jdk内存溢出监控
JAVA_OPT="$JAVA_OPT-XX:+HeapDumpOnOutOfMemoryError"
JAVA_OPT="$JAVA_OPT-XX:HeapDumpPath=/home/admin/heapdump"


手动
jmap -dump:live,format=b,file=/home/admin/dump.bin 1534