How to debug the data using peek stage in Data Stage
The Peek stage is a Development/Debug stage. It can have a single input link and any number of output links.
The Peek stage lets you print record column values either to the job log or to a separate output link as the stage copies records from its input data set to one or more output data sets. The Peek stage can be helpful for monitoring the progress of your application or to diagnose a bug in your application.