DBA_EXTENTS

Extents comprising all segments in the database

Columns
   ___________________________
 
   OWNER
      Owner of the segment associated with the extent
   FILE_ID
      Name of the file containing the extent
   RELATIVE_FNO
      Relative number of the file containing the segment header
   BLOCKS
      Size of the extent in ORACLE blocks
   BYTES
      Size of the extent in bytes
   BLOCK_ID
      Starting block number of the extent
   EXTENT_ID
      Extent number in the segment
   TABLESPACE_NAME
      Name of the tablespace containing the extent
   SEGMENT_TYPE
      Type of the segment
   SEGMENT_NAME
      Name of the segment associated with the extent
   PARTITION_NAME
      Partition/Subpartition Name, if any, of the segment

Related Commands:

Simon Sheppard
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