Some Replication Agents cannot access the native transaction log of a primary database to acquire the information necessary to replicate transactions.
Sybase Replication Agent (for Microsoft SQL Server and Oracle) uses its own proprietary transaction log to capture and record transactions in the primary database for replication. Sybase Replication Agent generates SQL scripts that run in the primary database to create the Replication Agent transaction log. See the Replication Agent Administration Guide Volume 1 for more information about the Replication Agent transaction log.