High Virtual Circuit Wait Running SQL Through a Juniper Firewall (Doc ID 1293202.1)

Last updated on AUGUST 30, 2016

Applies to:

Oracle Net Services - Version 9.2.0.1 to 11.2.0.2 [Release 9.2 to 11.2]
Oracle Database - Enterprise Edition - Version 11.2.0.3 to 11.2.0.3 [Release 11.2]
Information in this document applies to any platform.

Symptoms


From DBControl, High 'virtual circuit wait' is seen on a 'SELECT' SQL.


From ASH Report in 65 minutes elapsed time:

Top User Events


Event                "Event Class"      % Event "Avg Active Sessions"
virtual circuit wait  Network           98.32    7.99


The database is experiencing low performance.

Changes

Firewall policy was implemented for security purposes.

Firewall Device: Juniper Firewall  SSG-520 with Firmware Version 6.2.0 R4.0 .

Cause

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