Friday, August 10, 2012

Oracle On Windows vs Linux

Today i will talk about Compare Oracle Installation On Windows vs Linux , and just to let you know oracle recommended Linux .

1-Installation Oracle on Windows / Linux

For installation of Oracle on windows doesn't require any other user creation, we can perform oracle installation using "administrator" superuser of windows. For installation of Oracle on Unix/linux required to creating separate operating system user account. Using super user "root" we doesn't require to perform Oracle installation.

For installation of Oracle on windows, if we create separate operating system then it should be group of super user administrator. For installation of Oracle on Unix/Linux, when we create operating system user then it should be not part of super user group.

2-Default Location Of Windows , Linux :

Default location of password file and parameter file for Windows is ORACLE_HOME\database folder.Default location of password file and parameter file for Unix/Linux is ORACLE_HOME/dbs folder.

ORACLE_BASE,ORACLE_HOME,ORACLE_SID are defined in registry of Windows as HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOME0. ORACLE_BASE,ORACLE_HOME,ORACLE_SID are defined as user's environment variables in Unix/Linux.

3-Symbolic Links windows , Linux

Symbolic links are NOT supported for user's environment variables or registry parameter in Windows. Symbolic links are supported for user's environment variables in Unix/Linux.

4-Enviorment variable in Windows, Linux 

In windows we should need to set environment variable using "set" command and it doesn't save in user profile. In Unix and Linux we should need to set environment variable using "export" command and it can save using .profile (in Unix) and .bash_profile (in Linux).

5-Shared Library DLL windows , Linux 

Oracle's shared libraries are called as shared DLL in windows. Oracle's shared libraries are available in Unix/Linux.

6-Relinking On Windows , Linux

Relinking of Oracle executable is not available in Windows. Relinking of Oracle executable is available in Unix/Linux.

7-Shared memory Segment Windows, Linux

Shared memory , shared segments and semaphores are NOT adjustable in Windows. Shared memory segment(SHMMAX), shared segments (SHMMNI) and semaphores (SEMMNS) are adjustable using kernel parameters in Unix/Linux.

8-Memory and processes In Windows , Linux

Oracle's SGA locking in real memory doesn't possible in Windows. Oracle's SGA locking in real memory is possible in Unix/Linux.

Each background process of Oracle is implementing as Thread inside single process in Windows. Each background process of Oracle is a process in Unix/Linux.

9-GUI , CLUI Windows , Linux 

Windows called as GUI because it provides Graphical User Interface. Unix and Linux called as CLUI called Command Line User Interface. Due to this reason Unix and Linux provides more performance than Windows due to resource utilization.

10-File System , Security Windows , Linux

Windows is flat file system. Unix and Linux is hierarchical model file system. Windows kernel stores in couple of files like Registry. Unix and Linux kernel stores in many files which are hierarchy. It is very easy to understand Unix and Linux file systems in any version.

Earlier FAT and FAT32 file system has no security in Windows. Using NTFS file system windows use file permission based security. In Unix and Linux has traditional file permission security with owner,group and other users.Unix has greater built-in security and permissions features than Windows. Linux contains also same type of security and permissions logic like Unix.

11-Mointer Oracle In Windows, Linux

There are very few utilities available in Windows for performance monitoring and administration. There are lot of command line utilities are available in Unix/Linux for performance monitoring and administration.

12-Source Code Windows , Linux 

Source code of Operating system doesn't available in Windows. Source code of Operating system is available in some of Linux flavors, means we can modify source code of operating system.

13-Skills Windows , Linux 

Oracle on Windows magnetize because easy to understand, easy to maintain, easy to develop, resource availability and with good support. Oracle on Unix/Linux is not easy to understand,easy to maintain or easy to develop because it requires high skill set and depth knowledge.

Oracle deployment is very easy in Windows because not need to more knowledge or special skill sets. Oracle deployment is not easy in Unix/Linux because it requires special skill sets.

Windows is user friendly operating system. Unix and Linux doesn't user friendly operating system.

14-Virus Windows , Linux 

There is high risk of virus attacks on Windows. Because majority of windows users run as Administrator and virus can be affecting on any of files of kernel due to super user account. There is minimum risk for virus attacks on Unix and Linux. Because most of Unix box or Linux box is being run by user interface not using "root" super user. Due to this reason virus attacker cannot able to modify kernel of operating system. 

Thank you
Osama Mustafa


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