java - Out of memory with still memory -

i'm getting outofmemory java heap in application. after check gc.logs can see i'm having minor gc after time can see more , more fullgc´s in log.

then when goes down , gives me out of memory, can see in dump created , in gc.log total heap xmx memory not consumed.

as read java save % of memory heap old generation section, , once % it's exceeded throw out of memory. explain why i'm having out of memory still memory.