In this post I am going discuss about steps involved in Adding a node to Shared Application Tier File System.
Step 1: Run rapid clone on the existing node
$ cd $INST_TOP/admin/scripts
$ perl adpreclone.pl appsTier
Step 2: Mount the shared filesystem that you are going to add and the following Shared Top's must be visible from all application nodes involved in configuration.
Tools ORACLE_HOME: /u01/share/apps/tech_st/ramora/10.1.2
Web ORACLE_HOME: /u01/share/apps/tech_st/ramora/10.1.3
Step 3: Copy the context file from existing node to new node which is now going to participate in Shared Application Tier file system if the file is not accessible from new node. Source the application environment file and execute the following commands:
$ cd $COMMON_TOP/clone/bin
$ Perl adclonectx.pl addnode contextfile=PATH TO xml file under inst top orar12.xml
The new context file will be generated for the new node. Run the AutoConfig utlity to generate Instance Home for this node and update the required tables in the database.
$ perl $AD_TOP/bin/adconfig.pl contextfile= PATH TO context file name with context file name
Now run the AutoConfig all other applicaton nodes to update required configuration files on those nodes with new node addition information.
It is possible to configure Read-Only Shared Application Tier File system.