UNIX_GROUP_NAME(UnixInstallGroup) Silent install cannot continue.

Siebel Installtion :
----------------------
UNIX_GROUP_NAME(UnixInstallGroup)
Silent install cannot continue.

This problem is occurred due to incorrect running of  runInstaller.

-jreLoc is path to the simple path to Jre location in java folder

-invPtrLoc is the file path and need to give file name also in the command as /u01/app/oraInventory/oraInst.loc  then it works

if you give simple path as /u01/app/oraInventory then it will give error as UNIX_GROUP_NAME(UnixInstallGroup)
Silent install cannot continue.

Please run this command to run successfully.

./runInstaller -jreLoc /usr/java6_64/jre -invPtrLoc /u01/app/oraInventory/oraInst.loc