Extents in Indexes (19)
All extents allocated to an index segment remain allocated as long as the index exists.
When you drop the index or associated table or cluster, Oracle reclaims the extents for
other uses within the tablespace.
只要索引存在 , 索引段還保留著 . 刪除了索引對應的table or cluster後 ,
索引段可供表空間內其他使用者使用.
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