Data source support
AT mode
Databases supported by AT mode include: MySQL, Oracle, PostgreSQL, TiDB, and MariaDB.
TCC mode
TCC mode does not rely on data sources (for version 1.4.2 and before). After version 1.4.2, TCC anti-hanging measures are added, which requires data source support.
Saga Mode
Saga mode does not rely on data sources.
XA mode
XA mode only supports databases that implement the XA protocol. Seata supports MySQL, Oracle, PostgreSQL and MariaDB.