Patches, fixes, service packs, and updates are all the same thing—free software revisions. These are intermediary solutions until a new version of the product is released. They may solve a particular problem, as does a security patch, or change the way your system works, as does an update. You can apply a so-called hot patch without rebooting your computer; in other cases, applying a patch requires that the server go down.
Is It Necessary?
Because patches are designed to fix problems, it would seem that you would want to download the most current patches and apply them immediately. That is not always the best thing to do. Patches can sometimes cause problems with xisting, older software. Different philosophies exist regarding the application of the newest patches. The first philosophy is to keep your systems only as up-to-date as necessary to keep them running. This is the “if it ain’t broke, don’t fix it” approach. After all, the point of a patch is to fix your software. Why fix it if it isn’t broken? The other philosophy is to keep the software as up-to-date as possible because of the additional features that a patch will sometimes provide.
You must choose the approach that is best for your situation. If you have little time to devote to chasing down and fixing problems, go with the first philosophy. If you always need the latest and greatest features, even at the expense of stability, go with the second.
Where to Get Patches
Patches are available from several locations:
You’ll notice in every case that the source of the patch, regardless of the medium being used to distribute it, is the manufacturer. You cannot be sure tha patches available through online magazines, other companies, and shareware websites are safe. Also, patches for the operating system are sometimes included when you purchase a new computer.
How to Apply Patches
Just as you always need to plan for an upgrade, you need to plan for a patch. Never blindly install patches (or any other new software) without examining the potential impact on the network. Although patches are designed to fix known problems, they may create new ones. It is best to try patches on a test network or system before installing them on all systems on the network.
Follow these steps to apply a patch:
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