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Oracle recommends that you have four mount points to fully comply with the OFA guidelines. The first of these is for locating the Oracle Database 10g server binaries, and the other three are for holding the database files. Let s say you re creating mount points for a database named prod. In this case, the three mount points designated for the data files can be clearly named as follows: /u01/ oradata/prod, /u02/oradata/prod, and /u03/oradata/prod. This nomenclature makes it clear that these file systems are meant for Oracle databases and that the data for different databases is stored on separate mount points.

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size 16 // attributes elided for clarity here } Notice that both proxy types for HWND__ and tagRECT are defined as value types (they extend System::ValueType) However, the only information specifying the binary layout of the type is the size For the HWND__ type, the metadata size 4 is used because this type contains one 4-byte data member named unused Since tagRECT has four data members of 4 bytes in length, you can see that the metadata is size 16 Using this metadata, the JIT compiler knows how much memory to allocate on the stack for each local variable and each parameter A value type instance on the stack does not have an object header or any other runtime predefined data All bytes of a value on the stack can be gotten and set with IL instructions.

Now the script gathers the user s encrypted password from the passwd file and its age from the shadow file.

In Linux and UNIX systems, a home directory is the directory that a user lands in when he or she first logs in. All home directories should follow the naming convention /pm/h/u, where pm is the mount point name, h is a standard directory name, and u refers to the directory owner. For example, the /u01/app/oracle directory could be the home directory for the user named oracle. Note that the entire home directory for each user (e.g., /u01/app/oracle) is denoted by the letter h for the purposes of the following discussion.

During the installation, you ll be prompted for the path for several key Oracle directories, and I ll briefly discuss these in this section. You can use any directory structure you wish for these directories, but, as you ll see, following the standard directory structures recommended here makes it easy to administer multiple databases and software versions on the same server.

At the root of the Oracle directory structure is the directory called Oracle base, denoted by the environmental variable ORACLE_BASE. The Oracle base directory is the top directory for all Oracle software installations. Oracle recommends that you use the form /pm/h/u. In the standard Oracle base directory syntax, this is what these variables stand for: pm: The mount point name h: The name of a standard directory u: The directory s owner s name The default owner of the Oracle base directory is usually a user named oracle (you ll learn more about this user later on), and the standard directory is usually named app. Therefore, the Oracle base directory usually has the form of /pm/app/oracle (for example, /u01/app/oracle). The Oracle installer will take this as the default Oracle base and install all the software under this base directory. You can create the Oracle base directory by using the following commands (assuming that u01 is your mount point and user oracle is the Oracle software owner): # mkdir -p /u01/app/oracle # chown -R oracle:oinstall /u01/app/oracle # chmod -R 775 /u01/app/oracle

The Oracle home directory, denoted by the ORACLE_HOME environment variable, is very important, since the Oracle server software executable files and other configuration files are located under this directory. For example, the $ORACLE_HOME/bin directory holds the executables for the Oracle products, and the $ORACLE_HOME/network directory holds the Oracle Net Services files.

cur_pass_word=`grep "^${user}:" $pswd | cut -d: -f2` old_pass_word=`grep "^${user}:" $shad | cut -d: -f2` pass_days=`grep "^${user}:" $shad | cut -d: -f3` test "$DEBUG" != "" && echo DEBUG: \ $user, $cur_pass_word, $old_pass_word, $pass_days