Abstract: A method and a system for converting and replicating data stored in a source database into target database without a load of the source database due to a replication operation. The system includes a first operating server for the source database, a second operating server for the target database, and a replication server extracting a structured query language (SQL) transmitted from a client to the source database in a network stream transmitted from a client to the first operating server and transmit the converted data structure to the second operating server, thereby synchronizing the source database with a replication database.