Adabas Parallel Services allows you to use multiple images of the Adabas server within a single operating system image, in order to provide improved scalability. The cluster of Adabas servers can take part in distributed transaction processing, under the control of Adabas Transaction Manager. This is controlled by the ADARUN DTP parameter, in the same way as for a standard Adabas nucleus. The same value must be specified for the DTP parameter for every nucleus in the Parallel Services cluster.