Sponsored Content
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.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

what is the command for listing the device specs in solaris

Im looking to get the statistics on a machine memory, cpu speed drive size etc thanks in advance (3 Replies)
Discussion started by: simplimarvelous
3 Replies

2. Solaris

block device problem

Hi ...... I have file system problem when i try to mount get the following message : mount: /dev/rdsk/c1t4d0s7 not a block device .... I run fsck it's ok ,,,, after run newfs -N /dev/dsk/c1t4d0s7 and fsck -o b=535952 /dev/dsk/c1t4d0s7 .............it's ok ........ At the and when i try... (2 Replies)
Discussion started by: tt155
2 Replies

3. UNIX for Dummies Questions & Answers

problem with output of find command being input to basename command...

Hi, I am triying to make sure that there exists only one file with the pattern abc* in path /path/. This directory is having many huge files. If there is only one file then I have to take its complete name only to use furter in my script. I am planning to do like this: if ; then... (2 Replies)
Discussion started by: new_learner
2 Replies

4. Linux

shrinking root partition and using free space to create a block device

We are intending to protect a set of user specified files using LVM mirroring where the protected space on which the user files are stored is mirrored on an LV on a different disk. Our problem is that for a user with a custom layout has installed linux with 2 partitons for swap and / and there is... (0 Replies)
Discussion started by: kickdgrass
0 Replies

5. Red Hat

How to Block the USB device

Hi friends, I wanna know how to block USB devices in my RedHat flavor Operating system. regards, Prakash (3 Replies)
Discussion started by: prakashkumar41
3 Replies

6. Shell Programming and Scripting

Block device fs vs normal directory

I talked with this guy who seems to think loop mounting a fs ext3 image on a directory, as opposed to just using the underlying filesystem, will work better as far as IO conflicts. I have no idea why this would be better? I haven't been able to contact him. Basically we have a daemon that... (0 Replies)
Discussion started by: stevenswj
0 Replies

7. Linux

Block device fs vs normal directory

I use CentOS I talked with this guy who seems to think loop mounting a fs ext3 image on a directory, as opposed to just using the underlying filesystem, will work better as far as IO conflicts. I have no idea why this would be better? I haven't been able to contact him. Basically we have a... (1 Reply)
Discussion started by: stevenswj
1 Replies

8. Shell Programming and Scripting

tcgetattr: Inappropriate ioctl for device after ssh command

Hello everyone I am finishing a script allowing me to purge logs on multiple servers, i have one last pb with the ssh command.........it is throwing me the following error : tcgetattr: Inappropriate ioctl for device (full screen in attached file 1, full script in attached file 2) It... (15 Replies)
Discussion started by: jimmy75_13
15 Replies

9. UNIX for Advanced & Expert Users

Command to see the logical volume path, device mapper path and its corresponding dm device path

Currently I am using this laborious command lvdisplay | awk '/LV Path/ {p=$3} /LV Name/ {n=$3} /VG Name/ {v=$3} /Block device/ {d=$3; sub(".*:", "/dev/dm-", d); printf "%s\t%s\t%s\n", p, "/dev/mapper/"v"-"n, d}' Would like to know if there is any shorter method to get this mapping of... (2 Replies)
Discussion started by: royalibrahim
2 Replies

10. OS X (Apple)

Change Name of Bluetooth Device from Command Line in macOS

Mac Version 10.15.2 (macOS Catalina) Does anyone know how to change the name of a connected bluetooth device from the command line on macOS? I am having trouble with various bluetooth devices which I cannot get the "rename" option in the GUI to "save" properly and so I cannot rename a few... (0 Replies)
Discussion started by: Neo
0 Replies
Apache::Session::Store::Oracle(3pm)			User Contributed Perl Documentation		       Apache::Session::Store::Oracle(3pm)

NAME
Apache::Session::Store::Oracle - Store persistent data in a Oracle database SYNOPSIS
use Apache::Session::Store::Oracle; my $store = new Apache::Session::Store::Oracle; $store->insert($ref); $store->update($ref); $store->materialize($ref); $store->remove($ref); DESCRIPTION
Apache::Session::Store::Oracle fulfills the storage interface of Apache::Session. Session data is stored in a Oracle database. SCHEMA
To use this module, you will need at least these columns in a table called 'sessions': id varchar2(32) # or however long your session IDs are. a_session long To create this schema, you can execute this command using the sqlplus program: CREATE TABLE sessions ( id varchar2(32) not null primary key, a_session long ); If you use some other command, ensure that there is a unique index on the table's id column. CONFIGURATION
The module must know what datasource, username, and password to use when connecting to the database. These values can be set using the options hash (see Apache::Session documentation). The options are DataSource, UserName, and Password. Example: tie %hash, 'Apache::Session::Oracle', $id, { DataSource => 'dbi:Oracle:database', UserName => 'database_user', Password => 'K00l' }; Instead, you may pass in an already-opened DBI handle to your database. tie %hash, 'Apache::Session::Oracle', $id, { Handle => $dbh }; The last option is LongReadLen, which specifies the maximum size of the session object. If not supplied, the default maximum size is 8 KB. AUTHOR
This modules was written by Jeffrey William Baker <jwbaker@acm.org> A fix for the commit policy was contributed by Michael Schout <mschout@gkg.net> SEE ALSO
Apache::Session, Apache::Session::Store::DBI perl v5.10.1 2010-10-18 Apache::Session::Store::Oracle(3pm)
All times are GMT -4. The time now is 12:23 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy