"Failure at scls_scr_create with code 1" after run rootconfig command

I changed hostnames on RAC (solaris), But my hostnames is upper charactors.

# ./rootconfig
Checking to see if Oracle CRS stack is already configured

Setting the permissions on OCR backup directory
Setting up NS directories
Oracle Cluster Registry configuration upgraded successfully
WARNING: directory '/oracle/product' is not owned by root
WARNING: directory '/oracle' is not owned by root
Failure at scls_scr_create with code 1
Internal Error Information:
Category: 1234
Operation: scls_scr_create
Location: mkdir
Other: Unable to make user dir
Dep: 2
Failure initializing entries in /var/opt/oracle/scls_scr/HOSTNAME01.


So, I found out some information on metalink.

Cause :
This issue is caused by the host name problem as explained in Bug 4632899

Bug 4632899 -- CSS NOT STARTING UP IF HOSTNAME HAS CAPITAL LETTERS-
SOLARIS

Rediscovery Information:
On Solaris, when the hostname is in
Capital, the following
errors might be noticed when using crs scripts.

Solution :
This basically happens because awk does not have the tolower() function in
the Sun Solaris. The call to tolower() on Solaris 9 and Solaris 10 returns the
unchanged uppercase hostname.

The followings options are available to
resolve this:

1.
Change the host name to lower case.

OR

2. "nawk" has the tolower()
function. Setup a symbolic link to "nawk"

ln -s /usr/bin/nawk
/usr/bin/awk

this case, I used choice II:

mv /usr/bin/awk /usr/bin/awk-org

ln -s /usr/bin/nawk /usr/bin/awk

and then run rootconfig again. It's OK.