android barcode scanner javascript Applying Patches in Software

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Applying Patches
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Patches can be applied with the Opatch utility, or with Database Control; the Database Control method in fact uses Opatch behind the scenes The Opatch utility is installed into the directory ORACLE_HOME/Opatch and launched by running the executable file opatch (or opatchbat on Windows) The prerequisites are that the ORACLE_HOME environment variable must be set (note that on Windows it is not sufficient to have this as a registry variable, it must be set within the operating system session); the Java Runtime Environment 14 or later must be available; a few standard operating system utilities must be available To test the prerequisites, use the LSINVENTORY command as in Figure 19-4
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FIGURE 19-4
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Using Opatch to inspect the inventoried software
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Manage Patches
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In Figure 19-4, Opatch is being run on a Windows system The utility was invoked by specifying the full path, using the ORACLE_HOME environment variable, and the LSINVENTORY command This shows summary information regarding what has been installed, including any interim patches (none, in the example) To obtain much more detailed information, use the detail switch:
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%ORACLE_HOME%\Opatch\opatch lsinventory detail
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All patches will come with a READMETXT file of instructions detailing how to install the patch These instructions will include detail on whether the database should be open or shut down while the patch is applied To apply a patch once it is downloaded from MetaLink and expanded (it will have come as a ZIP file), run Opatch as follows:
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opatch apply path_to_patch
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where path_to_patch is the directory where the patch was expanded To apply a patch with Database Control, the patch must first be downloaded to a staging area The staging area is a location where the patch is staged stored locally, prior to application To reach the wizard that will stage and apply the patch, from the database home page take the Software And Support tab, and then the Stage Patch link in the Database Software Patching section This will launch a six-step wizard:
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Select patch Select destination Set credentials Stage or apply Schedule Summary
The wizard will connect to MetaLink using stored credentials, download the patch, and create a job to apply the patch The illustrations that follow show examples of using the wizard to apply a patch
Patches are applied with the Opatch utility even when working with Database Control, you are still using Opatch
1 First, enter the patch number and operating system (some patches come in versions that are operating system specific)
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Intelligent Infrastructure Enhancements
2 Choose the targets to which the patch should be applied The choice will be limited to targets appropriate for the patch (in the example, database instances)
Manage Patches
3 Provide credentials These will be either operating system credentials, database credentials, or both depending on the patch
4 Decide whether to apply the patch or only stage it for future use
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Intelligent Infrastructure Enhancements
5 Schedule the job that will download and apply the patch
6 The final step is to view a summary of the operation
Manage Patches
EXERCISE 19-2 Download and Apply a Patch
In this exercise, you will download a patch and apply it Oracle Corporation provides a dummy patch for this purpose At the time of writing, this is only available for 32-bit Linux If you are working on another operating system, don t worry you will get practice in patching soon enough when you start working on a live database 1 Log in to MetaLink 2 Take the Patches & Updates tab, and then the Simple Search link 3 When prompted for a Patch Number/Name, enter 6198642 When prompted for a Platform Or Language, select Linux x86 from the drop-down box Click Go 4 Click the Download button, shown in the next illustration, to download the patch from MetaLink to an appropriate directory
5 From an operating system prompt, unzip the patch It will unzip into a directory named 6198642
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Intelligent Infrastructure Enhancements
6 Shut down the database and the listener: Opatch will not proceed if these are running 7 Apply the patch:
$ORACLE_HOME/OPatch/opatch apply patch_directory
where patch_directory is the directory into which the patch was unzipped The next illustration shows this step, and the start of the output
8 Confirm the patch application with this command:
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