Pipes are bidirectional interprocess communication mechanisms on UNIX, Linux, and Windows systems. They provide input and output file structures accessed by different applications and processes on a first‑in‑first‑out (FIFO) basis.
Using pipes, instead of disk or tape files, provides a substantial performance improvement for data transfer operations between two complementary data extract and load utilities, such as FastExport, FastLoad, and TPump. However, standard pipe mechanisms do not support checkpoint and restart functions because FIFO file structures are not cached, leaving them no way to revert to an earlier position after a system failure or restart. The Teradata Named Pipes Access Module caches pipe output data stream in a fallback data file that supports checkpoint and restart functions and provides quick, easy recovery from the following:
Note: The Teradata Named Pipes Access Module does not support checkpoint or restart operations on the source database.
You can use the Teradata Named Pipes Access Module a variety of ways: