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This article mainly explains "Oracle10g delete data file command", the explanation content in the article is simple and clear, easy to learn and understand, please follow the small series of ideas slowly in-depth, together to study and learn "Oracle10g delete data file command" bar!

1. Check if the data file is empty (only empty data files can be deleted)

SELECT E.SEGMENT_TYPE AS SEGMENT_TYPE

, E.SEGMENT_NAME AS SEGMENT_NAME

, F.FILE_NAME AS FILE_NAME

, SUM(E.BYTES)/1024/1024 AS SEGMENT_SIZE

FROM DBA_EXTENTS E

INNER JOIN DBA_DATA_FILES F ON E.FILE_ID= F.FILE_ID

WHERE F.FILE_ID =

GROUP BY E.SEGMENT_TYPE,E.SEGMENT_NAME,F.FILE_NAME

ORDER BY 4 DESC;

2. Delete data files (non-archive mode)

alter tablespace USERS drop datafile '/data/user01.dbf';

EOF

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