They are oracle background processes. The I#### processes are
DBWR_IO_SLAVES (check your init.ora) and P#### are your parallel query
slaves (set by PARALLEL_MIN_SERVERS in init.ora). I had the same
confusion once about what those processes were.
Watson Davis wrote:
> On Wed, 12 Mar 2003 09:32:35 -0600, Ed Stevens <nospam_at_noway.nohow>
> wrote:
>
>
>>Platform - Oracle 8.0.6 SE on NT4
>>
>>When I perform this Query:
>>
>>select spid,
>> to_char(logon_time,'dd-mon-yy hh24:mi:ss') Started,
>> s.status,
>> s.osuser,
>> p.username,
>> substr(p.program,1,45) pgm
>
>>from v$process p,
>
>> v$session s
>> where p.addr=s.paddr
>>order by logon_time;
>>
>>I get some results I can't explain. The first chunk of sessions is
>>easy, the basic background processes:
>>
>>STATUS OSUSER USERNAME PGM
>>-------- -------- -------- -------------
>>ACTIVE UNKNOWN UNKNOWN ORACLE80.EXE
>>ACTIVE UNKNOWN UNKNOWN ORACLE80.EXE
>>ACTIVE UNKNOWN UNKNOWN ORACLE80.EXE
>>ACTIVE UNKNOWN UNKNOWN ORACLE80.EXE
>>ACTIVE UNKNOWN UNKNOWN ORACLE80.EXE
>>ACTIVE UNKNOWN UNKNOWN ORACLE80.EXE
>>
>>But what is this? (I've cut off the time and spid for brevity, but
>>these started two days after database startup. I hope it doesn't line
>>wrap . . )
>>
>>STATUS OSUSER USERNAME PGM
>>-------- -------- -------- -------------
>>ACTIVE UNKNOWN ORACLE80.EXE (I101)
>>ACTIVE UNKNOWN ORACLE80.EXE (I102)
>>ACTIVE UNKNOWN ORACLE80.EXE (I103)
>>ACTIVE UNKNOWN ORACLE80.EXE (I106)
>>ACTIVE UNKNOWN ORACLE80.EXE (I104)
>>ACTIVE UNKNOWN ORACLE80.EXE (I105)
>>
>>Then this bunch, that have start times of today, two days later than
>>the last bunch.
>>
>>STATUS OSUSER USERNAME PGM
>>-------- -------- -------- -------------
>>ACTIVE ATUSER UNKNOWN ORACLE80.EXE (P001)
>>ACTIVE ATUSER UNKNOWN ORACLE80.EXE (P002)
>>ACTIVE ATUSER UNKNOWN ORACLE80.EXE (P003)
>>ACTIVE ATUSER UNKNOWN ORACLE80.EXE (P004)
>>ACTIVE ATUSER UNKNOWN ORACLE80.EXE (P005)
>>ACTIVE ATUSER UNKNOWN ORACLE80.EXE (P006)
>>ACTIVE ATUSER UNKNOWN ORACLE80.EXE (P007)
>>
>>What I find puzzling about this is that all of these are executing
>>ORACLE80.EXE. I expect that for the background processes, but wht of
>>these others, with the qualifier in parentheses? Especially that
>>middle group, with no OSUSER value.
>>
>>BTW, there are some other, obvious and easy to understand user
>>connections, running pgms like SQLPLUS, TOAD, a user app, etc.
>
>
> I'm in Solaris Oracle 7.3.4 and I have 5 background processes that
> show up with no username* in the v$session table: PMON, DBWR, LGWR,
> SMON, and RECO. You're probably looking at something similar.
>
> *The osuser shows up as oracle, btw.
>
> Watson (the pencil neck) Davis
Received on Wed Mar 12 2003 - 14:48:49 CST
