Delete with extent returning to the tablespace

When I delete all the rows from the table I can use:
'truncate table mytable drop storage'
and the extents are returned to the tablespace that table resides in.
Is something like this possible with the delete statement? If not - or if I just didn't use it - when the delete makes many extents empty, does Oracle automatically reclaim them?
Thx.

>>
when the delete makes many extents empty, does Oracle automatically reclaim them?
<<
Inserts into the table can and will refill the empty blocks given enough activity and over time but even if every block in an extent is empty Oracle does not release the extent back to the tablespace as freespace at least through 10g.
If you need to release the extents to the tablepsace for reuse due to space requirements then you would need to reorganize the table and its indexes. The alter table move statement can be used if enough free space exists in the tablespace to support the operation or exp/truncate/imp ignore=y can be used.
The question is how much space would be freed? How badly do you need it for other objects? And how long before the table would need to re-extend if you take the space away (or how long before the table would reuse the extents)?
You do not want to perform reorganizations just to do them. There needs to be a real benefit to yourself or your application from the work.
HTH -- Mark D Powell --

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