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Data Replication Service
Data Replication Service
- What's New
- Function Overview
-
Service Overview
- Infographics
- What Is DRS?
- Supported Databases
- Advantages
- Product Architecture and Function Principles
- Functions and Features
-
Mapping Data Types
- MySQL->PostgreSQL
- MySQL->GaussDB(DWS)
- MySQL->GaussDB
- MySQL->Oracle
- MySQL->CSS/ES
- Oracle->MySQL
- Oracle->GaussDB(for MySQL)
- Oracle->GaussDB
- Oracle->DDM
- Oracle->GaussDB(DWS)
- Oracle->PostgreSQL
- GaussDB(for MySQL)->Oracle
- GaussDB(for MySQL)->CSS/ES
- GaussDB->MySQL
- GaussDB->GaussDB(DWS)
- DB2 for LUW->GaussDB
- DB2 for LUW->GaussDB(DWS)
- PostgreSQL->GaussDB
- PostgreSQL->GaussDB(DWS)
- TiDB->GaussDB(for MySQL)
- Microsoft SQL Server->GaussDB(DWS)
- Microsoft SQL Server->GaussDB
- Specification Description
- Basic Concepts
- Billing
- Security Suggestions
- Accessing DRS
- Permissions Management
- Agency Management
- Security
- Compliance Description
- Related Services
- Change History
- Billing
- Preparations
-
Real-Time Migration
- Migration Overview
- To the Cloud
- Out of the Cloud
-
Task Management
- Creating a Migration Task
- Querying the Migration Progress
- Viewing Migration Logs
- Comparing Migration Items
- Managing Objects
-
Task Life Cycle
- Viewing Task Details
- Editing Migration Task Information
- Modifying Migration Information
- Editing a Migration Task
- Resuming a Migration Task
- Resetting a Migration Task
- Pausing a Migration Task
- Modifying the Flow Control Mode
- Stopping a Migration Task
- Deleting a Migration Task
- Cloning a Migration Task
- Task Statuses
- Tag Management
- Interconnecting with CTS
- Interconnecting with Cloud Eye
- Change History
- Backup Migration
-
Real-Time Synchronization
- Synchronization Overview
- Data Synchronization Topologies
-
To the Cloud
- From MySQL to MySQL
- From MySQL to PostgreSQL
- From MySQL to GaussDB Distributed
- From MySQL to GaussDB Primary/Standby
- From MySQL to GaussDB(DWS)
- From MySQL to GaussDB(for MySQL)
- From PostgreSQL to PostgreSQL
- From PostgreSQL to GaussDB(DWS)
- From PostgreSQL to GaussDB Primary/Standby
- From PostgreSQL to GaussDB Distributed
- From Oracle to MySQL
- From Oracle to GaussDB(for MySQL)
- From Oracle to GaussDB Primary/Standby
- From Oracle to GaussDB Distributed
- From Oracle to DDM
- From Oracle to GaussDB(DWS)
- From Oracle to PostgreSQL
- From DDM to MySQL
- From DDM to GaussDB(DWS)
- From DDM to DDM
- From DB2 for LUW to GaussDB Primary/Standby
- From DB2 for LUW to GaussDB Distributed
- From DB2 for LUW to GaussDB(DWS)
- From TiDB to GaussDB(for MySQL)
- From Microsoft SQL Server to GaussDB(DWS)
- From Microsoft SQL Server to GaussDB Primary/Standby
- From Microsoft SQL Server to GaussDB Distributed
- From Microsoft SQL Server to Microsoft SQL Server
- From MongoDB to DDS
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Out of the Cloud
- From MySQL to MySQL
- From MySQL to Kafka
- From MySQL to CSS/ES
- From MySQL to Oracle
- From DDM to MySQL
- From DDM to Oracle
- From DDM to Kafka
- From DDS to MongoDB
- From PostgreSQL to Kafka
- From GaussDB Distributed to MySQL
- From GaussDB Distributed to Oracle
- From GaussDB Distributed to GaussDB(DWS)
- From GaussDB Distributed to Kafka
- From GaussDB Distributed to GaussDB Distributed
- From GaussDB Distributed to GaussDB Primary/Standby
- From GaussDB Primary/Standby to MySQL
- From GaussDB Primary/Standby to Oracle
- From GaussDB Primary/Standby to Kafka
- From GaussDB Primary/Standby to GaussDB(DWS)
- From GaussDB Primary/Standby to GaussDB Distributed
- From GaussDB Primary/Standby to GaussDB Primary/Standby
- From GaussDB(for MySQL) to MySQL
- From GaussDB(for MySQL) to GaussDB(DWS)
- From GaussDB(for MySQL) to Kafka
- From GaussDB(for MySQL) to CSS/ES
- From GaussDB(for MySQL) to Oracle
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Between Self-built Databases
- From MySQL to Kafka
- From MySQL to CSS/ES
- From Oracle to Kafka
- From Oracle to GaussDB Primary/Standby
- From Oracle to GaussDB Distributed
- From PostgreSQL to Kafka
