Oracle Consulting Oracle Training Oracle Support Development
Home
Catalog
Oracle Books
SQL Server Books
IT Books
Job Interview Books
eBooks
Rampant Horse Books
911 Series
Pedagogue Books

Oracle Software
image
Write for Rampant
Publish with Rampant
Rampant News
Rampant Authors
Rampant Staff
 Phone
 800-766-1884
Oracle News
Oracle Forum
Oracle Tips
Articles by our Authors
Press Releases
SQL Server Books
image
image

Oracle 11g Books

Oracle tuning

Oracle training

Oracle support

Remote Oracle

STATSPACK Viewer

Privacy Policy

 

 
 

Oracle transportable tablespaces from RMAN backups

Article by Rampant Author Chris Foot

 

Transportable Tablespace from RMAN Backups
A new feature in Oracle8i provided a high-speed mechanism for copying tablespaces (data files) between identical systems and allowing the same data to be accessed by both systems. Now data movement could be as fast as simply transferring the files between machines.

Transporting tablespaces is particularly useful for:

  • Feeding data from OLTP systems to data warehouse staging systems
  • Updating data warehouses and data marts from staging systems
  • Loading data marts from central data warehouses
  • Archiving OLTP and data warehouse systems efficiently

The Export and Import utilities are used to "unplug" and "plug-in" the data dictionary structural information (metadata) that pertains to the objects in the tablespace set being transported. The data is copied by operating system commands and is only limited by network bandwidth and hardware limitations. Since the Export/Import utilities only transfer the metadata, they run much faster than their more traditional counterparts.

The problem is that to "unplug" the tablespace, it had to be taken offline first. This could be a problem for applications that require 24 x 7 data availability. In 10G R2, administrators are able to create transportable tablespaces using RMAN backups instead of the online database datafiles. This allows the data to be moved without making it read only in the source database.

 

 

 

   

 Copyright © 1996 -2016 by Burleson. All rights reserved.


Oracle® is the registered trademark of Oracle Corporation. SQL Server® is the registered trademark of Microsoft Corporation. 
Many of the designations used by computer vendors to distinguish their products are claimed as Trademarks