Raj,
The AUTOALLOCATE option causes the tablespace to b created with a bitmap
containing one bit for each data block. Oracle controls the extent size.
When we create an object in the tablespace, Oracle will start out by
allocating 64KB extent to that object. As the object grows, more 64KB
extents
will be added.
Use the UNIFORM SIZE clause to manage storage space in extents that r larger
than
one block.
CREATE TABLESPACE <tablespace_name>
DATAFILE '/PATH OF DATAFILE'
SIZE 1000M
EXTENT MANAGEMENT LOCAL UNIFORM SIZE SIZE 50M.
The Uniform extent size will b rounded up to the nearest integer multiple of
the
database block size. Here, the bitmap will contain one bit for each 50MB of
storage
space in the tablespace.
Oracle will allocate the initial extent of 64KB even if we ask for less.
Also remember, begining with the 16th extent, Oracle will increase the
default
extent size from 64KB to 1MB.
Hope this helps.
Samir Sarkar
Oracle DBA - Lennon Team
SchlumbergerSema
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-----Original Message-----
Sent: 15 November 2001 21:01
To: Multiple recipients of list ORACLE-L
Hi all,
I tried to read through, but couldn't find the exact answer I am looking
for. If AUTOALLOCATE is specified for LMT, how does oracle determine the
next extent size?
TIA
Raj
______________________________________________________
Rajendra Jamadagni MIS, ESPN Inc.
Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN Inc.
QOTD: Any clod can have facts, but having an opinion is an art !
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