- From GaussDB Primary/Standby to Oracle
- From GaussDB Primary/Standby to Kafka
- From GaussDB Distributed to Oracle
- From GaussDB Distributed to Kafka
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Task Management
- Creating a Synchronization Task
- Querying the Synchronization Progress
- Viewing Synchronization Logs
- Comparing Synchronization Items
- Managing Objects
-
Task Life Cycle
- Viewing Task Details
- Modifying Task Information
- Modifying Connection Information
- Modifying the Flow Control Mode
- Editing a Synchronization Task
- Resuming a Synchronization Task
- Skipping Data and Resuming a Synchronization Task
- Pausing a Synchronization Task
- Resetting a Synchronization Task
- Skipping a Synchronization Task
- Performing a Primary/Standby Switchover
- Cloning a Synchronization Task
- Changing Specifications
- Unsubscribing from a Yearly/Monthly Task
- Stopping a Synchronization Task
- Deleting a Synchronization Task
- Task Statuses
- Tag Management
- Diagnosis of Abnormal Records
- Interconnecting with CTS
- Interconnecting with Cloud Eye
- Operation Reference in Synchronization Scenarios
- Change History
- Data Subscription
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Real-Time Disaster Recovery
- DR Overview
-
DR Scenarios
- From MySQL to MySQL (Single-Active DR)
- From MySQL to GaussDB(for MySQL) Primary/Standby (Single-Active DR)
- From DDM to DDM Single-Active DR
- From GaussDB(for MySQL) Primary/Standby to GaussDB(for MySQL) Primary/Standby (Single-Active DR)
- From MySQL to MySQL (Dual-Active DR)
- From GaussDB(for MySQL) Primary/Standby to GaussDB(for MySQL) Primary/Standby (Dual-Active DR)
- Task Management
- Tag Management
- Interconnecting with CTS
- Interconnecting with Cloud Eye
- Change History
-
Best Practices
- Best Practices Summary
- Real-Time Migration
- Backup Migration
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Real-Time Synchronization
- From Other Cloud PostgreSQL to RDS PostgreSQL
- From PostgreSQL on ECS to RDS PostgreSQL
- From On-Premises PostgreSQL to RDS PostgreSQL
- From RDS MySQL to Kafka
- Change History
- Security White Paper
-
API Reference
- Before You Start
- API Overview
- Calling APIs
- Getting Started
- APIs V3.0 (Recommended)
-
APIs V3.0 (Deprecated)
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Public API Management
- Creating Tasks in Batches
- Testing Connections in Batches
- Testing Connections in Batches (Cluster Mode)
- Modifying Tasks in Batches
- Selecting Database Objects in Batches
- Performing a Batch Pre-Check
- Querying Pre-check Results in Batches
- Setting Flow Control for Tasks
- Obtaining Database Parameters in Batches
- Modifying Database Parameters
- Starting Tasks in Batches
- Resuming or Retrying Tasks in Batches
- Pausing Tasks in Batches
- Stopping or Deleting Tasks in Batches
- Changing the Passwords of the Source and Destination Databases in Batches
- Setting Definers in Batches
- Creating a Comparison Task
- Querying Comparison Results
- Querying Tasks of a Tenant
- Querying Task Details in Batches
- Querying Task Statuses in Batches
- Configuring Exception Notifications
- Querying Available Node Specifications
- Querying Data-level Table Comparison Tasks
- Creating a Data-level Table Comparison Task
- Canceling a Comparison Task
- Immediately Starting a Data-level Table Comparison Task
- Querying the Row Comparison Overview
- Querying Row Comparison Details
- Querying the Value Comparison Overview
- Querying Value Comparison Details
- Querying Value Comparison Differences
- Creating an Object-level Comparison Task
- Querying the Overview of an Object Comparison Task
- Querying Details About an Object Comparison Task
- Exporting the Result File of a Comparison Task
- Downloading the Result File of a Comparison Task
- Real-Time Migration Management
- Real-Time Synchronization Management
- Real-Time Disaster Recovery Management
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Public API Management
- Application Examples
- Permissions Policies and Supported Actions
- Appendix
- Change History
-
FAQs
-
Product Consulting
- What Are Regions and AZs?
