1. SAP R/3 Installation on WIN NT-ORACLE

2. SAP Installation Methods
Standard SAP Installation
Central System
Central Instance & Database Instance are in Same host.
Standalone Database System
Central Instance & Database Instance are in Different host.
MSCS SAP Installation
Known as Microsoft Cluster Server (MSCS) configuration.
The Central instance and Database are installed on two clustered machines and then configured.
To protect the system against failure.
The installation is performed in two stages. First is standard installation & second is Cluster configuration.

3. Standard SAP Installation
SAP system main components
Central Instance
Database Instance
Frontends
Configuration planning
Central system

4. Standard SAP Installation
Standalone Database System
The configuration plan must specify whether a central or standalone database system is to be installed and how many frontends and dialog instances are required.
After fixing the plan and also depending upon the availability of server, the Installation process can be started.

5. SAP System Installation
Process Flow
The SAP system installation can be divided into a number of phases:
Planning
Preparations
SAP System Installation
Post-Installation Activities

6. Process Flow In the Planning phase, you need to:
Check the hardware & software requirements.
Work out how the main system directories are to be distributed to RAID arrays in the system.
In the Preparation phase, you need perform following tasks:
Preparations related to the operating system:
Checking the Windows file system
Checking the Windows domain structure
Updating the Dynamic Link Libraries
Reserving virtual memory
Reducing the size of the Windows cache
Preparing the Active Directory (optional)
Other Preparations:
Choosing system and host names
Preparing the SAP System transport host
Granting user rights for the installation

7. Process Flow
In the Installation phase, you have to carry out following steps:
Central and database instance
Dialog instances
Frontends
Installation of the Central and database instance:
Central System
Standalone Database System
Central instance host
Database host

8. Installation of the R3SETUP tool using the file R3SETUP.BAT.
Process Flow
Central System: Actions on the central system host:
Installation of the Oracle server software and latest Patch using the Oracle Installer.
Installation of the R3SETUP tool using the file R3SETUP.BAT.
Installation of the central instance and database instance using the R3SETUP option Install Central and Database Instance.

9. Installation of the R3SETUP tool using the file R3SETUP.BAT.
Process Flow
Standalone Database System: Actions on the Central instance host:
Installation of the Oracle Client software and latest patch using the Oracle Installer.
Installation of the R3SETUP tool using the file R3SETUP.BAT.
Installation of the central instance using the R3SETUP option Install Central Instance.

10. Installation of the R3SETUP tool using the file R3SETUP.BAT.
Process Flow
Standalone Database System: Actions on the Database host:
Installation of the Oracle Server software and latest patch using the Oracle Installer.
Installation of the R3SETUP tool using the file R3SETUP.BAT.
Database creation and load using the R3SETUP option Install Database Instance.

11. Installation of the R3SETUP tool with the file R3SETUP.BAT.
Process Flow
Installation of the Dialog instances:
When the central and database instance have been installed, you can optionally install one or more dialog instances on further hosts in the system.
The actions necessary to set up a Dialog Instance:
Installation of the Oracle Client software and the latest patch using the Oracle Installer.
Installation of the R3SETUP tool with the file R3SETUP.BAT.
Installation of the dialog instance with the R3SETUP option Install Dialog Instance.

12. Process Flow
In the Post-installation activities phase, you have to perform:
Starting and stopping the system
Logging on to the system
Installing the SAP License
Checking the services
Setting up the Transport Management System
Kernel Upgrade
Apply Support packages
Add-on Installation(if required)
Configuring the SAProuter and SAPNet - R/3 Frontend
Performing a full backup

13. Hardware and Software Requirements Check
Checking Requirements for a Central System:
Hardware Requirement
CD drive locally connected to host