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OCP Instructors Guide for Oracle DBA Certification

Chapter 5 - Oracle Database Objects

Oracle Tablespace Changes

The Oracle Database Fundamentals I (1Z0-031) and the Oracle Database Performance Tuning (1Z0-033) certification tests will have numerous questions on Oracle tablespaces.  Test candidates should have a thorough understanding of Oracle tablespaces and datafiles.   This knowledge should include:

  • CREATE tablespace syntax

  • Locally managed vs. dictionary managed tablespaces

  • Datafile fragmentation

  • Extent allocation in tablespaces (know how autoallocate and uniform size allocate extents)

  • High-water marks

  • Temporary tablespaces

  • Permanent tablespaces

  • Tablespace quotas

  • What happens when a tablespace is set offline

Locally Managed System Tablespaces

Locally managed tablespaces allow the Oracle system to automatically manage an object's extents. Locally managed tablespaces track object information in bitmap structures stored in the tablespace itself. Oracle states that locally managed tablespaces provide increases in the concurrency and speed of space operations and generally have a positive impact on application performance.

The above text is an excerpt from:

OCP Instructors Guide for Oracle DBA Certification
A Study Guide to Advanced Oracle Certified Professional Database
Administration Techniques

ISBN 0-9744355-3-8

by Christopher T. Foot

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