- What Is DRS?
- Can DRS Migrate RDS Primary/Standby Instances?
- What Constraints Does DRS Have for a Source Database?
- What Requirements Does DRS Have for a Destination Database?
- Does DRS Use Concurrency?
- Dose DRS Use Data Compression?
- Does DRS Support Migration Between the Public Cloud and the Dedicated Cloud?
- What Is the Quota?
- Does DRS Support Migration from DB2 for LUW to PostgreSQL?
- Can Microsoft SQL Server Database Synchronize Data with Local Databases in Real Time?
- Does DRS Support Data Replication in a Specified Time Period?
- Does DRS Support Resumable Uploads?
- What Is Single-Active/Dual-Active Disaster Recovery?
- What Are the Differences Between Real-Time Migration, Real-Time DR, and Real-Time Synchronization?
- How Do I Solve the Table Bloat Issue?
- How Do I Select RDS Read Replicas on the DRS Console?
- How Does DRS Affect the Source and Destination Databases?
- Do I Need to Stop Services Running on the Source Database?
- What Is an SMN Topic?
- What Are the Differences Between Primary/Standby and Single-Node Instances for DRS Synchronization Tasks?
- Can DRS Migrates Table Structures Only?
- How Do I Migrate Accounts in MySQL Migration, Synchronization, and DR Tasks and Can I Change Passwords?
- What Factors Affect the DRS Task Speed and How Do I Estimate the Time Required?
- Can I Modify Objects in a DRS Task?
- Does DRS Support Data Synchronization Between Different Databases of the Same DB Instance?
- Which Operations on the Source or Destination Database Affect the DRS Task Status?
- What Are Differences Between Data Subscription and Synchronization from MySQL to Kafka?
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Network and Security
- What Security Protection Policies Does DRS Have?
- What Can I Do If the Network Is Disconnected During the Migration?
- Which Database Accounts Are Required During Migration?
- How Can I Configure a VPC Security Group to Allow Traffic from an EIP?
- What Can I Do If the Network Connection Between the Replication Instance and Database Is Abnormal?
- How Can the Source and Destination Databases Communicate Across VPCs?
- What Is the EIP Bandwidth of DRS?
- Does DRS Support Cross-Account Cloud Database Migration?
- Permissions Management
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Real-Time Migration
- When Can I Stop a Migration Task?
- How Do I Maintain the Original Service User Permission System After Definer Is Forcibly Converted During MySQL Migration?
- What Can I Do If the Invoking Permission Problem Occurs After the MySQL Stored Procedure Is Migrated to the Cloud?
- How Do I Ensure that All Services on the Database Are Stopped?
- What Can I Do When Message "can not get agency token" Is Displayed in the Migration Log
- What Do I Do If the Maximum Index Length Has Been Reached During Migration from Oracle to MySQL?
- Why Is the Collation of Heterogeneous or Oracle Databases Converted to utf8mb4_bin After Those Databases Are Migrated to MySQL?
- What Can I Do If MyISAM Tables Are Not Supported by RDS for MySQL?
- What Are the Precautions for Migrating Data from an Earlier Version MySQL to MySQL 8.0?
- What Can I Do When OOM Occurs During the Migration of MongoDB Databases?
- How Do I Disable the Balancer?
- How Do I Export and Import Events and Triggers in Batches?
- How Can I Migrate Databases or Tables Whose Names Contain Uppercase Letters?
- How Do I Delete Orphaned Documents in MongoDB Sharded Clusters?
- Backup Migration
-
Real-Time Synchronization
- Can DRS Sync Tables of Different Schemas to the Same Schema?
- Can Online DDL Tools Be Used for Real-time Synchronization?
- How Do I Delete XStream Outbound Created When XStream Is Enabled?
- Why Do I Use the SCAN IP Address to Connect to an Oracle RAC Cluster?
- How Do I Check Supplemental Logging of the Source Oracle Database?
- Which Specifications Should I Select for My DRS Task to Synchronize Data to GaussDB(DWS)?
