Oracle RAC Installation Step 4 - Perform Oracle Database 10g software installation

$ /cdrom/database/runInstaller

Welcome Screen Appears --> Next

Select Installation Type
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Check - Enterprise Edition (1.24 GB)

Specify Home Details
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Name - OracleDb10g_home1
Path - /u01/app/oracle/product/10.2.0/db_1

Specify Cluster Installation
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Check - Cluster Installation
Select nodes (in addition to the local node) in the hardware cluster where the installer should install products that you select in this installation.

Product-Specific Prerequisite Checks
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zero requirements to be verified.
you must manually verify and confirm the items that are flagged with warnings and items that require manual checks.

Select Configuration Option
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check - Install database Software only

Start Install and finally run root.sh script
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/u01/app/oracle/product/10.2.0/db_1/root.sh on all nodes eg. node1,node2