After the untar as per the below instruction from RSA IMG up-gradation guide:
Uncompress and untar the file. Run the following commands:
a. cd /home/oracle
b. tar zvxf Aveksa_<VersionNumber>_P<PatchNumber>.tar.gz // it doesnt work either; used "tar -jxvf " to untar the file.
Log in as root and run the patch.sh installation script in the directory created in Step 4. Run
the following commands:
a. cd /home/oracle/Aveksa_<VersionNumber>_P<PatchNumber>
b. sh patch.sh - unable to locate this as we do not have the above mentioned directory under home/oracle.
tar file has been downloaded from the below link.