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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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SQL::ReservedWords::Oracle(3pm) 			User Contributed Perl Documentation			   SQL::ReservedWords::Oracle(3pm)

NAME
SQL::ReservedWords::Oracle - Reserved SQL words by Oracle SYNOPSIS
if ( SQL::ReservedWords::Oracle->is_reserved( $word ) ) { print "$word is a reserved Oracle word!"; } DESCRIPTION
Determine if words are reserved by Oracle Database. METHODS
is_reserved( $word ) Returns a boolean indicating if $word is reserved by either Oracle7, Oracle8i, Oracle9i or Oracle10g. is_reserved_by_oracle7( $word ) Returns a boolean indicating if $word is reserved by Oracle7. is_reserved_by_oracle8( $word ) Returns a boolean indicating if $word is reserved by Oracle8i. is_reserved_by_oracle9( $word ) Returns a boolean indicating if $word is reserved by Oracle9i. is_reserved_by_oracle10( $word ) Returns a boolean indicating if $word is reserved by Oracle10g. reserved_by( $word ) Returns a list with Oracle versions that reserves $word. words Returns a list with all reserved words. EXPORTS
Nothing by default. Following subroutines can be exported: is_reserved is_reserved_by_oracle7 is_reserved_by_oracle8 is_reserved_by_oracle9 is_reserved_by_oracle10 reserved_by words SEE ALSO
SQL::ReservedWords <http://www.oracle.com/technology/documentation/> AUTHOR
Christian Hansen "chansen@cpan.org" COPYRIGHT
This program is free software, you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.8.8 2008-03-28 SQL::ReservedWords::Oracle(3pm)
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