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This chapter deals with the installation of Oracle Database 10g server software on a Red Hat Linux server. The installation process is virtually the same on all the UNIX variants, like HP-UX, Sun Solaris, and so on. I also show a Windows installation in 20. Installing the Oracle client is a much simpler task. When you invoke the Oracle installer, simply choose the client installation option instead of the server installation option.

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I m assuming that you, or your organization, have bought the necessary software from Oracle Corporation. If that s the case, the software CDs will have been sent to you by Oracle. If you just want to try the Oracle database software, however, you don t have to purchase a thing. You can download the Oracle server software freely from the Oracle Technology Network (OTN) web site at http://technet.oracle.com/. The OTN site has complete enterprise versions of the server software for all UNIX, Linux, and Windows servers. In addition, you can check out the operating system installation and administration manuals at http://tahiti.oracle.com.

You can save yourself a lot of grief during the installation process by carefully reviewing the Oracle installation manuals for your particular operating system. These manuals are very clear and provide you with a detailed map of the installation process. You ll need to review three sets of installation documents: Oracle Installation Guide for your operating system: This document will provide you with information about the system requirements, UNIX users and groups, and other requirements, and it will step you through the installation and post-installation processes. Release Notes and Release Notes Addendums: The Release Notes and any related Addendums are very important, and they cover the most recent changes to the installation and upgrade procedures for many components of the Oracle database server and client. The last-minute changes that are covered in the Release Notes (and related Addendums) may make the difference between a successful installation of the various components and an error-prone installation. README files: The README files are usually in the \doc\readmes directory on the first product CD-ROM. The Release Notes and the README files inform you about any potential restrictions, limitations concerning the installation, and the use of new Oracle Database 10g software.

The Installation Guides and the Release Notes are available at the OTN site (http://technet.oracle.com/), or you can access them by going to http://docs.oracle.com/ or http://tahiti.oracle.com/.

To properly use native structures and classes in managed code, the C++/CLI compiler generates managed proxy types. As an example, consider the following function from the Win32 API: HWND GetDesktopWindow(VOID); The return type HWND is defined by the Win32 API as a pointer to a structure named HWND__: typedef struct HWND__ *HWND The structure HWND__ is defined as follows: struct HWND__ { int unused; }; To use the return type HWND of the function GetDesktopWindow in managed code, the C++/CLI compiler generates a managed proxy type: .class private sequential ansi sealed beforefieldinit HWND__ extends [mscorlib]System.ValueType { .size 4 // [NativeCppClassAttribute] .custom instance void [mscorlib] System.Runtime.CompilerServices.NativeCppClassAttribute::.ctor() = ( 01 00 00 00 ) // other attributes are elided for clarity }

Now we re in the core of the program. The loop iterates through the current passwd file and updates the corresponding entries in the new shadow file.

You should focus on two key operating system resources when you are planning a new Oracle installation: disk storage and the amount of memory (RAM) that your systems need on the server machine. The amount of total physical space (disk storage) will depend on the size of your applications and data. The Oracle software itself takes approximately 1.5 2 gigabytes of disk space, depending on the operating system. You also have to run one or more databases with this software, so the total space you need will depend on the requirements for all the databases considered together. You need to determine the sizes of the tables and indexes and the number of stored procedures you will have in the database. You also need to find out as much as you can about the growth expectations for your data over time. If you have a database that you anticipate will grow quickly, you need to make allowances for that. Plan ahead, because disk space is something that needs to be budgeted for, and you may find yourself scrambling for space if you are way off the mark.