Archenic - Technology Beyond Expertise

Linux

What is it?
Linux is an example of Open Source software development and Free Operating System (OS).

Cost
Linux can be freely distributed, downloaded freely, distributed through magazines, Books etc. There are priced versions for Linux also, but they are normally cheaper than Windows.

Users
Everyone. From home users to developers and computer enthusiasts alike.

Development and Distribution
Linux is developed by Open Source development i.e. through sharing and collaboration of code and features through forums etc and it is distributed by various vendors.

Usage
Linux can be installed on a wide variety of computer hardware, ranging from mobile phones, tablet computers and video game consoles, to mainframes and supercomputers.

Filesystem
Ext2, Ext3, Ext4, Jfs, ReiserFS, Xfs, Btrfs, FAT, FAT32, NTFS

GUI
Linux typically provides two GUIs, KDE and Gnome. But there are millions of alternatives such as LXDE, Xfce, Unity, Mate, twm, ect.

Virus
Linux has had about 60-100 viruses listed till date. None of them actively spreading nowadays.

Threat and Solution
In case of Linux, threat detection and solution is very fast, as Linux is mainly community driven and whenever any Linux user posts any kind of threat, several developers start working on it from different parts of the world

Processor
Dozens of different kinds.

Distros
Ubuntu, Fedora, Red Hat, Debian, SUSE, Centos, Android etc.

UNIX

What is it?
Unix is an operating system that is very popular in universities, companies, big enterprises etc.

Cost
Different flavors of Unix have different cost structures according to vendors

User
Unix operating systems were developed mainly for mainframes, servers and workstations except OSX, Which is designed for everyone. The Unix environment and the client-server program model were essential elements in the development of the Internet

Development and Distribution
Unix systems are divided into various other flavors, mostly developed by AT&T as well as various commercial vendors and non-profit organizations..

Usage
The UNIX operating system is used in internet servers, workstations & PCs. Backbone of the majority of finance infrastructure and many 24x365 high availability solutions.

Filesystems
jfs, gpfs, hfs, hfs+, ufs, xfs, zfs format

GUI
Initially Unix was a command based OS, but later a GUI was created called Common Desktop Environment. Most distributions now ship with Gnome.

Virus
A rough estimate of UNIX viruses is between 85 -120 viruses reported till date.

Threat and Solution
Because of the proprietary nature of the original Unix, users have to wait for a while, to get the proper bug fixing patch. But these are not as common.

Processors
x86/x64, Sparc, Power, Itanium, PA-RISC, PowerPC and many others.

Distros
AIX, Solaris, OpenBSD, HP-UX, Mac OS, FreeBSD, NetBSD

Looking into the Future...

Studies have shown that Linux has grown faster than any other server OS over the past few years. Current estimates are that Linux has a user base of about 25 million machines compared to only 5.5 million combined UNIX installations.

Keep in mind that these figures do not include the Android OS and the many consumers who have chosen to run their home computers using open-source Linux distributions.

At this point, it’s safe to say that UNIX is quickly becoming a thing of the past. Especially given the current state of the economy, it is difficult for a business to justify spending tens or hundreds of thousands of dollars on UNIX hardware when Linux machines are just as capable and significantly less expensive. In the next few years, UNIX will most likely become a thing only found in history books about the evolution of today’s operating system.
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Modules can communicate with each other to create a fully integrated solution specific to almost any customer within a wide range of industry sectors.

SAP ECC implementations are a big challenge for any customer because of the risk that represents changing the way they manage vital information and processes, but the importance of counting with this kinds of systems, and the benefits of a successful/integrated ERP implementation are too valuable.

With modules like Financials (FI), Material Management (MM), Sales and Distribution (SD), Human Capital Management (HCM), among others, SAP ECC is one of the preferred choices for many organizations.

Releases

-SAP R/1, System RF - 1972

-SAP R/2, ran on a Mainframe architecture - 1979

-SAP R/3 Enterprise Edition 1.0 A - July 1992

-SAP R/3 Enterprise Edition 2.0 - 1993

-SAP R/3 Enterprise Edition 3.0 - 1995

-SAP R/3 Enterprise Edition 4.0 B - June 1998

-SAP R/3 Enterprise Edition 4.3

-SAP R/3 Enterprise Edition 4.5 B - March 1999

-SAP R/3 Enterprise Edition 4.6 C - April 2001

-SAP R/3 Enterprise Edition 4.6 F

-SAP R/3 Enterprise Release 4.70 Release Date March- Dec 2003[2]

-SAP R/3 Enterprise Edition 4.7

-SAP R/3 Enterprise Central Component (ECC) 5.0 - 2004

-SAP R/3 Enterprise Central Component (ECC) 6.0 - Oct 2005- Jun2006

-SAP ERP 6.0 - Enhancement Packages (1,2,3,4,5,6,7)

Listener is a separate process that runs on the database server computer. It receives incoming client connection requests and manages the traffic of these requests to the database server.

listener directory - $ORACLE_HOME/112_64/network/admin

eg: listener is a tool to connect a DB with SAP.

