I have a doubt in extents allocation.

Assume a tablespace called 'PAYROLL' having following defaults.

TABLESPACE_NAME MIN_EXTENTS MAX_EXTENTS PCT_INCREASE
--------------- ----------- ----------- ------------
PAYROLL 1 505 50

and I have created on table called TEST by logging in as a user whose default tablespace is this payroll tablespace.

create table test ( i integer)
storage (initial 1k next 1k minextents 1 maxextents 2)

Now if I run the following query

SQL> select segment_name,sum(blocks),bytes from dba_extents group by segment_name,bytes
having segment_name = 'TEST'

SEGMENT_NAME SUM(BLOCKS) BYTES
-------------------- ----------- ---------
TEST 2 16384


And the DB_BLOCK_SIZE = 8192 (8k)

I assumed that there should be the value 1 in the sum(blocks) and 8192 in the bytes column because
the block size is 8k and so there should be only one block.

But it is different and it is taking 2 blocks with 16384.

Can anyone clear this...?