Replication Server updates the replicate data stored in databases by submitting requests to data servers. Support for Adaptive Server is provided with Replication Server. If your database is managed by a data server other than Adaptive Server, you must provide an interface for Replication Server to use.
This interface includes:
An Open Server gateway application to receive instructions from Replication Server and apply them to the data server.
A maintenance account that Replication Server can use to log in to the gateway.
A function-string class to use with the database. The function strings in the class tell Replication Server how to format requests for the data server.
An error class and error action assignments to handle errors the data server returns to Replication Server via the gateway.
An rs_lastcommit table in each database that has replicated data. Replication Server uses this table to keep track of the transactions that have been successfully committed in the database.
An rs_get_lastcommit function call to retrieve the last transaction from each source primary database.
Sybase offers several Open Server gateway application products that you can use to access non-Sybase database servers for a replicate database.
The heterogeneous datatype support (HDS) feature in Replication Server provides several components of this interface for supported database servers (DB2, Informix, Microsoft SQL Server, and Oracle). The HDS feature provides function string classes, error classes, and scripts to create the necessary tables and procedures in the replicate database.
See the Replication Server Administration Guide Volume 1 and the Replication Server Configuration Guide for your platform for more information about the HDS feature.