- Suggestions on Synchronizing Data to GaussDB(DWS)
- Character Set Compatibility Between Oracle and GaussDB
- Garbled Characters or Synchronization Failure Due to Incompatible Character Sets
- Data Subscription
-
Real-Time Disaster Recovery
- What Are RPO and RTO of DRS Disaster Recovery?
- How Do I Select Active Database 1 and 2 for Dual-Active DR?
- What Is the Meaning of Forward and Backward Subtasks in Dual-Active Disaster Recovery?
- Common Exceptions in Real-Time Disaster Recovery
- Is a Primary/Standby Switchover Triggered Automatically or Manually for DR Tasks?
- Can Real-Time DR Be Performed for Specified Databases?
- Why Does a Real-Time DR Task Not Support Triggers and Events?
- Data-Level Comparison
-
General Operations
- What Can I Do When Information Overlaps on the DRS Console?
- Is the Destination Instance Set to Read-only or Read/Write?
- How Do I Set Global binlog_format=ROW to Take Effect Immediately?
- How Do I Set binlog_row_image=FULL to Take Effect Immediately?
- How Do I Change the Destination Database Password to Meet the Password Policy?
- How Do I Configure the Shard Key for a MongoDB Sharded Cluster?
- Does Bandwidth Expansion Affect the Running DRS Tasks?
- Why Data in MariaDB and SysDB Cannot Be Migrated or Synchronized?
- Constraints and Operation Suggestions on Many-to-One Scenario
- Constraints and Operation Suggestions on One-to-Many Scenario
- Where Can I View DRS Operation Logs?
- Why Is a DRS Task Automatically Stopped?
- How Can I Export a DRS Task List?
- Can a Completed Task Be Restarted?
- What Are the Differences Between Resetting a Task and Recreating a Task?
- Does DRS Support Backward Migration/Synchronization?
- Why Cannot I Select an Existing SMN Topic?
- Can I Change an SMN Topic After a Task Is Created?
- Will Data of DRS Tasks Be Lost After a Primary/Standby Switchover Occurs on the Source MySQL Database?
- What Are the Differences Between All, Tables, and Databases During DRS Object Selection?
- What Do I Do After Changing the Password of the Source or Destination Database?
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Billing
- Do I Have to Pay For Failed Tasks?
- Do I Have to Pay For Paused Tasks?
- Will DRS Tasks That Are Not Started Be Billed?
- What Will Happen to My Tasks After The Yearly/monthly Subscription Expires?
- Will I Be Charged If I Do Not Delete a Task After It Is Completed?
- Resource Freezing, Release, Deletion, and Unsubscription
- Delay
- Change History
-
Product Consulting
-
Troubleshooting
-
Solutions to Failed Check Items
- Disk Space
-
Database Parameters
- Checking Whether the Source Database Binlog Is Enabled
- Checking Whether the Source Database Binlog Is Row-Based
- Checking Whether the Binlog Retention Period Is Set on the Source Database
- Checking Whether the Source and Destination Database Character Sets Are Consistent
- Checking Whether the Source Database server_id Meets the Incremental Migration Requirements
- Checking Whether the Source and Destination Database Table Names Are Consistent in Case Sensitivity
- Checking Whether the Source Database GTID Is Enabled
- Checking Whether the Source Database Contains Object Names with Non-ASCII Characters
- Checking Whether the Source and Destination Database TIME_ZONE Values Are Consistent
- Checking Whether the COLLATION_SERVER Values of the Source and Destination Databases Are the Same
- Checking Whether the SERVER_UUID Values of the Source and Destination Databases Are the Same
- Checking Whether the SERVER_ID Values of the Source and Destination Databases Are Different
- Checking Whether the Source Database Contains Invalid sql_mode Values
- Checking Whether the SQL_MODE Values of the Source and Destination Databases Are the Same
- Checking Whether the sql_mode Value in the Destination Database Is Not NO_ENGINE_SUBSTITUTION
- Checking Whether the innodb_strict_mode Values of the Source and Destination Databases Are the Same
- Checking Whether the max_wal_senders Value of the Source Database Is Correctly Configured
- Checking Whether the WAL_LEVEL Value in the Source Database Is Correct
- Checking Whether the MAX_REPLICATION_SLOTS Value in the Source Database Is Correct
- Checking Whether the Source Database Is on Standby
- Checking Whether the log_slave_updates Value of the Source Database Is Correctly Configured
- Checking Whether the BLOCK_SIZE Value of the Source Database Is the Same as That of the Destination Database
- Checking Whether the binlog_row_image Value is FULL
