1)How can handle the after job subroutine in the transformer stage?
ANS:In Transformer Stage click on properities tab in tool bar(Left corner tab). It displays stage properities page like all the other job properities page. There you can specify your before after stage subroutins.
2)What is DataStage parallel Extender ?
ANS1:its a new version of datastage called PX it process data using partion/collection methods (algorithms) it is very fast compare to older (server) version..partioning can be defined via Config file which stores no of nodes and resource pool information. there are various new stages added to PX version for example dataset, fileset, row generator, look up stage...and many morecheers,
ANS2:Parallel extender is that the parallel processing of data extraction and transformation application . there are two types of parallel processing 1) pipeline parallelism 2) partition parallelism