In my case, i solved with below OIDs.
OIDs for CPU & Memory
ALL CPUCurrent CPUFree Memory
1.3.6.1.4.1.9.9.618.1.4.1.01.3.6.1.4.1.14179.1.1.5.1.01.3.6.1.4.1.14179.1.1.5.3.0

You should divide the “Free System Memory : 482672640” / 1024 bytes to get 471360 MB to be closed the result of SNMP


ON CISCO WEB SITE, THE OID NUMBER IS 1.3.6.1.4.1.14179.1.1.5.3.
IF YOU DO NOT INSERT 0 TO END OF THE OID, YOU WILL GET “NO SUCH INSTANCE” MESSAGE.