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  Oracle Replication Tips by Burleson

Oracle replication Offline Instantiation

completed.  Any changes and the data at the two sites will be out of synch. 

Export, Import Method

The tried and true method is to export the data at the base site, move it across the network, and import it at the remote site.  This method was about the only thing available before Oracle9i.  By piping the export to a compression program, the dump file can be reduced to speed the movement across the network.  The most time consuming part is, of course, the import.  Oracle9i introduced a new method called Transportable Tablespaces.

Transportable Tablespaces

Transportable tablespaces allow the DBA to export only the tablespace metadata from the data dictionary and then move the data in datafiles to the remote site.  Once the metadata is loaded into the remote site’s data dictionary, the tablespace can be used.  Since there is no import of data (except a small amount of metadata), transportable tablespaces can greatly speed the process of propagating the initial data to remote master sites. 

This is an excerpt from Oracle Replication By Rampant TechPress (only $19.95).  You can click here to order a copy and get instant access to the code depot:

Get a Personal Oracle Replication Mentor

The author is now offering personal mentors for Oracle DBAs where you can have an Oracle expert right at your fingertips, anytime day or night. We work with hundreds of Oracle databases every year, so we know exactly how to quickly assist you with any Oracle replication question. 

You can get me personally, or any Oracle Certified replication DBA with more than 20 years of full-time IT experience. 




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