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The proxy type generated by the C++/CLI compiler for the native structure HWND__ has the attribute NativeCppClassAttribute, which the C++/CLI compiler needs to differentiate between these proxy types and other managed types Notice that the managed proxy type does not contain information about the field members of the native type To understand how fields of a native class are accessed in managed code, consider the function GetWindowRect from the Win32 API: bool GetWindowRect(HWND hwnd, PRECT pRect); The argument type PRECT is defined as follows: typedef struct tagRECT { LONG left; LONG top; LONG right; LONG bottom; } RECT, *PRECT; The managed proxy type for tagRECT looks very similar to the proxy type for HWND__: class private sequential ansi sealed beforefieldinit tagRECT extends [mscorlib]SystemValueType { .

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If you ve ever walked into an organization and taken over a database installation that had files stored all over the place, you ll immediately recognize the benefits of the OFA If the previous DBA has adhered to the OFA guidelines, any new hire can easily go to the standard directories and look for various types of information If your database is growing and needs more space, following the OFA guidelines will ensure that space will be added in the right directories with the standard naming convention The standardization of directory and file placement leads to minimal administrative overhead and helps create more efficient databases When you separate categories of files into independent UNIX subdirectories, files in one category are minimally affected by operations on files in other categories The usefulness of the OFA guidelines becomes particularly clear when you are trying to manage multiple databases on the same server.

You can simplify administration by using the structured OMF system for maintaining your files Creating new databases won t pose any problems, because each database is separated into its own directories, simplifying user administration and the creation of new databases The OFA guidelines contribute to database reliability, because your hard drive failures won t propagate to whole applications they help in balancing the load efficiently across the disk drives, thereby enhancing performance and minimizing contention The OFA guidelines also promote the efficient separation of administrative files from several databases by using standard naming conventions Another big benefit in using the OFA guidelines is that they enable you to simultaneously run multiple versions of Oracle software You thus can run your production and test databases using different versions of Oracle on the same server.

user_exist=`grep "^${user}:" $shad | cut -d: -f1` if [ "$user_exist" = "" ] then echo "$user:$cur_pass_word:$days_since_epoch:0:90:7:::" >> $shad test "$DEBUG" != "" && echo DEBUG: Missing $user, adding to $shad fi

Before plunging into a detailed discussion of the OFA concepts and the implementation details, you should be familiar with the following terms: Mount points: These are directories in the UNIX file system that are used to access mounted file systems Product files: These are the many sets of configuration and binary executable files that come with the Oracle software Versions: These can refer to entirely different releases or to point upgrades (patch upgrades) For example, 92010 and 101020 are different versions of the server software Oracle data files: These are the UNIX files that hold Oracle table and index data Oracle administrative files: These include the database log files, error logs, and so forth Tablespaces: These refer to the logical allocation of space within Oracle and are discussed in detail in s 4 and 5..

If you are using NFS file systems, you should know that these can t guarantee that writes always complete Tip successfully, leaving open the possibility of file corruption. Unless your storage vendor is listed in the Oracle Storage Compatibility Program (OSCP) member list, don t install the software on NFS file systems.

Mount points are the directory names under which file systems are mounted by the UNIX operating system. That is, the mount point refers to the top-level directory of a file system. Oracle recommends that all your Oracle mount points be named according to the convention /pm, where p is a string constant to distinguish itself from other mount points, and m is a two-digit number. This means you can name your mount points /u01, /u02, /u03, and so on. Keep the mount point names simple, and don t include any hardware-related information in the mount point name. That way, changing your disk system hardware will not affect the mount point names.

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