- Checking Whether the Transaction Isolation Levels are Consistent
- Checking Whether the lc_monetary Values of the Source and Destination Databases Are the Same
- Checking Whether the Source Database Contains Trigger Names with Non-ASCII Characters
- Checking Whether the Source Database Collections Contain More Than 10 Indexes
- Checking Whether the Source Database Collections Contain TTL Indexes
- Checking Whether log_bin_trust_function_creators Is Set to On in Both the Source and Destination Databases
- Checking Whether GTID Is Enabled for the Source Database
- Checking Whether GTID Is Enabled for the Destination Database
- Checking Whether log_bin_trust_function_creators Is Set to On in the Destination Database
- Checking Whether the Values in the Source Oracle Database Are Out of the Ranges of the MySQL Database
- Checking Whether the max_allowed_packet Value of the Destination Database Is too Small
- Checking Whether the Source Database User Has the Permission to Parse Logs
- Checking Whether the ExpireLogsDays Value Is 0
- Checking Whether the Source Database Character Set Is Supported
- Checking Whether the Length Table and Field Names Is Not Supported
- Checking Whether the Databases and Tables Exist
- Checking Whether the Supplemental Log Level of the Source Database Meets Requirements
- Checking Whether the Length of the Source Database Object Names Exceeds the Limit
- Checking Whether session_replication_role of the Destination Database Is correctly Set
- Checking the Database Compatibility Type
- Checking Whether the Collation of the Destination Database Is Correct
- Checking Whether the Source Database Has the Permission to Parse OGG Logs
- Checking Whether the Index Name Is Supported
- Checking Whether Tables Structures Are Consistent
- Checking Whether Existing Data Meets the Constraints
- Checking the Additional Column of the Destination Database
- Checking Whether Implicit Primary Key Check Is Enabled for the Primary and Standby Databases
- Checking Whether the Source Table Replication Attribute Is Correct
- Checking Whether the Source Database Is on Standby
- Checking Whether the Specified Replication Slot Exists in the Source Database
- Checking Whether the MongoDB Instance Type Matches the Migration Mode
- Checking the Physical Standby Database
- Source DB Instance Statuses
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Destination DB Instance Statuses
- Checking Whether the Destination Database Is Involved in Another Migration Task
- Checking Whether the Destination Database Has a Read Replica
- Checking Whether the Destination Database Is Read-Only
- Checking Whether the Extensions Are Supported
- Checking Whether Destination Contains the Configured Database
- Checking Whether the Destination DB Instance Is Available
- Checking Whether the Destination Database Is Empty
- Database User Permissions
- Database Versions
- Networks
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Database Objects
- Checking Whether the Source Database Contains a MyISAM Table
- Checking Whether the Source Database Contains Unsupported Table Field Types
- Checking Whether the Source Database Contains the Functions or Stored Procedures that the Source Database User Is Not Authorized to Migrate
- Checking Whether Objects with the Same Names Exist in the Source Database
- Checking Whether the Source Database Contains Unlogged Tables
- Checking Whether the Names of Views to Be Migrated Are the Same
- Checking Whether the _Id Fields in the Collection of the Source Database Have Indexes
- Checking Whether the Index Length of the Source Database Exceeds the Limit
- Checking Whether the Source Database Tables Use Storage Engines Not Supported by the Destination Database
- Checking Whether the Database Names Mapped to the Destination DB Instance Contain Unsupported Characters
- Checking Whether the Source Database Tables Contain Primary Keys
- Checking Whether the Source Database Contains Triggers or Events
- Checking Whether the Source Database Referenced Roles Pass the Check
- Checking Whether the Source Database Referenced Accounts Pass the Check
- Checking Database Mapping Objects
- Checking Whether Associated Objects Are Selected
- Checking Whether the Specified Objects Exist In the Destination Database
- Checking Whether the Source Table Contains Column Types that Cannot Be Used as Distribution Keys
- Checking Whether the Source Table Contains Unsupported Table Field Types
