||Oracle Tips by Burleson
Chapter 6 Oracle Tablespace and File
There are two exceptions that bigfile tablespace
segments are manually managed:
Bigfile tablespace are intended to be used with
Automated Storage Management (see chapter one) or other logical
volume managers that support RAID.
Bigfile tablespace has the following benefits:
It simplifies large database tablespace
management by reducing the number of datafiles needed.
It simplifies datafile management with
Oracle-managed files and Automated Storage Management (AMS) by
eliminating the need for adding new datafiles and dealing with
It allows you to create bigfile tablespace up
to 8 exabytes (8 million terabytes) in size, and significantly
increase the storage capacity of an oracle database.
It makes the concept that a tablespace and a
datafile are logically equivalent.
Maximum Database Size
The BFT extended the maximum size of tablespace
and database. Let us take a look at the two formulas that calculate
the maximum size of data file and database.
The maximum data file size is calculated by:
Maximum datafile size = db_block_size * maximum
number of blocks
The maximum amount of data in an Oracle
database is calculated by:
The above text is
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