Case Overview

**Table 1** Overview
Data Flow	Related Documents
Real-Time Migration from MongoDB to DDS	Full Migration Error: Prematurely reached end of stream
	Full Migration Error: not authorized on * 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 ***
	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 {*}"
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 *** is full
	Full Phase Error: Unknown column *** in 'field list'
	Full Phase Error: Lock wait timeout exceeded; try restarting transaction
	Full Phase Error: Java heap space
	Full Phase Error: Table *** already exists
	Full Phase Error: temp table: *** not exist
	Full Phase Error: failed to create new session
	Full Phase Error: load table: *** failed
	Full Phase Error: extract table structure failed!
	Full Phase Error: read table=*** 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 ***
	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 *** doesn't exist
	Full Phase Error: shard table=*** failed
	Full Phase Error: error when split table shard occur!
	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: Failed to add the foreign key constraint '***' to system tables
	Full Phase Error: Too many keys specified; max 64 keys allowed
	Full Phase Error: Unknown collation: 'utf8mb4_0900_ai_ci'
	Full or Incremental Phase Error: Access denied for user ***
	Full or Incremental Phase Error: binlog is not existed
	Full or Incremental Phase Error: database log download failed
	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 database structure failed in source database
	Full or Incremental Phase Error: load table: *** failed
	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 *** for key 'PRIMARY'
	Full or Incremental Phase Error: cause by: Index: *, Size: *
	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 `***` from metadata miss
	Full or Incremental Phase Error: binlog parse fail, data dictionary may be not complete!
	Full or Incremental Phase Error: table *** record field size for insert/delete dml
	Full or Incremental Phase Error: service * failed, cause by: Unable to connect to DBMS: *
	Full or Incremental Phase Error: The binlog fetch connection may be interrupted
	Full or Incremental Phase Error: Received error packet: errno - 1047, solstate - HY000 errmsg = Unknown command
	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 ***; check that column/key exists
	Incremental Phase Error: Can't find file: *** (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 *** already exists
	Incremental Phase Error: Table *** doesn't exist
	Incremental Phase Error: Table *** 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
Incremental Phase Error: Slave has more GTIDs than the master has, using the master's SERVER_UUID.
Incremental Phase Error: Operation not allowed when innodb_force_recovery > 0
Incremental Phase Error: filter data in config condition filter error
Real-Time Migration and Synchronization from MySQL to GaussDB(for MySQL)	Full or Incremental Phase Error: Illegal mix of collations (utf8mb4_0900_ai_ci,IMPLICIT) and (utf8mb4_general_ci,IMPLICIT) for operation
Real-Time Synchronization from MySQL to GaussDB(DWS)	Full Synchronization Error: Table *** not found in database
	Full Synchronization Error: column 'database_table' of relation *** 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
	Full or Incremental Phase Error: service * failed, cause by: Unable to connect to DBMS: *
	Full or Incremental Phase Error: The binlog fetch connection may be interrupted
	Incremental Synchronization Error: dn_*: column * 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 *** not found in target database
	Incremental Synchronization Error: in a read-only transaction
	Incremental Synchronization Error: relation *** does not exist
	Incremental Synchronization Error: *** doesn't in the target table
	Incremental Synchronization Error: syntax error at or near
	Incremental Synchronization Error: schema *** does not exist
	Incremental Synchronization Error: Check whether dws supports the DDL
	Incremental Synchronization Error: PL/pgSQL function * line * at SQL statement
Real-Time Synchronization from MySQL to CSS/ES	Incremental Synchronization Error: write table *** failed: null
Real-Time Synchronization from PostgreSQL to PostgreSQL	Full Synchronization Error: function *** does not exist
	Full Synchronization Error: relation *** does not exist
	Full Synchronization Error: GC overhead limit exceeded
	Full Synchronization Error: Java heap space
	Full Synchronization Error: column * of relation * does not exist
	Full Synchronization Error: column *** does not exist
	Full Synchronization Error: type 'hstore' does not exist
	Full Synchronization Error: type 'geometry' 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
	Full Synchronization Error: password must not equal user name
	Full Synchronization Error: permission denied for schema ***
	Full or Incremental Phase Error: service * failed, cause by: Unable to connect to DBMS: *
	Full or Incremental Phase Error: Initialize logical replication stream failed, the source database may have a long transaction
	Full or Incremental Phase Error: memory required is * MB, maintenance_work_mem is * MB
	Full or Incremental Phase Error: temporary file size exceeds temp_file_limit
	Incremental Synchronization Error: Table *** not found in target database
	Incremental Synchronization Error: remaining connection slots are reserved
	Incremental Synchronization Error: PL/pgSQL function * line * at SQL statement
Real-Time Synchronization with Oracle Serving as the Source	Full Synchronization Error: has date/datetime: *** which is outside of dest allowed range
	Full or Incremental Phase Error: Got minus one from a read call
	Incremental Synchronization Error: Source supplemental log level is PK/UI. Missing column data at delete+insert on ***"
	Incremental Synchronization Error: timeout when get next file log, maybe has been deleted, please check it.
	Incremental Synchronization Error: Failed to construct kafka producer.
	Incremental Synchronization Error: Topic *** not present in metadata after 300000 ms
Real-Time DR with MySQL Serving as the Source	DR Error: A dml without pk write target db fail
Backup Migration	Backup Migration Failed Because Backup Files Cannot Be Found
	Backup Migration Failed Because a Backup Database Cannot Be Found in the Backup Files
	Backup Migration Failed Because the Database with the Same Name Already Exists
	Backup Migration Failed Because an Incremental Backup File Is Used
	Backup Migration Failed Because an Log Backup File Is Used
	Backup Migration Failed Because the Backup File Verification Failed
	Backup Migration Failed Because of Insufficient Space
	Backup Migration Failed Because Database Names Are Not Specified
	Backup Migration Failed Because a Full Backup File Is Used
	Backup Migration Failed Because the LSNs of Incremental Backup Files Are Inconsecutive
	Backup Migration Failed Because the Number of Databases to Be Restored Exceeds the Destination Database Threshold
Traffic Replay	Parsing Failed, and a Message Is Displayed Indicating That the OBS Connection Failed
Data-Level Comparison	Data-Level Comparison Error: service SDV failed! cause by: the size of records in one shard[ *** ] of target database, exceeds the max size 200000