日期:2014-05-16  浏览次数:20453 次

DBA_SEGMENTS 数据字典 块数量和发生变化情况
Oracle® Database Reference

10g Release 2 (10.2)

http://docs.oracle.com/cd/B19306_01/server.102/b14237/statviews_4097.htm

DBA_SEGMENTS

DBA_SEGMENTS describes the storage allocated for all segments in the database.

Related View

USER_SEGMENTS describes the storage allocated for the segments owned by the current user's objects. This view does not display the OWNER, HEADER_FILE, HEADER_BLOCK, or RELATIVE_FNO columns.

ColumnDatatypeNULLDescription
OWNERVARCHAR2(30) Username of the segment owner
SEGMENT_NAMEVARCHAR2(81) Name, if any, of the segment
PARTITION_NAMEVARCHAR2(30) Object Partition Name (Set to NULL for non-partitioned objects)
SEGMENT_TYPEVARCHAR2(18) Type of segment: INDEX PARTITION, TABLE PARTITION, TABLE, CLUSTER, INDEX, ROLLBACK, DEFERRED ROLLBACK, TEMPORARY, CACHE, LOBSEGMENT and LOBINDEX
TABLESPACE_NAMEVARCHAR2(30) Name of the tablespace containing the segment
HEADER_FILENUMBER ID of the file containing the segment header
HEADER_BLOCKNUMBER ID of the block containing the segment header
BYTESNUMBER