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Function Limitations

When you pause a migration task, the synchronization of the table that is being synchronized will not stop until the synchronization finishes or fails. When you restart the migration task, the tables that have been already synchronized will not be migrated again.
To maximize performance, DTS automatically assigns migration tasks to the availability zone or region of the target database.
To view the monitoring information of migration tasks, use the Ping An Cloud Argus service or log in to the DTS console to view logs.
When a migration task fails, it cannot automatically restart. You can view the failure log, troubleshoot the issue, and then manually restart the task.
As a best practice, make sure the number of tables in a migration task does not exceed 1000.

Structure Migration Limitations

Source database	Target database	Table structures	Views	Functions	Stored procedures
MySQL	MySQL	Supported	Supported	Supported	Supported
MySQL	PostgreSQL	Supported	Not supported	Not supported	Not supported
PostgreSQL	PostgreSQL	Supported	Supported	Supported	Supported
PostgreSQL	MySQL	Supported	Not supported	Not supported	Not supported

Field Type Limitations in Structure Migration

Structure migration does not support migrating the following field types:

Database types	Unsupported field types
MySQL	BIT
	LONGTEXT
	POINT
	LINESTRING
	POLYGON
	LINESTRING
PostgreSQL	XML
	JSON
	TSVECTOR
	TSQUERY
	ARRAY
	POINT
	LINE
	LSEG
	BOX
	PATH
	POLYGON
	CIRCLE
	TXID_SNAPSHOT
	CIDR
	INET
	MACADDR
	BIT
	OID
	MONEY
	INTERVAL

Region Limitations

The following table lists the region support information for Ping An Cloud DTS data migration when both the source and target databases are RDS databases:

Source database regions	Target database regions	Whether data migration is supported
East China	East China	Supported
	South China	Supported
	Hong Kong	Not supported
South China	South China	Supported
	East China	Supported
	Hong Kong	Not supported
Hong Kong	Hong Kong	Supported
	East China	Not supported
	South China	Not supported

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