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PID and PPID - please explain :(-

 
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# 1  
Old 11-28-2011
Power PID and PPID - please explain :(-
Hi,

I need some help understanding PID and PPID that is shown by the ps -ef output. OS is Solaris 5.8. Smilie

There are several Oracle databases and processes running on this server and they all have the same PPID. Does that mean they are all spawned off the same startup script?

I then start the Oracle monitoring agent - OEM and doing a ps -ef, it generates a unique PID but with the same PPID as the other oracle processes that are already running. How is this so?

Any explanation or feedback much appreciated. Best if there is any link out there that gives a very good explanation.

Thanks in advance.
# 2  
Old 11-29-2011
PPID is the parent process ID (i.e. the one which spawned it).

Oracle processes will usually have a PPID of 1 (init).
 
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