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Oracle database caching

The future of Oracle database administration is constantly changing.  These changes will forever alter the way that Oracle DBAs perform their work.  The following are examples of some expected changes:

§       Fully-cached databases: Just as the UNISYS benchmark used 115 gigabyte data buffers, many Oracle systems will become fully cached. This is largely a result of decreasing RAM costs and the advent of 64-bit Oracle servers.

§       Solid-state Oracle: The advent of Solid-State Disk (SSD) will produce a faster replacement for the archaic spinning platters of magnetic coated media and will someday relive the need for data buffers.

§       Back to the mainframe: The Oracle system of the future will run an entire corporate enterprise on a two server system consisting of a main server and a geographically distant failover server, which provides both failover and disaster recovery.

§       Changing role of the DBA: A single DBA will be able to manage dozens of Oracle instances in a consolidated environment.  This is reminiscent of the 1980s, when the DBA for a large corporation was required to have credentials, including advanced degrees and skills far exceeding those of the typical Oracle DBA of the late 1990s.

Having experienced the huge wave of demand for Oracle DBAs in the early 1990s as the direct result of server deconsolidation, many DBAs would welcome the return to the old days where they could manage dozens of Oracle instances within a single server environment.


The next step is to take a look at disk tuning issues with Oracle and see how the new AWR and ASH views can help.



This is an excerpt from my 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:




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