What does %cpu mean in top command

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3166 apache 15 0 29444 6112 1524 S 6.6 2.4 0:00.79 httpdPID – process ID of the process
in this above command my database showing %cpu% 90% for an oracle process.Please anyone can explain me what does it mean and is it critical

Hi;
As Aman mention, make some googling my friend. Your answer there ;)
From googling:
top command explained << video
www.metacafe.com/watch/6896501/linux_top_command_explained/
Tutorial:
http://www.linux-masters.com/2009/09/top-command-explained.html
http://linux.about.com/od/commands/l/blcmdl1_top.htm
http://www.tech-faq.com/how-to-use-the-unix-top-command.html
Regard
Helios

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HT201401 i have a lock symbol with an arrow circle around it what does it mean in top right corner

i have a lock symbol with an arrow circle around it what does it mean its in the tpo right corner of phone

Page 11 of the user guide.
http://manuals.info.apple.com/en_US/iphone_user_guide.pdf

What does this mean on top of my Mac Home Screen?

Please see above, and how do I remove this?

It looks like the Time Machine icon, with an alert symbol in the center, indicating that the backup drive isn't available, or that there was some problem with the last backup.

Images have ? symbol on the top right corner of the thumbnail what does this mean and how do I remove it?

Q - My images have a
? symbol on the top right corner of the thumbnail what does this mean and how do I remove it?
A - The
? symbol is used to identify a file that Lightroom can no longer access; probably because it has been moved using OS drag/drop or Move command rather than Lightroom.
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? symbol will cause a small dialog will appear. This dialog will provide information as to where the file was originally located along with an option to find (Locate) it again.
As you'll quickly realise, clicking the
? symbol is fine for finding individual files that may have been relocated, but not for large numbers. There must be a better way
Look at the Folder panel (left side of Library module) and you should find that the folder/subfolder containing the files that Lightroom can no longer find are shown in Red text. It is the red text that Lightroom uses to help you identify a folder/subfolder that contains files that it has lost track off.
On the Mac you should
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Choose button and allow Lightroom to do its stuff.
The method described above also applies to the PC version although the dialog is called
Browse for Folder and the
Choose button is replaced by
OK.
You can avoid getting into a situation were Lightroom looses track of your folders/subfolders by using a variation of above.
A tutorial demonstrating above can be found
Here

Q - My images have a
? symbol on the top right corner of the thumbnail what does this mean and how do I remove it?
A - The
? symbol is used to identify a file that Lightroom can no longer access; probably because it has been moved using OS drag/drop or Move command rather than Lightroom.
Click the
? symbol will cause a small dialog will appear. This dialog will provide information as to where the file was originally located along with an option to find (Locate) it again.
As you'll quickly realise, clicking the
? symbol is fine for finding individual files that may have been relocated, but not for large numbers. There must be a better way
Look at the Folder panel (left side of Library module) and you should find that the folder/subfolder containing the files that Lightroom can no longer find are shown in Red text. It is the red text that Lightroom uses to help you identify a folder/subfolder that contains files that it has lost track off.
On the Mac you should
Ctrl-click (right-click when using two button mouse) the folder/subfolder, a pop-up menu will appear. From the pop-up menu choose the command
Locate Missing Folder, a dialog should appear. The dialog gives you access to every hard disk connected to your computer or CD/DVDs if they're in the tray. Use this dialog to navigate to the location where the folder is now located, then select this folder (not the files). Finally, press the
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OK.
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How do I back up the music and apps etc. I restored my computer and I reinstalled iTunes, I was told something about a terminal command line, what does that mean? Please help

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- Transfer iTunes purchases to the computer by:
iTunes Store: Transferring purchases from your iOS device or iPod to a computer
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Copy music
- Connect the iPod to the computer and make a backup by right clicking on the iPod under Devices in iTunes and select Back Up
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Are you sure you have a 3G iPod? A 1G iPod can only go to iOS 3.1.3
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I have this icon on the top right of my screen that is a lock with like a circle and arow around it that wont go away, what does it mean?

I have this icon on the top right of my screen that is a lock with like a circle and arow around it that wont go away, what does it mean?

Here's the answer:
https://discussions.apple.com/message/15098215#15098215
https://discussions.apple.com/message/15622244#15622244

On my IPhone 5s, there is a symbol at the top of the screen and it looks like a circle with a lock inside. What does it mean and how do I remove it?

