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1. What is Maintenance Wizard used for ?

Maintenance Wizard is an Oracle tool (for UNIX or Linux) which can be used for upgrading Oracle APPS to R12. It helps you to reduce upgrade tasks by dynamically filtering the necessary steps based on criteria it obtains from your Applications environment

2. Presentation of my test environment

• The Maintenance Wizard will be installed on the host named MW  (IP address: 192.168.1.203)

• The Oracle Applications 11i is installed on 2 nodes: The Apps tier is installed on the host named APPS (IP address: 192.168.1.202) and the Database tier is installed on the host named DB  (IP address: 192.168.1.201).

3. Prepare the installation 

• the /etc/hosts  (on the 3 hosts) must contains the aliases for all 3 hosts

• rsh must be enabled on the APPS and DB hosts (ssh also could be enabled) and must allow the owner of the Maintenance Wizard (mw Linux account) to connect to the APPS and DB hosts without prompting for the password. More more details click here.  

• Download from Metalink the Maintenance Wizard version 2.x, Oracle RDBMS 10.2.0 and iAS 10.1.3

• Create the following directories: /ORACLE10g (for the Oracle Home) and /ORA_iAS1013 (for the IAS Oracle Home): We must have 2 separate Oracle Homes for this. Do not try to use an existing Oracle Home !

4. Install the Oracle 10g database Software

    a) Prepare the OS for the Oracle database 10g installation (however, this step is needed for the database and not for the Oracle  software). For more installation see the Oracle 10g Installation Guide.

    b) Run the installer

        ./runInstaller

    c) On the first window, choose the ORACLE_HOME location, uncheck the option called "Create Starter database", choose "Enterprise Edition". 

    d) Specify a location for the Oracle Inventory

    e) When the pre-requisites will be checked and all is ok, click "Next"

    f) When the "Summary" window appears click "Install"

    g) Exit the installation when the installation will complete.    

5. Install the Oracle 10g iAS for use by Maintenance Wizard

    a) Run the installer

        ./runInstaller

    Note: If you use a version of Linux which is not validated by the iAS installer you can start the installer with the ignoreSysPrereqs parameter (in this case you must be sure that the other prerequisites are valid ): 

       ./runInstaller -ignoreSysPrereqs   

    b) Specify the installation directory (iAS Oracle Home), choose "Advanced Installation Mode" and click "Next"

    c) Choose "Web Server" option (which contains the Oracle Process Management) and click "Next"

    d) Select desired method of port configuration (I suggest "Automatic" method)  and click "Next"

    e) Choose a name for your instance (example: ias_mw ) and click "Next"

    f) Click Next again and after that in the next window press "Install"

    g) When the installation complete, exit the installer. 

More information about  this subject ( Install the Maintenance Wizard ) you can get from  www.in-oracle.com