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Porting
To Parallel Server
Oracle Tips by Mike Ault |
Introduction
Databases have evolved from being tens of
megabytes to terabytes and even petabytes in size. Adding to the
complexity of managing these large databases is the constraint of
longer and longer required uptimes, upto and including 24X7
requirements. It can be difficult to provide proper support for
large, 24X7 databases. Tuning, backup, and normal maintenance
activities suddenly become impossible if the database can not be
taken out of service for a moment, let alone the several days
required for some maintenance activities. One possible solution to
the 24X7 enigma is to use Oracle's parallel server technology.
Oracle parallel server, coupled with the appropriate disk mirroring
and shadowing allows for operations and administration activities to
be accomplished without downtime. Parallel server also allows for
application partitioning, load balancing and increase in the number
of concurrent users that can access a single set of database files.
Unfortunately, most parallel server implementation strategies assume
you are starting with the design phase, unfortunately, many of us
who wish to implement this technology have existing applications.
Porting to parallel server is a challenge, hopefully this
presentation will point out some of the pitfalls and make transition
to parallel server easier.
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For more information on this topic, I recommend Don
Burleson's latest book "Oracle
Tuning: The Definitive Reference".
You can buy it direct from the publisher for 50%-off and get
instant access to the code depot of Oracle tuning scripts: |
http://www.rampant-books.com/book_1002_oracle_tuning_definitive_reference_2nd_ed.htm
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Download your Oracle scripts now:
www.oracle-script.com
The
definitive Oracle Script collection for every Oracle professional DBA
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