Ubuntu下解决 jmap等jdk工具attach pid错误

http://blog.csdn.net/yhmhappy2006/article/details/7300019

1.错误案例

1. nathan@ubuntu:~/Downloads$jmap-heap3991
2. AttachingtoprocessID3991,pleasewait...
3. Errorattachingtoprocess:sun.jvm.hotspot.debugger.DebuggerException:Can'tattachtotheprocess

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



4.参考http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7050524

http://www.ryanchapin.com/fv-b-4-792/Error-attaching-to-process--sun-jvm-hotspot-debugger-DebuggerException--Can-t-attach-to-the-process--SOLVED-.html

http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7050524