Attaching or detaching fragments

You can use ALTER FRAGMENT ATTACH and DETACH statements to perform data warehouse-type operations. ALTER FRAGMENT DETACH provides a way to delete a segment of the table data rapidly. Similarly, ALTER FRAGMENT ATTACH provides a way to load large amounts of data into an existing table incrementally by taking advantage of the fragmentation technology.

For more information about how to take advantage of the performance enhancements for the ATTACH and DETACH options of the ALTER FRAGMENT statement, see Improve the performance of operations that attach and detach fragments.


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