The suggested method to add an instance is via the dbca utility ( below is the silent version)
dbca -silent -addInstance -nodeList rac3 -gdbName ocfs -instanceName ocf3 -sysDBAUserName sysdba -sysDBAPassword xxxxx
If a dbca failed , try to add your new instance manually as follows
Add a new Listener using netca
Add a new Listener information in tnsnames.ora ( Remote Listener section)
Edit the tnsnames.ora for all instances
Prepare the database
Create a new thread
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ALTER DATABASE
ADD LOGFILE THREAD 3
GROUP 5 ('/ocfs-disk/ocfs/redo05.log') size 50M,
GROUP 6 ('/ocfs-disk/ocfs/redo06.log') size 50M;
alter database enable thread 3;
Create a new Undo tablespace
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create undo tablespace UNDOTBS3 datafile '/ocfs-disk/ocfs/undotbs03.dbf' size 100M autoextend off;
Create init<>.ora and password file from the new node and assign the new thread and undo tablespace
add the instance using srvctl
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srvctl add instance -d ocfs -i ocfs3 -n rac3
srvctl config database -d ocfs
srvctl start instance -d ocfs -i ocfs3
Ensure that the services_names is not set
ALTER SYSTEM SET service_names='' SCOPE=SPFILE SID='*';
