查看錶空間使用狀況

SELECT D.TABLESPACE_NAME,         SPACE || 'M' "SUM_SPACE(M)",         BLOCKS "SUM_BLOCKS",         SPACE - NVL (FREE_SPACE, 0) || 'M' "USED_SPACE(M)",         ROUND ( (1 - NVL (FREE_SPACE, 0) / SPACE

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