Parallel Query in RAC
Syed Jaffar Hussain, Tariq Farooq, Riyaj Shamsudeen, Kai Yu · Apress eBooks · 2013
Parallel Execution (PX) is a powerful feature that makes it possible to utilize numerous processes to process millions, if not billions, of rows. In RAC, multiple nodes can be employed to execute a single SQL statement if the data set processed by a single SQL statement is huge. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.