List All Pages
This section apply to Debian Etch, as well as a Ubuntu 7.10.
If after booting your vm, you realize that you forget to add a special block from domain0, it is still possible to add it when you vm...
There is an utility shipped with solaris that help you analyze the networking activity that come throught your host.
This utility is :
snoop
For a full documentation about this utility, of...
Still need to be done… Sorry !!!
I will tell you how to use this technology with a Debian Linux.
If you want more information about it, let's check it here.
Before using the technology, here is some information that I have in mind...
How to install awstats and use it
Installation
You first, of course, need to install the corresponding package, so :
apt-get install awstats
if you didn't still install a httpd, let's do it. I...
Check if dataguard is running properly
Here is, how you can check if you dataguard configuration is running properly. There exist two ways :
You can check it by the official way, like it is said...
I recently read that it is possible to experience ios cisco on a simple linux box. So, I gave it try. Really nice if someone decide to try a CCNA, CCIE or any other cisco certification.
You can try...
NOT COMPLETE
I will try here to explain you how to set up a apache web server with high-availability ! As I didn't still set it up, you have to wait… I'll put my note on how to achieve it , and...
In this howto, I will use the technology oracle ocfs.
You need to have first a shared storage between two host. This can be done with :
iscsi
ATA over ethernet
…
One thing to note, is that you...
ORA-00600
The solution below don't seems to work anymore
I known that I got this error when I change the file :
/etc/hostname
of my system, but I still don't known how to get a working solution...
Here is below some errors that I got when using Xen, and the solution that I found to solve them !
4gb seg fixup, process syslogd
You only have to update your libc6 ! So :
# apt-get install...
Now, that you install the required software to use any iSCSI disk available (still not the case ? so go here ) on the network, it's time to configure the software and discover these new...
Need to install the software needed to do the things below ? So, go here…
Add a iSCSI target
So, it's time to configure some target, and use it on other system.
To specify a block device to be...
If you want to set up quickly a running rman configuration, only follow these 4 steps, you have to write it in your rman prompt. It is also possible to launch some rman commands within files. Like...
To let me any comments, positif or negative, please e-mail me at : moc.liamg|nwoops#moc.liamg|nwoops
To create a dataguard config, it can be done in two step, preparing the primary database, and then preparing the secondary database.
To create this standby database for oracle Dataguard, I will...
If you don't still configure rman, please go here.
Checking if backup is necessary
Suppose that you don't remember when was your last backup, or you don't remember what you backup last. In these...
Preliminary
Of course, before doing any incremental backup of database, datafile or tablespace, you need to do a full backup. So, if you still didn't do it, go here to known how to do this first...
How to switch over
How to fail over
Information about redo transport services
How to activate dataguard (when already configured)
Check running dataguard configuration
How to disactivate a physical...
How to enable to install backports packages
You have to edit the file :
/etc/apt/sources.list
and add a line in the file. It will tell to apt-get where to get the backports packages, so, add this...
After listing your available backup of rman, you can, of course, delete some not needed anymore.
This can be done interactively, I means that rman will ask you yes or no to delete a specified...
Here is one things that I need to known about DNS.
If you want to known, how long an addresse will be cache with a dns server, you can execute this command :
# dig 192.168.1.1...
Once, I installed normally Solaris on my computer, and did not use all the space available on the hard drive. So, I decided to use the rest to install a Debian Linux.
But then, when I want to boot...
Estimate size of exports
Before doing any export (using the old exp command) of your data in oracle, you need to have enough space on your disk.
You can estimate the place that will take all the...
Normally, when you want to list all the process of the sytem, you would probably use this command :
# ps -ef
But if won't show you all the args that the process receive when it was launched...
With high-available network, you can keep a connection with a server, even if a NIC/cable is down !
Nowadays, it's really important in enterprise network if we use SAN by instance.
How can we do...
This page won't explain how to set up a complete dataguard configuration, but only tells you how to activate it, when you database was offline. So, I suppose here that you have set up succesfully...
I will suppose here, that you are running dataguard between your two or more database, and that you want to disable a physical running standby database. So, to do that, I suppose that you already...
If you are allowed to edit pages in this Site, simply click on edit button at the bottom of the page. This will open an editor with a toolbar pallette with options.
To create a link to a new page,...
What is it ?
It consist to switch the primary database to a standby database, and of course switch the standby database to be the primary database.
Primary database : is the one that user connect...
Now, that you have your export, it's time to import it into your new system.
I'll here suppose that you executed the same command as I did on this webpage.
We will also do it with a parameter file,...
If you use dataguard, you have also other choice than standby database, but of course, it will probably be the most important part of the system. But if you want, we can also configure dataguard to...
Sometimes, I needed to known which package I installed previously, the current or any other already once installed and didn't known how to do it. After digging into the documentation, I finally...
If you want to enjoy iSCSI disk available on your network, you have to first install a package, it's really simply and there isn't any others requirement to do.
So, the only thing you have to do is...
Depending on your distribution of linux, you can use iSCSI server.
Install on Debian
As iscsi target on Linux isn't still in a stable package, you have two choice to install it
install it from...