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Database Configuration Items
- Checking Whether the Source Database Name Is Valid
- Checking Whether the Source Database Table Name Is Valid
- Checking Whether the Source Database View Name Is Valid
- Checking Whether the Source Database Collection Name Is Valid
- Checking Whether the Shard Key Can Be Obtained from the Source Database
- Checking Whether the Source Database Schema Name Is Valid
- Checking Whether the Maximum Number of Chunks in the Destination Database Is Sufficient
- Checking Whether Archive Logs Are Enabled on the Source Oracle Database
- Checking Whether Supplemental Logging of the Source Oracle Database Meets Requirements
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Conflicts
- Checking Whether the Names of the Source and Destination Databases Are the Same
- Checking Whether the Same View Names Exist in Both the Source and Destination Databases
- Checking Whether the Destination Database Contains a Non-Empty Collection with the Same Name As the Source Database
- Checking Whether Destination Database Contains the Same Table Names As the Synchronization Objects
- Checking Whether the Destination Database Contains Objects with the Same Name As Those in the Source Database
- Checking Whether Collections in Both the Source and Destination Databases Are Not Capped
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SSL Connections
- Checking Whether the SSL Connection Is Correctly Configured
- Checking Whether the SSL Connection Is Enabled for the Source Database
- Checking Whether the SSL Certificate of the Source Database Exists
- Checking Whether the SSL Certificate of the Destination Database Exists
- Checking Whether Both the Source and Destination Databases Use SSL
- Object Dependencies
- Source Database Information
-
Failure Cases
- Case Overview
-
Real-Time Migration from MongoDB to DDS
- Full Migration Error: Prematurely reached end of stream
- Full Migration Error: not authorized on riskevaluation to execute command {***}
- Full Migration Error: GC overhead limit exceeded
- Full Migration Error: The background process is unavailable. Maybe it has been killed manually or by the operating system. Please restart the task if possible or wait for restarting by itself within 5 minutes."
- Full Migration Error: Timed out after 60000 ms while waiting to connect
- Full or Incremental Migration Error: Timed out after 60000 ms while waiting to connect
- Full or Incremental Migration Error: Invalid BSON field name XXX
- Incremental Migration Error: Timed out after 60000 ms while waiting for a server that matches com.mongodb.client.internal
- Incremental Migration Error: Command failed with error *** (***):***. The full response is {***}"
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Real-Time Migration and Synchronization from MySQL to MySQL
- Full Phase Error: Table '%.%' doesn't exist
- Full Phase Error: The background process is unavailable
- Full Phase Error: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
- Full Phase Error: Error writing file '***' (errno: 28 - No space left on device)
- Full Phase Error: The MySQL server is running with the --super-read-only option so it cannot execute this statement
- Full Phase Error: The table 't_diary_mem_font' is full
- Full Phase Error: Unknown column '%s' in 'field list'
- Full Phase Error: Lock wait timeout exceeded; try restarting transaction
- Full Phase Error: Java heap space
- Full Phase Error: Table '%s ' already exists
- Full Phase Error: temp table: %s.%s not exist
- Full Phase Error: failed to create new session
- Full Phase Error: load table: `%s`.`%s` failed
- Full Phase Error: read table=`%s`.`%s` failed
- Full Phase Error: CANNOT UPDATE USER WITH NULL PASSWORD
- Full Phase Error: Access denied for user '***' to database '***'
- Full Phase Error: The MySQL server is running with the --super-read-only option so it cannot execute this statement
- Full Phase Error: Temporary file write failure.
- Full Phase Error: Incorrect prefix key; the used key part isn't a string, the used length is longer than the key part, or the storage engine doesn't support unique prefix keys
- Full Phase Error: Unknown database '%s'
- Full Phase Error: Access denied; you need (at least one of) the SUPER privilege(s) for this operation
- Full Phase Error: retry structures failed events and Table '%s.%s' doesn't exist
- Full Phase Error: shard table=`%s`.`%s` failed
- Full Phase Error: Column name 'AUTO_PK_ROW_ID' is reserved.
