Managing Tablespaces - Oracle Help Center
https://docs.oracle.com/en/database/oracle/oracle-database/19/admin/managing-tablespaces.html
WEBUsing a tablespace group, rather than a single temporary tablespace, can alleviate problems caused where one tablespace is inadequate to hold the results of a sort, particularly on a table that has many partitions. A tablespace group enables parallel execution servers in a single parallel operation to use multiple temporary tablespaces.
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