This appendix describes the IBM® WebSphere® Common Batch Container. z/OS® embeds this component, and supports a subset of its overall functionality. The IBM WebSphere Common Batch Container enables JES submission of the Transactional Batch programming model. This batch model is an XML-like policy driven control flow of looping business logic with defined input and output data streams. z/OS Resource Recovery Services (RRS) provides transaction support for z/OS data streams, such as DB2®, that support transactional behavior.

To use the z/OS Batch Runtime, you must build a set of Java™ class files corresponding to the described transactional batch job step interface and data streams, and submits these files as a traditional job step to the z/OS JES scheduler. As explained further in the following sections, there can be multiple and sequential transactional batch steps defined in a single JES job step. z/OS supports an inherently serial flow of these transactional batch steps.