Pre-Installation Checklist for ORACLE
Database Server 8iR3
Hardware Requirements

The following table represents the hardware requirements for the system on to which
Oracle wil be installed.
RAM 32 MB required.
Swap Space three times RAM is recommended.
Disk Drives 4 devices: one for the Oracle software three forcreating an OFA-compliant database.
Disk Space At least 400 MB required.
CD-ROM A CD-ROM drive supported by LINUX is required. 
OS Software Requirements

There are also specific requirements for the Linux operating system installed on
target machine.  These requirements are listed here.
	  Operating System LINUX 2.0.33 or above

	  System Libraries GNU C Library, version 2.0.6

	  TCL library (libtcl.so), version 8.0.2-16 
Operating System and Installation-Specific
Issues and Restrictions

The following is a list of restrictions and generals issue which must be addressed
before installation to the target machine can begin.
	  Concurrent Process Limit
	     The number of concurrent Oracle processes is limited by the system’s
	   imposed limit for the maximum number of semaphore identifiers.

	  File Systems
	    The Oracle Server must be able to verify that file writes have been made to disk.
	    File systems that do not support this verification are not supported for use with
	    Oracle, such as NFS based on the UDP protocol.

	  Very Large Files
	    LINUX does not support large files (greater than 2 GB).

LINUX Environment Summary

Here is a list of ENVIRONMENT variables and the values to which they must be set
before installation may begin.
VARIABLE
SETTING
 
Mount Points
 
At least four mount points, all at the same  level of the directory structure.
One is for the software, three are for an OFA-compliant database.
 
OS Groups for Oracle Roles
 
A OS group is required for the OSDBA role, and is usually named dba.
 
OS Accounts
 
A OS account dedicated solely to installing  and upgrading the Oracle system.
The account must be a member of the group used by OSDBA.
 
Local bin directory
 
A directory for software shared among Oracle users. 
The default location for this directory on Intel-LINUX is /usr/local/bin.
 
oratab file
 
Contains information about Oracle instances.
 
Permissions for File Creation
 
Set umask to 022.
 
DISPLAY
 
Set to the machine name and monitor of the station from which you are connecting
 to the server machine.
 
LD_LIBRARY_PATH
 
Required for Oracle products using shared libraries.        
Must include $ORACLE_HOME/lib.
 
ORACLE_BASE
 
Not required, but recommended as part of an OFA-compliant installation.
 
ORACLE_HOME
 
Set to the directory where the Oracle software will be installed.
 
ORACLE_SID
 
Specifies the instance name, or sid   of  the Oracle Server.
Must be unique for Oracle instances running on same machine.         
Oracle Corporation recommends using four characters or fewer.
 
ORACLE_TERM
 
Required by all character mode and Motif mode Oracle products. 
ORA_NLS33
 
Required when creating a database with character set other than US7ASCII. 
Set to $ORACLE_HOME/ocommon/nls/admin/data.
 
PATH
 
The search path must include all of the following:        
$ORACLE_HOME/bin, /bin, /usr/bin, and /usr/local/bin
 
SRCHOME
 
Should be undefined when running the Installer.       
 If SRCHOME is set, the Installer defaults to the location it specifies as the source of software to install.
 
TWO_TASK
 
Should be undefined when installing the Oracle8 Server.
 
TMPDIR
 
A directory with at least 20 MB available space where the oracle  account has write permission. 
The default location on Linux is /usr/tmp.

 

SHMMAX Parameter System Memory Configuration

The SHMMAX parameter tells the amount of shared memory on a Linux-Intel system.
The following table shows what the value of SHMMAX should be for each amount of RAM.
RAM
SHMMAX
64
16
128 
32
256
64
512 
128
1024
256
2048
512
4096
512
 
Tasks to Perform as the root User

Not all tasks can be performed by the DBA.  Some require access to restricted files
which must be changes byt the system administrator.  In some cases, recompilation
of the Kernel is necessary.


	  Configure LINUX Kernel for Oracle

	  Create Mount Points

	  Create OS Groups for Database Administrators

	  Create OS Account to Own Oracle Software

	  Create a Local bin Directory

	  Create the oratab File
   
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