One Unix process and multiple Oracle sessions

Question

Hi All,
When I checked one particular Unix process, I have seen that in the database there are 3 different Oracle sessions spanning days between them. Can you please tell me how this is possible.
Regards
Satish

Answer 1

Hi Yas,
The query I ran is tghe following.
SELECT Substr(a.username,1,15) "Username",
a.osuser "OS User",
a.sid "Session ID",
a.serial# "Serial No",
d.spid "Process ID",
a.lockwait "LockWait",
a.status "Status",
Trunc(b.value/1024) "PGA (Kb)",
Trunc(e.value/1024) "UGA (Kb)",
a.module "Module",
Substr(a.machine,1,15) "Machine",
a.program "Program",
Substr(To_Char(a.logon_Time,'DD-Mon-YYYY HH24:MI:SS'),1,20) "Time"
FROM v$session a,
v$sesstat b,
v$statname c,
v$process d,
v$sesstat e,
v$statname f
WHERE d.spid=29789 and
a.paddr = d.addr
AND a.sid = b.sid
AND b.statistic# = c.statistic#
AND c.name = 'session pga memory'
AND a.sid = e.sid
AND e.statistic# = f.statistic#
AND f.name = 'session uga memory'
ORDER BY 1,2;
I passed spid to it.
Regards
Satish