1 Overview of WLEC to Oracle WebLogic Tuxedo Connector Migration

The following sections provide an overview of the requirements and procedures to migrate WLEC applications to the Oracle WebLogic Tuxedo Connector:

Guide to this Document
Overview
Prerequisites
Comparing Oracle WebLogic Tuxedo Connector and WLEC Functionality
Key Differences Between WLEC and Oracle WebLogic Tuxedo Connector

Guide to this Document

This document introduces the Oracle WebLogic Tuxedo Connector application development environment. This document provides information on how to migrate WLEC applications to use the Oracle WebLogic Tuxedo Connector to interoperate between Oracle WebLogic Server and Oracle Tuxedo.

The document is organized as follows:

This chapter, Chapter 1, "Overview of WLEC to Oracle WebLogic Tuxedo Connector Migration," provides information on migration prerequisites, functionality, and key administrative and programming differences between WLEC to Oracle WebLogic Tuxedo Connector.
Chapter 2, "How to Modify WLEC Applications for Oracle WebLogic Tuxedo Connector," provides information about how to modify your Tuxedo environment, your Oracle WebLogic Server environment, and your WLEC applications for use with the Oracle WebLogic Tuxedo Connector.
Chapter 3, "How to Modify the Tuxedo CORBA Simpapp Example," provides an example of how to convert a WLEC application so that it can use Oracle WebLogic Tuxedo Connector.

Overview

WLEC is a deprecated service in WebLogic Server 8.1. WLEC users should begin plans to migrate applications using WLEC to the Oracle WebLogic Tuxedo Connector.

Oracle WebLogic Tuxedo Connector provides bi-directional interoperability between WebLogic Server applications and Tuxedo services. The connector allows WebLogic Server clients to invoke Tuxedo services and Tuxedo clients to invoke WebLogic Server Enterprise Java Beans (EJBs) in response to a service request.

WLEC to Oracle WebLogic Tuxedo Connector migration requires minor application modification:

WLEC applications require modification of the portions of application code that use or call environmental objects.
Existing CORBA C++ server objects do not require server application changes.

Prerequisites

Before you can start migrating your WLEC applications to Oracle WebLogic Tuxedo Connector, make sure that you have installed:

Tuxedo

If necessary, migrate your Tuxedo applications to Tuxedo 8.1 or later. For more information, see:
- Upgrading the Tuxedo System to Release 8.1 at http://e-docs.bea.com/tuxedo/tux81/install/insup.htm
- Upgrading the Tuxedo System to Release 9.0 located at http://e-docs.bea.com/tuxedo/tux90/install/insup.htm
WebLogic Server

If necessary, migrate your WebLogic Server installation to WebLogic Server 9.2. For more information, see Oracle Fusion Middleware Upgrade Guide for Oracle WebLogic Server.

Comparing Oracle WebLogic Tuxedo Connector and WLEC Functionality

Table 1-1 compares the supported functionality in Oracle WebLogic Tuxedo Connector and WLEC:

Table 1-1 Oracle WebLogic Tuxedo Connector and WLEC Functionality

Feature	WTC	WLEC
Outbound ATMI interoperability from WLS	Yes	No
Inbound ATMI interoperability from Tuxedo	Yes	No
Outbound CORBA interoperability	Yes	Yes
Inbound CORBA interoperability	Yes	No
Supports Tuxedo Buffers	Yes	No
Bi-directional security context propagation	Yes	No
Bi-directional transaction propagation	Yes	No
Bi-directional bridge between JMS and /Q or Tuxedo services	Yes	No
Conversations	Yes	No
VIEWS	Yes	No

Key Differences Between WLEC and Oracle WebLogic Tuxedo Connector

Table 1-2 provides information on key administration, configuration, and programming differences between Oracle WebLogic Tuxedo Connector and WLEC.

Table 1-2 WLEC and Oracle WebLogic Tuxedo Connector Key Differences

Description	Oracle WebLogic Tuxedo Connector	WLEC
Connectivity	Uses the Tuxedo /T Domain gateway. The gateway creates a single network link between a WebLogic Server instance and a Tuxedo domain for all method invocations.	Uses a pool of connections and each invocation is sent over a connection obtained from this pool.
Failover Management	Uses Tuxedo domains.	Uses a failover list.
Object Routing	CORBA calls from WebLogic Server applications are propagated to the Tuxedo CORBA environment using the TGIOP/TDOMAINS protocol.	CORBA calls from WebLogic Server applications are propagated over IIOP connection pools using the CORBA API.

New and Changed Features

For a comprehensive listing of the new WebLogic Server features introduced in this release, see Oracle Fusion Middleware What's New in Oracle WebLogic Server.