Invite your friends to join this Wiki!
During my spare time at work, we manage to play a little with iSCSI devices. We thought that it could help us for our future, as it is used in data center, along with Fiber channel but a really...
Don't forget that there is a server and a client side for any iSCSI use.
What does it means for you ? see below…
Server side
is the host that provide a disk to be used with iSCSI...
Please change this page according to your policy (configure first using Site Manager) and remove this note.
Who can join?
You can write here who can become a member of this site.
Join!
So you...
All the stuffs on this section of the website, are mainly tested on a Debian system. So, there is also a great change that it will also run the same way on a ubuntu, or any debian based system....
You can list detail information of which backup are available with rman :
RMAN> list backup;
If you only want some information about the backup, let's simply do :
RMAN> list backup...
I'll share it how to do a live migration with xen.
First, you need to known that to do a live migration for a domU, the back-storage of your virtual machine has to be on a shared storage, like...
When you first do the backup, these files that represent the backup are of course already available to the db that made it.
But if you want, by instance, put theses files to another computer, you...
This point only apply to a Debian Etch system, not an Ubuntu one. Be aware of that.
If you get an error that looks like this one :
Configuring network interfaces...SIOCSIFADDR: No such...
Here is some software that could be usefull do analyze and to some stuff on a network.
sing : enhance version of ping
hping3 : Send and receive UDP/TCP/ICMP and see how react a target host
p0f :...
I tried once to mount a share nfs directory from a linux server, and I get this error :
nfs mount: mount: /local-disk/dir-nfs: Not owner
To solve the error, you have to tell to solaris to use the...
You will find on this pages some tuto related to oracle utilities, like Rman, dataguard.
I will write here some how-to, how I get this stuffs working. I hope that it will help...
The file that I used to install oracle 10g2 was that one :
10201_database_linux32.zip
my system was :
Debian 4.0 2.6.18-4-686 #1
The packages that needed to be install was...
I will try on this page to speak about some issues I get during my work.
General information.
A minor page fault can happen, where there is a dirty page of a page from a disk I/O. when an...
This page is still in construction, and his content is still not yet very safe to be done in production
The explanation here, can be done by instance if you want to put a a database to another...
You will find here what you need to known before beginning with Rman. We will each time begin with simple things, and if you want more information, I'll provide a link if possible…
Configure...
Welcome page
How to edit pages?
How to join this site?
Site members
Recent changes
List all pages
Page Tags
Site Manager
Invite someone
Who invite who
Page tags
Add a new page
edit this...
Members:
Moderators
Admins
Here is some subsection related to Solaris, preferably version 10.
SAN techonologies
iSCSI on solaris system
Network technologies
Analyze network activity
nfs_error
Miscellaneous
Booting...
Sometime, when creating backup, you may want to only backup a specific datafile. You can do so, by identifing the datafile name or also the datafile internal number for rman.
The list...
Here, you can find some usefull sql plus command, to enhance or fix how you query the database.
Limit the amount of line of a query.
At the begining, I used sqlplus, but also used plsql developper...
Welcome
I will try here to share my experience as a sys admin, and give some tuto to ease administration of a system on a linux or solaris system.
It helps me also to remind how to do something...
linux
Virtualization
SAN on Linux
Cluster on Linux
solaris
SAN on Solaris
oracle
Root page
dataguard
rman
Forum
Recent posts
contact
Displaying installed files of a package
If you want to known all the files installed by a package, execute this command :
# dpkg -L name_of_package
and you will get an output that looks like...
I'll try to put here some usefull package that an administrator can use to monitor or have a greater control on his system.
Network related software
Monitoring statistique of system
There is...
Sometime, when you want to see a file with vi, by instance some log file, it occurs that lines are longer than your screen. So, if you don't do something, it's not really easy to read properly a...
Once I wanted to retrieve the partition corresponding to one of my UUID in /etc/fstab, I used this command :
findfs
This command can find for you a partition by only specifying the UUID/ label...
Introduction
VirtualBox allow you to run any OS you want on your Linux or Windows Box. But of course, I will only be focused to use it on a Linux host !
It can help you to not use anymore windows...
Now, that I really understand how it worked and how to use it, I really enjoy volume manager. Anyone has to use it !!
Here is some tricks and tips to use volume with LVM 2.
Once I got an error...
Still need to be done… Sorry !!!
According to Wikipedia, the world largest wiki site:
A Wiki ([ˈwiː.kiː] <wee-kee> or [ˈwɪ.kiː] <wick-ey>) is a type of website that allows users to add, remove, or otherwise edit...
Check how particular Members joined this Wiki.
Depending on your distribution, Debian Etch or Ubuntu 7.10, there is some different version of package that needs to be install on your system to enable Xen :
Debian Etch
Ubuntu 7.10
#...
At beginnig, when I play with Xen, I was on a small local lan, and by this way, we were allocated a range of ip. So, this wasn't difficult to configure a xen machine, and get network working out of...
During my reading of the zfs document, I note some interresting remark, I hope… Here, they are… not exhaustive of course !
One really disturbing thing with zfs, is that when we write something...
