Oracle-L: RE: NEXT_EXTENT and PCT

From: Roger Xu <roger_xu_at_dp7uptx.com>
Date: Tue, 26 Aug 2003 15:44:25 -0800
Message-ID: <F001.005CD564.20030826154425@fatcity.com>

Why the table was created with initial extent as 1700M, but dba_extents says the first extent is 8M only?

SQL> select initial_extent from dba_tables where table_name='BSIS';

1782579200

SQL> select bytes from dba_extents where segment_name='BSIS' and extent_id=1;

8388608

SQL> select bytes,count(*) from dba_extents where segment_name='BSIS' group by bytes;

   8388608        113
  67108864        137

-----Original Message-----
Sent: Tuesday, August 26, 2003 3:14 PM
To: Multiple recipients of list ORACLE-L

Roger,

Space management can be specified for a tablespace, not a segment. Create ASSM tablespace and alter table ... move there.
Locally managed tablespace, I guess. Oracle doesn't need NEXT_EXTENT and PCT_INCREASE then.

HTH
Vadim

-----Original Message-----
Sent: Tuesday, August 26, 2003 3:59 PM
To: Multiple recipients of list ORACLE-L

Hi,

I have the following output when I querying dba_tables.

Question 1: This table is created using manual management method, right?

What do I do in order to turn it to Automatic segment-space management?

Question 2: How come there are no values for NEXT_EXTENT and PCT_INCREASE?

Thanks,

Roger Xu

PCT_FREE PCT_USED INI_TRANS MAX_TRANS ---------- ---------- ---------- ----------

10 40 1 255

INITIAL_EXTENT NEXT_EXTENT MIN_EXTENTS MAX_EXTENTS PCT_INCREASE -------------- ----------- ----------- ----------- ------------

     527491072                       1  2147483645

FREELISTS FREELIST_GROUPS
---------- ---------------

1 1

LOGGING BACKED_UP NUM_ROWS
------- --------- ----------
YES N 216122635 BLOCKS EMPTY_BLOCKS AVG_SPACE CHAIN_CNT ---------- ------------ ---------- ----------

7651115 4307 319 0

AVG_ROW_LEN AVG_SPACE_FREELIST_BLOCKS NUM_FREELIST_BLOCKS

----------- ------------------------- -------------------
        254                      4496                   2

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Author: Roger Xu
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Author: Gorbounov,Vadim
INET: vadim.gorbounov_at_liberate.com

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Author: Roger Xu
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RE: NEXT_EXTENT and PCT_INCREASE