Jury.
In first thanks for information.
Then: in my database, and i saw this problem not only now, every time when
listener updated services in v$sysstat "cummlulative connections" increased too.
I didn't check JOB_QUEUE parameters and i can't say about it nothing.
May be this is "next source" for cummlulative connections.
But in this case oracle has "new" knowlege about mathimatics.

[Edited by Shestakov on 04-17-2002 at 05:22 PM]