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You mean the Control Center. As was said ...slide up with your thumb from the home button and a gray box should open (i.e. Control Center). There you can turn the orientation lock Off or On. You can also use the Flashlight or turn Bluetooth on or off, and other functions.

"Top Songs" category, on an artist's cd, on Itunes? What does it mean?

When I look at a cd, on itunes, there is a "top songs" category, for the cd. I notice that the order of the songs changes, week to week, in the "top songs," categgory, for the artist's cd. What does it mean? For example, does the first song listed mean it is currently the top selling song, for the artist's cd?

Try here first to get iTunes to see the iPod,
iPhone, iPad, or iPod touch: Device not recognized in iTunes for Windows
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iPhone, iPad, iPod touch: Device not recognized in iTunes for Mac OS X
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In Numbers, I can see my documents but they have the top right corner turned over with a down arrow, what does that mean?

In Numbers, I can see my documents but they have the top right corner turned over with a down arrow, what does that mean? I touch it and nothing happens.
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Hallo Apple, what does it mean this Message0x7fff7500b300 resumeBackgroundConversion: background conversion started/resumed for lv 82832E6C-B6AC-46A6-8836-715414EBE8F4. Because I have a Problem with my CPU: Kernel_task and corestoraged

Hallo Apple,
what does it mean this Message0x7fff7500b300 resumeBackgroundConversion: background conversion started/resumed for lv 82832E6C-B6AC-46A6-8836-715414EBE8F4.
Because I have a Problem with my CPU: Kernel_task and corestoraged.

I'm having this same issue. I also have this line in my log, which is curious:
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My 2010 27" iMac running Yosemite won't wake up from sleep.

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Flashing file folder on boot, what does it mean?

flashing file folder on boot, what does it mean?

That folder with the question mark icon means that the MacBook can't find the boot directory. That can either mean it can't find the hard drive or the Operating System data on the hard drive is somehow corrupted.
Put your install DVD into the optical drive (CD/DVD drive) and reboot. Be sure to either use the disc that came with your Mac, or, if you installed a later Mac OS X version from disc, use the newer disc. As soon as you hear the boot chime, hold down the "c" key on your keyboard (or the Option Key until the Install Disk shows up) until the apple shows up. That will force your MacBook to boot from the install DVD in the optical drive.
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For information about the Other category in the Storage display, see this support article. If the Storage display seems to be inaccurate, try rebuilding the Spotlight index.
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iPhoto ▹ Empty Trash
Do the same in other applications, such as Aperture, that have an internal Trash feature. Then restart the computer. That will temporarily free up some space.
According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation—not the mythical 10%, 15%, or any other percentage. You also need enough space left over to allow for growth of the data. There is little or no performance advantage to having more available space than the minimum Apple recommends. Available storage space that you'll never use is wasted space.
When Time Machine backs up a portable Mac, some of the free space will be used to make local snapshots, which are backup copies of recently deleted files. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as Backups. The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself. If you followed bad advice to disable local snapshots by running a shell command, you may have ended up with a lot of data in the Other category. Ask for instructions in that case.
See this support article for some simple ways to free up storage space.
You can more effectively use a tool such as OmniDiskSweeper (ODS) or GrandPerspective (GP) to explore the volume and find out what's taking up the space. You can also delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one. Note that ODS only works with OS X 10.8 or later. If you're running an older OS version, use GP.
Deleting files inside an iPhoto or Aperture library will corrupt the library. Any changes to a photo library must be made from within the application that created it. The same goes for Mail files.
Proceed further only if the problem isn't solved by the above steps.
ODS or GP can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.
Back up all data now.
If you have more than one user account, make sure you're logged in as an administrator. The administrator account is the one that was created automatically when you first set up the computer.
Install the app you downloaded in the Applications folder as usual. Quit it if it's running.
Triple-click anywhere in the corresponding line of text below on this page to select it, then copy the selected text to the Clipboard by pressing the key combination command-C:
sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
sudo /Applications/GrandPerspective.app/Contents/MacOS/GrandPerspective
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
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I don't recommend that you make a habit of doing this. Don't delete anything as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance.
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What does "wheel" mean for custom access

What does "wheel" mean when allowing custom access to a folder?

wheel= admin
In computing, the term wheel refers to a user account with a wheel bit, a system setting that provides additional special system privileges that empower a user to execute restricted commands that ordinary user accounts cannot access. The term is derived from the slang term big wheel, referring to a person with great power or influence. It was first used in this context with regard to the TENEX operating system, later distributed under the name TOPS-20 in the 1960s and early 1970s.
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What does %cpu mean in top command

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