Useful commands:-

show listener status - lsnrctl status
start listener - lsnrctl start
stop listener - lsnrctl stop
check listener process - ps -ef | grep lsnr
test listener connection - tnsping SID
list all option for listener as below - lsnrctl help

The following lsnrctl operations are available
An asterisk (*) denotes a modifier or extended command:
start                             stop                        status
services                       version                   reload
save_config                 trace                      spawn
dbsnmp_start              dbsnmp_stop         dbsnmp_status
change_password       quit                        exit
set*                             show*

By default, listener will point to your local hostname and port 1521.
However there is always circumstances that error happens when someone customize the listener configuration such doing oracle patching and messed up the settings.
You can always check the listener configuration in listener file and confirm everything was right.

Try to check listener status to make sure your listener point to your listener configuration file in %ORACLE_HOME/112_64/network/admin.

If not, you can change it in listener cmd line.
lsnrctl > help > show > show current_version > LISTENER_A (different from listener config file)

change it by using > set current_listener LISTENER > save_config

An error occurred while processing option <i>SAP NetWeaver 7.0 including Enhancement Package 2 > Software Life-Cycle Options > System Copy > Oracle > Target System Installation > Distributed System > Based on AS Java > Database Instance( Last error reported by the step: System call failed. Error 1 (Not owner) in execution of system call 'lchown' with parameter (/oracle/SID/11204/network/admin, 150153, 650), line (231) in file (syuxcnode.cpp), stack trace: EJSController.cpp: 182: EJSControllerImpl::executeScript()

JSExtension.hpp: 1101: CallFunctionBase::call()

iaxxbfile.cpp: 319: CIaOsFile::setACL_impl()

syuxcdir.cpp: 42: CSyDirectoryImpl::setACL(const PSyACLInt &, ISyNode::eACLInheritMode, ISyErrorHandler *, ISyProgressObserver*)

syuxcnode.cpp: 165: CSyNodeImpl::internalSetACL(PSyACLInt)

syuxcnode.cpp: 188: CSyNodeImpl::setNativeACL(const NativeSecurityDesc_t & sd, ISyErrorHandler * pErrorHandler) const

Solution :

1. Check permission /oracle/SID/11204/network/admin and compare with other system

2. Try give full access on admin folder/files, then retry

3. Backup and recreate folder admin/files , then retry

3. Backup admin folder and retry then retry

PC Crash or Freezing of Computers and Their Solutions

A personal computer or a laptop has become an important tool for almost everyone these days. Using a PC is not a luxury anymore. In fact, it has now become a basic necessity. However, we do face problems with our computers every now and again. The biggest of all the computer problems is the system crash, or the dreaded blue screen.

Usually such problems might occur due to hardware or software issues. More often than not, it will be because of the operating system getting corrupted. Issues related to operating system usually arise if you use a pirated OS.

What are the issues that cause freezing of Windows?

There are a wide range of reasons that could cause freezing of PCs. It could be due to hardware problems, or due to system files getting corrupted. Sometimes, the systems freeze if we do not use them properly. For example, improper shutdown of computers can cause issues. If you repeat it several times, then there are chances of operating system getting corrupted. Once the OS is corrupted, then you will not be able to switch on your computer. It means that you will see a blank screen, or a blue screen display.

Damaged registry:

Another reason that might cause a system freeze is the damaged registry. Registry basically has the core information that manages overall operations of systems. When the registry gets corrupted, it will eventually lead to OS failures or system crash. The systems become unpredictable, and you will not be able to use them efficiently. Registry is the most useful part of your PC, especially in a Windows Operation System. It is more like a central repository that stores all the software settings and preference options.

System registry is the vital core of a computer that calls a number of settings each and every time an individual uses the system. Since the registry is used more frequently, there are chances of it getting corrupted. Even virus and spyware can attack the registry files and mess up the settings.

How to prevent system crash?

You will need to have considerable knowledge to fix the registry issues. However, there are many Registry Cleaning and repair programs that will help you resolve the registry issues with quite an ease. They are also very simple to use. All you will need to do is, download and install them on your system. Although, the registry is not the only reason for Windows crash, it is one of the main reasons for the problems associated with PC freezing.

Make sure that you use your computers in a systematic manner. Don't directly unplug your systems without shutting down the windows. Use a proper UPS System for power backup, so that your system does not get switched off automatically when the power goes off. Your UPS should give you sufficient time to save your works and shutdown your system. Update your antivirus regularly to download the latest virus definitions. Keep your system free from dust and moisture.

