Describe 企ろ伎れ^螳覈 here

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TABLESPACE  讌 螳ロ Extent   糾 覲 譟壱
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SELECT tablespace_name, total_extents, extents_coalesced,
percent_extents_coalesced
FROM dba_free_space_coalesced;

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TABLESPACE 螻糾 讌
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ALTER TABLESPACE tablespace覈 COALESCE;