Getting no responses on this, I created a test 9.0 database on my NT 4.0
workstation, with a block size of 4K. My observations are :

While creating a LMT with uniform extents of size 16K, the minimum datafile
size has to be 25K. With uniform extents of size 32K, the datafile size has
to be more than 41K, and with uniform extents of size 64K, the minimum
datafile size is 73K. Thus, the size of the datafile should be atleast 2
blocks more than the uniform extent size.

SQL> create tablespace mult
  2  datafile 'd:\mult7.dbf' size 10M,
  3           'd:\mult2.dbf' size 41K,
  4           'd:\mult3.dbf' size 73K,
  5           'd:\mult4.dbf' size 128K,
  6           'd:\mult5.dbf' size 1024K,
  7           'd:\mult6.dbf' size 2048K
  8  extent management local uniform size 32K
  9  /

Tablespace created.

SQL>  select * from dba_free_space where tablespace_name='MULT';

TABLESPACE_NAME         FILE_ID   BLOCK_ID      BYTES
-------------------- ---------- ---------- ---------- ----------
------------
MULT                          9         17   10420224       2544
MULT                         10          4      32768          8
MULT                         11          4      65536         16
MULT                         12         17      65536         16
MULT                         13         17     983040        240
MULT                         14         17    2031616        496

6 rows selected.

And right now, I have the answer to all my questions. Also, I strongly
recommend visiting http://www.performance-insight.com/ora3_back.html and
look at the topics on locally managed tablespaces. I was impressed. That
was what helped me get to the right answers.

Regards
Raj






                                                                                       
                             
                    Rajesh                                                             
                             
                    Rao/CHASE@CHA        To:     Multiple recipients of list ORACLE-L 
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                    SE                   cc:                                           
                             
                    Sent by:             Subject:     Bitmap Header in a Uniform LMT?  
                             
                    root@fatcity.                                                      
                             
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                    August 09,                                                         
                             
                    2002 02:28 PM                                                      
                             
                    Please                                                             
                             
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                    ORACLE-L                                                           
                             
                                                                                       
                             
                                                                                       
                             




I asked this question the other day, but got no replies. I make one more
attempt and rephrase the question. A curious mind wants to know " Assuming
a block size of 2K, what would be the size of the bitmap header if I create
a uniform LMT with datafiles of size 32K, 64K, 100K, 1M and 64M?"

Metalink has not given me any definite answer as yet, and the notes there
have confused moi.

Regards
Raj


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