Background process

[instance]

Hi
could you tell me the answer for the following question....
What process starts when an instance is started...?

a.Background process
b.user process
c.system process
d.server process
I am thinking the answer is Background process. Am i right..?
without user process is it posible to start background process....
pls give me idea of these process order, in which they starts.
Thanks and Regards.

[hrishy]

Hi

The naswer is a when a instance is started it allocates memory and starts some background processes .

Just curios why you are asking this question ?

regards
Hrishy

[gopu_cg]

Hi,
An Oracle instance runs two types of processes - Server and Background. Server processes are created to handle requests from sessions connected to the instance. Background processes, as the name says, are processes running behind the scene and are meant to perform certain maintenance activities or to deal with abnormal conditions arising in the lifetime of the instance.
The background processes are
DBWR,LGWR,ARCO(ARCHIVER),PMON,SMON,CKPT AND other processes

gopu