ORA-07445: exception encountered: core dump [nttaddr2bnd()+2158] [SIGSEGV] [ADDR:0x0] [PC:0x43CA976] [Address not mapped to object] []

ORA-07445: exception encountered: core dump [nttaddr2bnd()+2158] [SIGSEGV] [ADDR:0x0] [PC:0x43CA976] [Address not mapped to object] []

Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x0] [PC:0x43CA976, nttaddr2bnd()+2158] [flags: 0x0, count: 1]

Check for your /etc/hosts file and be sure that the hostname of your server appears with the correct ip of the server.