Oracle Database Preinstallation Requirements. This chapter describes the tasks that you must complete before you start Oracle Universal Installer. How to Determine Java Version. Multiple copies of Java can be installed on a single computer, and, if you have more than one browser, every one of them could be using. Method%201%20-%20NET%20Version.jpg' alt='How To Determine Oracle Version Installed Base' title='How To Determine Oracle Version Installed Base' />Setting Oracle Environmental Variables. Variables. In order to accomplish an Oracle install. The. following table lists the variables that are frequently set when using. Oracle Software. ENVIRONMENTAL VARIABLEDESCRIPTIONLDASSUMEKERNEL  This variable must be set in order to run. Oracle tools on Linux such as Universal Installer. LDLIBRARYPATHThis variable allows many Oracle programs. Driver Adaptador De Red Windows 7 Ultimate 64 Bits'>Driver Adaptador De Red Windows 7 Ultimate 64 Bits. ORACLEBASEThis variable is required to perform an. Oracle software. It is used to indicate the base. Oracle software. Unless the. Inventory directory is. ORACLEBASE. ora. Inventory, and is the. Oracle catalogs its many installed components. ORACLEHOMESetting the ORACLEHOME is not necessary. However, setting it will pre determine. After Oracle software is installed, this variable helps Oracle. Reviewing Information About This Guide. This guide describes how to install Oracle Database by using the default installation options. Tasks Described in This Guide. Click-on-Install.png' alt='How To Determine Oracle Version Installed Base' title='How To Determine Oracle Version Installed Base' />For example, to make a database connection, Oracle. ORACLEHOMEnetworkadmin. ORACLEHOME is required to run many. SQLPLUS and RMAN. ORACLESIDWhen this variable is set, the user does. SID name in the connect string. For example. sqlplus systempasswordmydbcan be shortened to sqlplus systempassword. Although it is possible to set ORACLESID. It can be. set on the fly with the racenv script. PATHThis variable is used by Linux to find. For example, in order to run sqlplus from a command. Table 4. 4. Variables frequently set when. Oracle. When a user logs into Linux, a few scripts are run. Conlog Electricity Manual more. One such script is the. Use the gedit oracle. Oracles login script. Edit it so that the lines. Figure 4. 1. 3 are appended to the text. The export command is used to set an environmental. To refer to a variable that has been set in a script or a. It is a. common practice in BASHscripting. Remember, Linux is case. ORACLEHOME. Command from Oracles Login. With the. oracle. Oracle software will be in place. On occasion, the. Doing so will make the root login a child process of the Oracle login. However, roots standard PATH variable, the one. Instead, root. will get the Oracle users PATH variable, which is different. Thus. after using the sucommand to switch to root, commands such as. Optimal Flexible ArchitectureOFA is a directory. Oracle software in predictable. Oracle touts many advantages to using OFA. First. implementing the OFA standard ensures that future administrators of. This is a. good reason to implement OFA using the exact directory names suggested. Oracle. Second, OFA makes adding new versions of Oracle software. Oracle. is possible and easy. Figure 4. 1. 4 displays the OFAstructure for an installation with two versions of Oracle. The databases are named. On a typical production database server, there. The disk mounted at u. The database data files of the various. Oracle made a change to OFAwith the release of Oracle 1. Now, the ORACLEHOME for. The. sub directory is called db1. The reason for this change is that it. It also. allows for the install of a different Oracle product in a different. For example, Oracle Client software could be installed. To create the necessary directories for an Oracle. Figure 4. 1. 5 on each node. Directory. Structure. There is small number of files that Oracle places. OFA. directory structure. After an install, the files listed in the. PATH AND FILEDESCRIPTIONetcoratab  9ivaroptoracleoratab     user created link only 1. The oratab file is used to identify each. SID with its associated ORACLEHOME. Config. loc 9ietcoracleocr. This is a text file that identifies the. Inst. loc 9i 1. Identifies the location on disk of the. Oracle inventory files and identifies the OS user group that owns. Oracle install. For a 1. ORACLEHOME directory. These scripts are used to set. The oraenv and racenv scripts are Bash. The coraenv script is. C shell. The dbhome script is used by the other three. Table 4. 5. Files shown, after an install. The code depot of this book includes the Oracle. Patch 3. 00. 68. 54. Refer to Appendix B for download instructions. The. Oracle 9i software install will fail if this patch has not been. To install the patch, follow the example in. Figure 4. 1. 6. Ensure that the gcc program is available. If the patch failed, most system commands such as. Figure 4. 1. 7 demonstrates the error and what can be. The patch must still be successfully run so. Learn More about PC RAC. If you want to learn RAC at home, get the bestselling book Personal. Oracle Real Application Clusters by Edward Stoever. You can buy it direct from the publisher for 3. Oracle tuning scripts.