If this option is not explicitly specified, DB2 by default USES two table parallelism (as if you have specified the paralleltable 2 option).
如果不显式地指定该选项,DB 2默认地使用两个表的并行度(parallel table 2选项)。
2
The paralleltable option tells the redistribute utility to perform parallelism at the table level where multiple tables are redistributed at the same time.