DBA_EXTENTS « System Tables Views « Oracle PL / SQL

1.Query DBA_EXTENTS for Extent number in the segment, Starting block number for the extent, Size of the extent in bytes, Size of the extent, in Oracle blocks
2.Query DBA_EXTENTS for Name of the segment, Type of segment (ex. TABLE, INDEX)
3.Query DBA_EXTENTS for Tablespace name,Owner of the segment
4.Query to Find Out the File and Block IDs