | None |
Target collection existence | Target database |
| Warning | Check whether the target collection exists at the destination. |
|
Millisecond-level latency monitoring availability check | Source database | MongoDB to MongoDB synchronization | Error | Check the availability of millisecond-level latency monitoring for the source database. | If the pre-check fails, you might encounter the source database account lacking root, readWriteAnyDatabase, dbAdminAnyDatabase, and cloudAdmin privileges. If you encounter the above error messages, modify the corresponding issues based on the prompts. For detailed operations, refer to what to do if enabling millisecond-level latency monitoring pre-check fails?. |
Shard key consistency check |
|
| Warning | Check whether the shard key configuration of the source end and destination is consistent. | None |
Last updated: 2026.06.05 11:56:21
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