Build oracle with RAC off/on

If the Oracle binaries are installed with the RAC, one can’t use those binaries to start Oracle Instance if CRS is not running, so in case when one needs to start the instance without CRS one needs to rebuild the oracle and it’s libraries to start the instance.

To turn off RAC

# link the oracle libraries

$ cd $ORACLE_HOME/rdbms/lib

$ make -f ins_rdbms.mk rac_off

# rebuild oracle

$ cd $ORACLE_HOME/bin

$ relink oracle

To turn on RAC

# link the oracle libraries

$ cd $ORACLE_HOME/rdbms/lib

$ make -f ins_rdbms.mk rac_on

# rebuild oracle

$ cd $ORACLE_HOME/bin

$ relink oracle

Incase above set of commands do not work following can be used :

To turn on RAC
$ cd $ORACLE_HOME/rdbms/lib
$ make -f ins_rdbms.mk rac_on ioracle