Multiple Sessions in Oracle

I have a unique problem: I created an app in Delphi that is essentially a tracking program. It tracks certain items and the age. It also updates/inserts into the database. Now, when I log in to Oracle from within the Delphi app, everything is fine (I log in to Oracle as system and monitor V$Session); only one session is created. If I run this particular query from within the Delphi app, it creates 7 sessions in oracle. I've run the query in SQL Plus and only one session appears. Run within Delphi app, 7 sessions appear. We are running multi-threaded server and parallel server options o an Oracle 7.3.4 server (NT 4.0). I've created other Delphi apps that do not create this phenomenon. Here are some particlars:
- Query runs on a view of several tables (eqi-joined)
- View contains 2 longs
- Simple query only selects the fields
- App contains 2 query controls, one store procedure control, one database control, one table control and 3 datasources. I don't do multiple logins in a loop. I have noticed 7 sessions during logon and combo box population (via loop on table control). After it's finished, the other 6 sessions disappear. Another DBA and I watched as he killed every session, and nothing happened until he killed the true active session for the program. In fact here is the output from within SQL Plus:
USERNAME                       STATUS         SID   SERIAL# PROGRAM
------------------------------ -------- --------- --------- -------
EVANSJ                         INACTIVE        23       841 OraPgm
EVANSJ                         INACTIVE        30       412 OraPgm
EVANSJ                         INACTIVE        40       398 OraPgm
EVANSJ                         INACTIVE        51       267 OraPgm
EVANSJ                         INACTIVE        60       190 OraPgm
EVANSJ                         INACTIVE        66        56 OraPgm
EVANSJ                         INACTIVE        67        97 OraPgm

If anyone has encountered this problem and has solved it, or might know what's going on, there are 200 points for you.
evansjAsked:
Who is Participating?
 
kretzschmarCommented:
hi again,

i guess that depends on the bde sql-passthrough settings of your alias-driver.

check following entries:

set sqlpasstroughmode to shared noautocommit
set sqlmode to server

just a guess

meikl
0
 
kretzschmarCommented:
listening . . . (too late now here)
0
 
kretzschmarCommented:
hi evansj,

i guess that my guess was right, isn't it?

thanks for accepting my comment as an answer :-)
glad to helped you
good luck again

meikl
0
Cloud Class® Course: Microsoft Azure 2017

Azure has a changed a lot since it was originally introduce by adding new services and features. Do you know everything you need to about Azure? This course will teach you about the Azure App Service, monitoring and application insights, DevOps, and Team Services.

 
evansjAuthor Commented:
To Meikl: It worked this morning, now its doing almost the same thing with 7 connects 6 inactive one active.
0
 
kretzschmarCommented:
hi evans,
that are bad news :-(
what was different?

will do a test on next monday,
maybe i can reproduce this

meikl
0
 
evansjAuthor Commented:
I tried down revving the BDE, then I uprevved back to 5.11. The phenomenon occurs more often than not, and sometimes only produces one instance.
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.