Not every malfunction you encounter with your PC requires a computer repair. Often times, the machine's failure to start are merely related to a faulty power source. The same goes for your laptops. So you should always try to diagnose the problem yourself first, before you submit your device for a computer or laptop repair. It would be a shame to waste all that money for a fix you could have done yourself. To help you out in this initial process, here are some guidelines you should follow.

a. If your computer or laptop does not turn on properly the first time or gives error messages you don't understand, perform a power cycle and see if the condition improves. Sometimes, glitches occur out of nowhere and the unit only needs to reboot in order to get its programs in order.

b. If the power cycle does not work, check the connection to the power source. It seems silly now, but a lot of times, people fail to restart their units or get internet connection, because they don't have their devices plugged in to the right outlet. For laptops, try turning it on using the cord without the battery, and also using the battery without the cord. If one of these power sources is corrupted, there is usually that tendency for them to confuse the system. For program errors, try to uninstall and reinstall the problematic application.

c. If all is in place and nothing is still working properly, swap compatible components with stocked ones or those from working units and see if the same problem occurs. Make sure to change one thing at a time, so you can identify what is working and what isn't. See, 70% of the time, computer errors are brought about by faulty cabling, connections and peripherals.

d. If the problem is mostly because of the platform you are working on, then create a backup copy of your files or save them in the D drive in your PC, and then reformat your computer or laptop.

e. If all of the steps above have not worked, keep your calm and don't lash out on your equipment. If you feel like you're about to get frustrated, then walk away from the problem and start taking down notes on what you have done and what you have observed. You can use this information to find out if there is anything else you can do. If you discover that there's nothing else in your capacity that you could try out, endorse your list to the computer or laptop repair technician so he doesn't waste his time and you don't waste your money.

Given that computers and/or laptops are machines incapable of self-preservation and regeneration, expect that you will have to submit them for laptop or computer repair every now and then to maintain their functions. Frequent upgrades may also be necessary, as well as the installation of a strong and sensitive antivirus program is advised.

Now, if you are dealing with a lot of units and very sensitive information, it would be smart if you employ an in-house networking expert to take care of your system on a regular basis. Or if you have the time, study how to keep your set-up in pristine condition to prevent crashes.

Everyone is aware of the power of the Apple iPhone, whether they own one or not. If you own or are thinking about buying an iPhone, read on for some great tips on using it and personalizing it.

You can download an app to allow your iPhone to upload files and save them as a storage option. Whether you want to carry videos, music, photos or documents, you can easily put them on your phone. You just connect your iPhone to your computer and transfer your files from your computer to your iPhone.

You do not have to be concerned about being lost once you have an iPhone. Mapping software comes with your iPhone so that you can immediately start pinpointing locations without having to worry about adding an app. You can find directions home or explore new regions you never considered before.

Interruptions many frequently bother you while you are using your iPhone. It might be more important to wrap up your current project than to check out the notice. You can get rid of that notification easily. You just wipe away the pop up screen.

Did your iPhone freeze or is unresponsive? If it is unresponsive to clicking the Home button, hold down the Home button. This will automatically close any locked apps. If this does not work, hold these buttons simultaneously for five more seconds. Doing this should cause the Apple to pop up on the screen and your mobile device will reset.

For a quick way to add, subtract or multiply, don't forget that calculator function on your iPhone; it's located in your phone's utilities section. When held vertically, the calculator is a standard calculator, but when held horizontally, it becomes a highly-functional scientific calculator.

If you are unhappy with Siri's mechanized voice, know that there are other choices. Siri can be found in General Settings. Once you do this, you can set the Siri's language to French, German, or English. You can even change her voice, if you wish, to reflect a British or Australian accent. In fact, the British version of Siri has a male voice.

You may run into a problem in which you are unable to power up your iPhone by pressing its Sleep/Wake button. Fortunately, a hard reset remedies the problem. Hold down the Sleep/Wake button and the Home key at the same time. Your phone will shut down, then restart if everything was able to reset properly.

One of the useful things you can do with your iPhone is share pictures with your various contacts. You can do this in two different ways. First, save your image and add as an email attachment, or you can upload it to your application on Facebook so everyone can see.

As you can see from the advice in the above article, there is always something new to learn about the most effective way to use an iPhone. If this is the case for you, all that is left to do is to put the information to use to get the most out of your phone, or decide if the phone is right for you.

The humble CD was invented way back in the 80s. High time we ditch those archaic media and switch to electronic storage right? A good MP3 or MP4 player these days is much more than just that. These little devices are multifunctional power tools too. Many have FM (with recording), ability to view photos, videos, function as a dictaphone and as portable storage. 
The market is flooded with options (including Chinese ones) of different types, brands, memory capacities, features and prices. And this is exactly the reason why this buying guide should help you.

