db2start fails with error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory

Installed db2 10.5 but installation completes with warning that db2start failed *while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory*. i have both libstdc++.so.5 and libstdc++.so.6 in my /usr/lib/ [root@lnxcm8 adm]# ll /usr/lib | grep libstdc++.so. lrwxrwxrwx 1 root root 18 Jun 25 16:56 libstdc++.so.5 -> libstdc++.so.5.0.7 -rwxr-xr-x 1 root root 824172 Jul 2 2015 libstdc++.so.5.0.7 lrwxrwxrwx 1 root root 19 Jun 26 16:23 libstdc++.so.6 -> libstdc++.so.6.0.19 -rwxr-xr-x 1 root root 1075592 Aug 31 2016 libstdc++.so.6.0.19 Also while installation dn2prereq stated that i need *libstdc++.so.6* so i installed it, and now when it complete its installation it fails with error failed to load libstdc++.so.5.