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DBA_EXTENTS and UNIFORM SIZE

_Topas_Apr 13 2015 — edited Apr 14 2015

Hello all,

I'm puzzled with the value returned by dba_extents:

In my case I have a LMT with this storage definition :

EXTENT MANAGEMENT LOCAL UNIFORM SIZE 40K

BLOCKSIZE 8K

SEGMENT SPACE MANAGEMENT MANUAL


I'm expecting that my next extents are with size 40K

Yet, they are not:

select * from dba_extents a

where A.TABLESPACE_NAME = 'X'

EXTENT_IDFILE_IDBLOCK_IDBYTESBLOCKS
376726355484031078400492075
366721282687385600328050
3561791791590400218700

....

....

And the same extent_id has multiples rows in dba_extents ?

EXTENT_ID     FILE_ID     BLOCK_ID     BYTES     BLOCKS     RELATIVE_FNO

17     321     121065     29491200     3600     321

17     152     102422     29491200     3600     152

17     152     58667     29458432     3596     152

17     11     36432     29491200     3600     11

17     308     45452     29491200     3600     308

17     351     2240     29458432     3596     351

17     152     52822     29491200     3600     152

17     308     76952     29458432     3596     308

17     152     98822     29491200     3600     152

17     351     243306     29458432     3596     351

17     308     69451     29458432     3596     308

17     152     49222     29491200     3600     152

Any explanation for this ?

Thank you.

This post has been answered by _Topas_ on Apr 14 2015
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