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Special Forums Hardware DD command using block device as input Post 302671629 by methyl on Friday 13th of July 2012 08:13:49 PM
Old 07-13-2012
Quote:
I am wondering if the speed of repositioning the disk head ...
The days of an Operating System being aware of how a disc works are long gone.

A modern disc will use variable block sizes to read/write to the disc and have it's own buffers. The Operating System will see the disc as if it is an early design, but the inner workings are invisible to the Operating System. As are the inner workings of disc arrays.

Get hold of the detailed Installation Guide for your Oracle version and your Operating System version.
Just use the kernel parameters recommended by Oracle, the Database Block Size recommended by Oracle, and the Oracle startup parameters recommended by Oracle scaled for you application and within any memory constraints. The big performance gains within Oracle Performance Tuning are in areas like Sort Buffer Size and tuning the SGA.
 

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Apache::Session::Oracle(3pm)				User Contributed Perl Documentation			      Apache::Session::Oracle(3pm)

NAME
Apache::Session::Oracle - An implementation of Apache::Session SYNOPSIS
use Apache::Session::Oracle; #if you want Apache::Session to open new DB handles: tie %hash, 'Apache::Session::Oracle', $id, { DataSource => 'dbi:Oracle:sessions', UserName => $db_user, Password => $db_pass, Commit => 1 }; #or, if your handles are already opened: tie %hash, 'Apache::Session::Oracle', $id, { Handle => $dbh, Commit => 1 }; DESCRIPTION
This module is an implementation of Apache::Session. It uses the Oracle backing store and no locking. See the example, and the documentation for Apache::Session::Store::Oracle for more details. USAGE
The special Apache::Session argument for this module is Commit. You MUST provide the Commit argument, which instructs this module to either commit the transaction when it is finished, or to simply do nothing. This feature is provided so that this module will not have adverse interactions with your local transaction policy, nor your local database handle caching policy. The argument is mandatory in order to make you think about this problem. This module also respects the LongReadLen argument, which specifies the maximum size of the session object. If not specified, the default maximum is 8 KB. AUTHOR
This module was written by Jeffrey William Baker <jwbaker@acm.org>. SEE ALSO
Apache::Session::File, Apache::Session::Flex, Apache::Session::DB_File, Apache::Session::Postgres, Apache::Session perl v5.10.1 2010-10-18 Apache::Session::Oracle(3pm)
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