Invalid DataSource Connections in Connection Pool due to Firewall - Timeout or Failover
Last updated on DECEMBER 04, 2017
Applies to:Oracle Containers for J2EE - Version 10.1.2.0.0 to 10.1.3.5.0 [Release AS10gR2 to AS10gR3]
Information in this document applies to any platform.
***Checked for relevance on 28-Mar-2014***
- Oracle AS 10.1.3 connecting to Database 10.2.0.2 with 2 firewalls (firewall high availability) in between them
- 3 AS servers --> 2 HA firewall -> Fail safe DB (2 - on windows 2003 cluster)
- During resilient test of firewall (firewall failover) the connection pool becomes invalid
- Application is using Sticky Session
- So on firewall failover end users loose their sessions
- For performance reasons applications (BPEL) need to maintain about 25 minimum connections in OC4J managed connection pool.
When application is not used for a while (for example not used overnight), the physical connection to Database through firewall is terminated by firewall timeout settings and the pooled connections becomes invalid.
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