1.错误案例
java] view plaincopy
- nathan@ubuntu:~/Downloads$ jmap -heap 3991
- Attaching to process ID 3991, please wait...
- Error attaching to process: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the process
2.解决方案
1)修改/etc/sysctl.d/10-ptrace.conf文件如下:
< kernel.yama.ptrace_scope = 1 --- > kernel.yama.ptrace_scope = 0
(即将1改成0)
2)重启
3.成功