Changing an Oracle Database from TCP to RDS

If your Oracle Database runs on an Infiniband network, you can greatly benefit by switching from TCP to RDS for DB cluster communications

First enable RDS

svcadm enable svc:/system/rds:default

svcs svc:/system/rds:default
STATE          STIME    FMRI
online          4:40:52 svc:/system/rds:default

For ASM

On one node

crsctl stop cluster -all

On all nodes as root

perl rootcrs.pl -unlock -crshome /u01/app/11.2.0.3/grid

su - grid
make -f $ORACLE_HOME/rdbms/lib/ins_rdbms.mk ipc_rds ioracle

Back as root

perl rootcrs.pl -patch

If you need to rollback

make -f $ORACLE_HOME/rdbms/lib/ins_rdbms.mk ipc_g ioracle

For DB

On one node

crsctl stop cluster -all

On all nodes

su - oracle
cd /u01/app/oracle/product/11.2.0.3/dbhome_1/rdbms/lib/
make -f ins_rdbms.mk ipc_rds ioracle

As root

crsctl start cluster -all

To switch back

make -f ins_rdbms.mk ipc_g ioracle

Refrence

http://docs.oracle.com/cd/E11882_01/install.112/e22489/postinst.htm#CWLIN344

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