EM 13c: Enterprise Manager 13c Cloud Control OMS Leaves Open Sessions with Target Databases (Doc ID 2831213.1)

Last updated on JANUARY 06, 2022

Applies to:

Symptoms

Enterprise Manager (EM) 13.4 Cloud Control is making multiple sys or system connections to a monitored database and leaves them as inactive.  ORA-20 can happen for new connections.  

From V$session, hundreds of sessions like this show as open on the target database:

select username, machine, program, module, status
from v$session
where program='OMS'

USERNAME        MACHINE              PROGRAM    MODULE     STATUS
-----------        -------------------     ------------  --------       ---------
SYSTEM         <OMS_MACHINE>       OMS        OEM           INACTIVE
SYSTEM         <OMS_MACHINE>       OMS        OEM           INACTIVE
SYSTEM         <OMS_MACHINE>       OMS        OEM           INACTIVE
...
...
SYSTEM         <OMS_MACHINE>       OMS       OEM            INACTIVE

Changes

Cause

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.