- Full Phase Error: transfer account failed, can not find password from src DB
- Full Phase Error: Access denied for user %s
- Full or Incremental Phase Error: binlog is not existed
- Full or Incremental Phase Error: Can not read response from server
- Full or Incremental Phase Error: Communications link failure
- Full or Incremental Phase Error: EOF Packet received, master disconnected
- Full or Incremental Phase Error: Extract db create sql failed
- Full or Incremental Phase Error: load table
- Full or Incremental Phase Error: Reached end of input stream
- Full or Incremental Phase Error: Read timed out
- Full or Incremental Phase Error: The background process is unavailable
- Full or Incremental Phase Error: Duplicate entry '%s' for key 'PRIMARY'
- Full or Incremental Phase Error: cause by: Index: %s, Size: %s
- Full or Incremental Phase Error: The offset and file name between src and parser is inconsistency
- Full or Incremental Phase Error: core process is not healthy or crashed
- Full or Incremental Phase Error: table info of table `%s`.`%s` from metadata miss
- Full or Incremental Phase Error: table[%s.%s]record field size for insert/delete dml
- Incremental Phase Error: write table %s.%s failed: Duplicate entry '%s' for key 'PRIMARY'
- Incremental Phase Error: not equals to target db column count
- Incremental Phase Error: The MySQL server is running with the --super-read-only option
- Incremental Phase Error: you need (at least one of) the SUPER privilege(s) for this operation
- Incremental Phase Error: Can't DROP '%s'; check that column/key exists
- Incremental Phase Error: Can't find file: '%s' (errno: 2 - No such file or directory)
- Incremental Phase Error: Data truncation: Data too long for column
- Incremental Phase Error: Failed to read file header from
- Incremental Phase Error: Lock wait timeout exceeded
- Incremental Phase Error: Must seek before attempting to read next event
- Incremental Phase Error: Table '%s' already exists
- Incremental Phase Error: Table '%s' doesn't exist
- Incremental Phase Error: Table %s not found in database
- Incremental Phase Error: source has more columns than target
- Incremental Phase Error: Unknown storage engine
- Incremental Phase Error: Unknown table
- Incremental Phase Error: You have an error in your SQL syntax
- Incremental Phase Error: not illegal for mariaDb gtid position
- Incremental Phase Error: without PK execute failed
- Incremental Phase Error: Deadlock found when trying to get lock
- Incremental Phase Error: current serverUUID not equals to this session
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Real-time Synchronization from MySQL to GaussDB(DWS)
- Full Synchronization Error: Table %s.%s not found in database
- Full Synchronization Error: column 'database_table' of relation '%s' does not exist
- Full Synchronization Error: value too long for type character varying
- Full Synchronization Error: int1 has not implemented
- Full Synchronization Error: column name 'tid' conflicts with a system column name
- Full Synchronization Error: date/time field value out of range
- Full or Incremental Synchronization Error: service LOGMANAGER failed
- Full or Incremental Synchronization Error: service CAPTURER failed
- Full or Incremental Synchronization Error: ERROR: pooler
- Incremental Synchronization Error: dn_%s_%s: column '%s' contains null values
- Incremental Synchronization Error: source has more columns than target
- Incremental Synchronization Errors: Connection to *.*.*.98:8000 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections
- Incremental Synchronization Error: Table %s not found in target database
- Incremental Synchronization Error: in a read-only transaction
- Incremental Synchronization Error: relation '%s' does not exist
- Incremental Synchronization Error: %s doesn't in the target table
- Incremental Synchronization Error: %s doesn't in the target table
- Incremental Synchronization Error: syntax error at or near
- Incremental Synchronization Error: schema '%s' does not exist
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Real-Time Synchronization from PostgreSQL to PostgreSQL
- Full Synchronization Error: function uuid_generate_v4() does not exist
- Full Synchronization Error: relation '%s' does not exist
- Full Synchronization Error: GC overhead limit exceeded
- Full Synchronization Error: Java heap space
- Full Synchronization Error: column '%s' of relation '%s' does not exist
- Full Synchronization Error: column '%s' does not exist
- Full Synchronization Error: type 'hstore' does not exist
- Full Synchronization Error: Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections
- Full Synchronization Error: invalid locale name
- Incremental Synchronization Error: Table %s not found in target database
- Incremental Synchronization Error: remaining connection slots are reserved
- Incremental Synchronization Error: PL/pgSQL function %s line %s at SQL statement
- Backup Migration Failed Because Backup Files Cannot Be Found
- Backup Migration Failed Because a Backup Database Cannot Be Found in the Backup Files
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Solutions to Failed Check Items
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Full Phase Error: read table=`%s`.`%s` failed
Full Phase Error: read table=`%s`.`%s` failed
Updated on 2022-09-21 GMT+08:00
Scenarios
During a full migration or synchronization, an error is reported, and the log information is as follows: service DATAMOVE failed, cause by: read table=` %s`.` %s` failed.
Possible Causes
The possible causes are as follows:
- Failed to read table data from the source database due to poor source database performance or unstable network connection.
Solution
Contact Huawei technical support to adjust the timeout interval for accessing the source database.
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