Before you configure DirectConnect for Oracle, you should have a basic understanding of how the product works.
DirectConnect for Oracle accesses Oracle databases using the Oracle Call Interface (OCI) application programming interface (API). The OCI API allows DirectConnect for Oracle to manipulate data in an Oracle database.
DirectConnect for Oracle itself is built using the client/server paradigm. DirectConnect for Oracle is a Sybase Open Server application that provides the flexibility of a number of concurrent client connections that can be configured.
DirectConnect for Oracle communicates with Adaptive Server Enterprise using server class direct_connect.
The following diagram shows how DirectConnect for Oracle works with Adaptive Server Enterprise as a standalone gateway:
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