01-17-2017
Quote:
Originally Posted by
powerAIX
T
I have already raise request to increase the SGA to 80Gb as memory is of 200Gb.
OK, but prepare to either shrink the LPARs memory or increase the SGA further to about 90% of the available RAM.
The most imminent thing to do, though, is to set the "FILESYSTEMIO_OPTIONS=SETALL" option or to mount the filesystems accordingly. I suggest doing it in the DB configuration: without this you will always have the OS trying to (double-) buffer the DB I/O, which will always be detrimental to performance.
Mounting an FS in CIO-mode (concurrent-I/O) will make all the I/O on that FS be via concurrent I/O, which is a good idea for DB files opened by the DB but a bad idea otherwise. You would need to create separate FSes (not to be mounted with the CIO-option) for i.e. dumps, exports, etc.. Setting the option in the Oracle-config will make the database open the individual files with the CIO-option but the FS itself is not changed. Thiw will have the same effect as above but without the need to create separated FSes.
I hope this helps.
bakunin
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LEARN ABOUT DEBIAN
bootcd2disk
BOOTCD2DISK(1) bootcd utils BOOTCD2DISK(1)
NAME
bootcd2disk - copy a system running from bootcd to a disk
SYNOPSIS
bootcd2disk [-i] [-s] [-c <config directory>] [-url <url>]
DESCRIPTION
With bootcd2disk a CD build with bootcdwrite can be copied to one or more Disk Partitions from the running cd-based system. Therefore
bootcd could be used to make rescue disks.
It is also possible to let bootcd2disk automatically find a disk, make partitions on it, copy the cd to the disk and make the disk
bootable. bootcd2disk will be available as soon as your system is running from cd.
OPTIONS
-i With this option the complete bootcd2disk runs in interactive mode and you can run each function manually. This option is useful for
debugging.
-v The option "-v" (verbose) adds messages on running.
-s This option can be used to disable interactive questions and to try to ignore errors.
-c <config directory>
The configuration directory which normally is "/etc/bootcd" can be changed with this.
-url <url>
If bootcd2disk is slow on your system (because of a slow CD/DVD drive or the HP ILO virtual CD interface), you can use an image server
to get the image from. bootcd2disk use the SWAP partition of your upcoming system as temporary space and copy the image from the con-
figured image server to this partition and use it as image. The image server url is configured with this option.
example install from imagesserver:
bootcd2disk -url http://192.168.1.1/cdimage.iso
Another way the increase the performance is the use of the mounted CD/DVD itself for the copy. The option "-url" is the same, the url
starts with "file:///"
example install from CD/DVD drive sdc0:
bootcd2disk -url file:///dev/sdc0
The swap partition of the upcoming system must have enough space to get the whole image!
Currently no other options can be specified on command line. All other configuration has to be done in the config files.
FILES
/etc/bootcd/bootcd2disk.conf
Configuration for bootcd2disk.
SEE ALSO
Documentation in bootcd2disk.conf
bootcd2disk.conf(5), bootcd(1), bootcdflopcp(1), bootcdwrite(1)
AUTHOR
This manual page was written by Bernd Schumacher <bernd.schumacher@hp.com> and Carsten Dinkelmann <Carsten.Dinkelmann@foobar-cpa.de> for
the Debian GNU/Linux system (but may be used by others).
bootcd2disk 2007-04-04 BOOTCD2DISK(1)