White paper on Spool Space in TeraData was presented by Me at Wipro where I work on Teradata presently. So first questions arises:
What is Spool Space in TeraData?
TERADATA Spool Space is unused Perm Space that it used for running queries. Spool Space is used to hold intermediate rows during processing, and to hold the rows in the answer set of a transaction.
TERADATA recommends 20% of the available perm space is allocated for Spool space but various across applications.