Siebel Admin

he session can be killed at the Database layer, however the Siebel object manager's DB Connector will automatically perform a session reconnect :
Here is the session from Oracle's v$session table :

generate a more detailed log file to assist in troubleshooting any Siebel Object Manager (OM) related behaviors. Increasing the event logging will provide information about the individual processes and steps that are part of that task.

During configuration and upgrades of a Siebel application, it happens quite often that setting

clearing Siebel workflow instance monitoring log :
TRUNCATE TABLE S_WFA_INST_LOG;
TRUNCATE TABLE S_WFA_INSTP_LOG;
TRUNCATE TABLE S_WFA_STPRP_LOG

clearing Siebel workflow instance monitoring log :
TRUNCATE TABLE S_WFA_INST_LOG;
TRUNCATE TABLE S_WFA_INSTP_LOG;
TRUNCATE TABLE S_WFA_STPRP_LOG