In Chapter 4, “Application Programming Guidelines” in the XA Interface Integration Guide for CICS, Encina, and TUXEDO, the introductory paragraph for the section, “Tightly coupled transactions,” has been revised. The new text is shown below in italics:
The XA environment treats each thread or process that works on a transaction as a transaction branch. Each transaction branch is assigned a different xid and works independently of the other branches. However, all branches are committed or rolled back as a unit. This applies to MTS/COM+ environments only, and only if you are using Client-Library™-based drivers that are older than version 3.6.
