Hello
/usr/sap/UHR/SYS/exe/run/R3load: error while loading shared libraries: libclntsh.so.10.1: cannot open shared object file: No such file or directory
You have problems with the Oracle Instant Client.
su - uhradm
cdexe
ldd R3load
For details see log file(s) R3load.exe.log
Please provide the above log file
Also uhradm and orauhr users should be part of oper and dba groups.
I don't see that in what you have provided before.
Check the permissions of the environment variable files for uhradm and orauhr.
sapinst is started under the root under.
It helps others in helping you if you provide the complete information.
Regards
RB