I've received my balance to my addresss that starts with 3 which is after 'addwitnessaddress' command.
I'd like to know that how do I properly backup my balance to keep safety.
Bitcoin Core has a function that called backup wallet to the 'wallet.dat', but there is a in unexpectable case by file corruption.
I tried keep it save by using 'dumpprivkey ' to get my priv key.
But the console says, "Address does not refer to a key". So I googled it and found it has related with something called P2SH.
It's little bit hard to understand for me to use Bitcoin.
Can some help me out to backup my balance only using by Bitcoin Core client instead of 'wallet.dat'?