ORACLE查看数据文件包含哪些对象

      , 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 =109

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

ORDER BY 4 DESC;

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_NAME =&FILE_NAME

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

ORDER BY 4 DESC;

错误的写法，如下所示，DBA_SEGMENTS的HEADER_FILE表示ID of the file containing the segment header，主要是因为仅仅包含段对象的段头所在的文件。

SELECT ds.OWNER                  AS OWNER

      ,df.FILE_NAME              AS FILE_NAME

      ,ds.SEGMENT_NAME           AS SEGMENT_NAME

      ,ds.SEGMENT_TYPE           AS SEGMENT_TYPE

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

FROM DBA_SEGMENTS ds 

LEFT JOIN DBA_DATA_FILES df ON ds.HEADER_FILE = df.FILE_ID

WHERE ds.TABLESPACE_NAME=&TABLESPACE_NAME

  AND df.FILE_ID=&FILE_ID

GROUP BY OWNER,FILE_NAME,SEGMENT_NAME,SEGMENT_TYPE

ORDER BY 4;

ORACLE查看数据文件包含哪些对象

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