OBIEE 11.1.1 - In case of Firewalls, OBIEE Scheduler may fails to Restart via OPMN or during BI configuration
By Ahmed Awan-Oracle on Jul 15, 2014
If you have Firewall between OBIEE Server and Oracle Database machine, the OBIEE Scheduler component may fails to restart via OPMN or during BI configuration.
The firewall is setup with 'Urgent Flag'. As per firewall documentation, the Urgent Flag cannot be disabled. It is a global setting and would affect all traffic going in and out in organization. So the issue can be resolved by setting DISABLE_OOB=ON in the SQLNET.ora for BI Scheduler.
The firewall is clearing this Urgent Bit in the communication, the message is not transferred from the Scheduler (DB Client) to the Oracle database so by setting DISABLE_OOB=ON the Urgent flag is not sent from Scheduler and the connection works normally.
How-to: On BIServer side only, set DISABLE_OOB=ON in SQLNET.ora file > …/Oracle_BI1/network/admin