<p>Hi,all expert of the postgresql.<p>I want to learn the kernel of postgresql. When I debug it with gdb, I come to a
problemthat I can't solve. In the BackendStartup() it forks a new child process. I can't trace into the new child
processwith attach. It say that Operation is not permitted.<p>I really need your help.<p>Thank you very
much.<p>JinqiangHan