Oracle11gR2延迟段创建

linuxidc@LINUXIDC11gt; create table seg_test( x int primary key, y varchar2(20)); Table created. linuxidc@LINUXIDC11gt

linuxidc@LINUXIDC11> create table seg_test( x int primary key, y varchar2(20));

Table created.

linuxidc@LINUXIDC11> select owner,header_file,header_block,bytes,blocks,extents from dba_segments where segment_name = 'SEG_TEST';

no rows selected ---没有初始化是数据，， 所以还没有段

linuxidc@LINUXIDC11> insert into seg_test values(1,'linuxidc');

1 row created.

linuxidc@LINUXIDC11> commit;

Commit complete.

linuxidc@LINUXIDC11> select owner,header_file,header_block,bytes,blocks,extents from dba_segments where segment_name = 'SEG_TEST';

OWNER HEADER_FILE HEADER_BLOCK BYTES BLOCKS EXTENTS
------------------------------ ----------- ------------ ---------- ---------- ----------
linuxidc 4 57858 65536 8 1