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Oracle10g Bigfile Tablespace

A bigfile tablespace (BFT) is a tablespace containing a single file that can have a very large size.

Bigfile Tablespace Overview

The traditional tablespace is referred to as a smallfile tablespace (SFT). A smallfile tablespace contains multiple, relatively small files. The bigfile tablespace has the following characteristics:

  • An Oracle database can contain both bigfile and smallfile tablespaces.
  • System default is to create the traditional smallfile tablespace.
  • The SYSTEM and SYSAUX tablespaces are always created using the system default type.
  • Bigfile tablespaces are supported only for locally managed tablespaces with automatic segment-space management.

There are two exceptions when bigfile tablespace segments are manually managed:

  • Locally managed undo tablespace
  • Temporary tablespace

Bigfile tablespaces are intended to be used with Automated Storage Management (ASM) (see Chapter 1) or other logical volume managers that support RAID. However, you can also use it without ASM.

Get the complete Oracle10g story:

The above text is an excerpt from "Oracle Database 10g New Features: Oracle10g Reference for Advanced Tuning and Administration", by Rampant TechPress.  Written by top Oracle experts, this book has a complete online code deport with ready to use scripts. 

To get the code instantly, click here:

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