The basic requirements
A media player is actually and definitely not one-size-fits-all. Available in different shapes and sizes, these players make use of different types of memory and supports varying formats. So the idea is to realize your requirements as well as the budget, and then buying the suitable media player. Broadly, the market showcases a slew of media players comprising a PMP with huge storage space to accommodate voluminous data like music, videos, pictures etc. Apart from this, if you want something light and small, you can get a flash-based player, which is more durable, smaller and longer lasting. Moreover, Hard drive-based players will give you more megabytes per rupee that you spend.

What type?
If you're looking to take along your MP3 player for your morning jogs and warm up exercises in the gym, a flash-based player would be ideal since they don't skip a beat, are resistant to shocks and temperature variations and easy to carry owing to their smaller size. Moreover, they are engineered to offer comfort with no moving parts and battery backup to look for. Some examples of small flash based players are the Creative Zen Stone Plus, iPod Shuffle, Samsung U3, iRiver iFP-899, Zune HD and Sandisk Sansa Clip. To make sure that you sweat out without hassles, the player is designed in such a way that they can be clipped onto a piece of clothing or be strapped on your arm for your daily workout.
Adding something novel to the list is the new Sony NWZ-W250 series, which is also apt for people looking for something voguish while sweating out. The series comes with new and improved water-resistant exterior and design, making it comfortable while exercising. Moreover, the player comes in wearable style and is completely free from tangled wires, hence giving utmost comfort and less stress while working out.
There are larger flash-based players with color screens that can display photos, text and video too. For example the Philips GoGear SA1ARA08, Samsung Yepp T10, Sandisk Sansa View, and the Apple iPod Nano.

Music enthusiasts who have an extensive music collection can opt for a 80GB or 120GB player like the Apple iPod Classic, Creative Zen Vision M or Microsoft Zune. These players usually have bigger screens, extra features like games, Wi-Fi and organizer and feature a longer battery life to keep you company on long journeys.

Spanning across the slew of portable media players with memory upto 80 GB, one can come across Archos 605 Wi-Fi PMP and Archos 704 Wi-Fi PMP. The versions lie mid-way between a PC and a TV, helping in streaming of content from PC to the PMP. Other versions also support recording of TV programmes and songs as well as videos.
How much storage?

You'll always need more, is something you should remember. Get the maximum storage space that you can afford, and if the player has a card slot to further expand the memory, nothing like it! If you have a larger memory capacity, you carry a larger number of files, but you can also carry higher quality (high bitrate) files with ease. Plus the advantage that you can use the extra capacity as portable storage. Generally the thumb rule applied is 1 MB of memory will give you approximately one minute of music playback with standard quality files. If you are going to watch a lot of video on your device, the amount of space you need will do up dramatically.

Not just audio, I want more
In addition to music, if image viewing and video playability is what you need, there are many options with flash-based players now. Almost every flash based player with a large color screen will support popular photo formats and video. Keep in mind that many of these players will not natively play any video files stored on your PC. You will have to convert them to a smaller size and compatible format using (usually) supplied software.
Display

A 2.5-inch screen is good enough for viewing photos and videos, but the larger the better. The Apple iPod Touch has a 3.5-inch (Diagonal) widescreen and is great for photos and videos. You can also install apps on it and use it like a PDA. If you really want power and flexibility, go for the Cowon A3 which comes with a huge 4" TFT-LCD display, supports almost all the formats, has TV-out and direct line in recording from any video source. Even the Creative Zen Vision W has a bigger 4.3" high-res screen, native DivX support and TV-out.

Size does matter after all
Weight, size and in general the form factor of your PMP is a crucial factor. This will dictate how much you carry it around and how useful it becomes, especially if you travel around a lot. There can sometimes be a huge variation in weight (from 30 to 350 gms) and form factor (the size of a thumb to a pack of cards or even bigger)

Can my Lithium-ion go on and on?
Lithium batteries are common among all players and pack in more power. The one worrying trend is the built in, non user-replaceable batteries. The first Creative Zen hard drive players had removable batteries so that you could easily carry a spare or replace it when the time came. Now, if you run out of juice while on the move, you're stuck.

The Extras
If you want a player to function as your complete entertainment center, the choices are narrowed down. The Apple iPod Touch has many of the features that a PMP has plus more. It has built in Wi-Fi (so you can configure your email on it, browse the web, watch YouTube videos etc). And thanks to the thousands of apps available in the App Store (both free and paid), you can add on functionality and games, just like you do with a smartphone.

Other players like the Cowon A3 and Creative Zen Vision W have extras like games, FM (with voice and FM recording), an organizer (clock, calendar, alarm) and in some cases even a document Viewer.
Some other often neglected features include an equalizer (if you'd like to customize your music), quality bundled earphones, speakers and maybe in some cases, even built in Bluetooth to wirelessly transmit audio to compatible headphone.