ICS On-Premise Monitor – Agent Ping by Greg Mally

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The Integration Cloud Service (ICS) Connectivity Agent is a feature of ICS that helps with the cloud to ground (on-premise) use case that is common to companies who are moving into cloud technologies. The agent provides an ICS subscriber the ability to create ICS integrations that interact with on-premise resources like legacy applications, databases, etc. without compromising the on-premise resource. In an attempt to make the agent as simple and secure as possible, it is located behind the firewall where the on-premise resource is located and communicates to the Oracle Public Cloud (OPC) via HTTP only. This allows the agent to use existing firewall configurations without added requirements on the “typical” organization network. However, some networks are more secure, complex, and/or stable than others and therefore are less “typical”. When these types of networks are encountered, it prevents the Connectivity Agent from successfully communicating from ground to cloud (or ICS communicating from cloud to ground). This blog focuses on a scenario where the network that the agent is installed on is flaky/unstable.

Although the Connectivity Agent has gone through a fair amount of maturity due to exposure to a wide range of network environments, there are those edge-case networks that can introduce communication challenges from ground to cloud. Sometimes these environments impact communication such that the agent thinks everything is working fine when in fact messaging has broken down between the on-premise network and OPC. What do you do when you know the agent is not receiving messages and the various ICS/agent logs do not indicate any problem? To make the scenario more complex, the communication breakdown does not follow any type of pattern (i.e., it is random). The key to finding the root cause is to narrow the window where the problem surfaces. Once the window is narrowed down, things like tcpdumps and/or tools like Wireshark can be leveraged. Read the complete article here.

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Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress

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About Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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