Unable to kill sleeping process

Hi,

I'm trying to delete a sleeping process (parent ID is not 1) with "kill -9" command by the owner of the process (infodba) but it doesn't get killed. Is there any way of killing this process without killing the parent process or rebooting? (I'm using HP Unix B.11.11)

$ ps -eflx | grep program1 | grep -v grep
  1 S  infodba 10652  5774  0 154 20         4e4ced00 1472         4f976dc8  Oct 28  pts/tc    0:02 program1

p.s. I tried "kill -9" with root user but the result was the same.