Compaq AAR-88LB-TE Running Version 2 Applications, Comparison of OpenVMS API and Portable API

6

Running Version 2 Applications

In this chapter the term OpenVMS API refers to the Reliable Transaction Router for OpenVMS Version 2. The term Portable API refers to the API used in Reliable Transaction Router for OpenVMS Version 3.

With RTR Version 3, the Portable API provides:

•Portability over a wide range of language and machine environments

•Simplified handling of concurrency, independent of the type of operating system

•Support for communication between machines with different hardware representations of common data types

•Interoperability with existing applications that use the OpenVMS API

•Improved performance for commonly used transaction types

•Support for use within a threaded environment

•Support for foreign protocols such as XA and Microsoft DTC, with nested or subtransaction transaction capability

6.1Comparison of OpenVMS API and Portable API

Table 6–1 lists the OpenVMS API and comparable Portable API calls.

Running Version 2 Applications 6–1