Improving Performance via Parallelism in Oracle Event Processing Pipelines with High-Availability by Mauricio Arango

February 25, 2014 Leave a comment

This posting explains how to use parallelism to improve performance of Oracle Event Processing (OEP) applications with active-active high-availability (HA) deployments. Parallelism is exploited for performance gain in each one of the server instances of an HA configuration. This is achieved by identifying sections of an application’s processing pipeline that can operate in parallel, and, therefore, can be mapped to separate processing threads. Both pipeline and independent query parallelism are described.

Pipeline Parallelism

A pipeline architecture has inherent concurrency because each of its stages works in parallel on different data elements flowing through it. For example, in the pipeline in figure 1, if each stage is assigned its own processing thread, the following actions can occur in concurrently: input JMS adapter reads event #3 from a JMS topic, CQL query processor handles event #2, and output JMS adapter writes event #1 to a queue.

Figure 1. OEP Pipeline with three concurrent stages

figure1

Although OEP HA pipelines are limited to one thread per stage, significant performance gains can be achieved by running each stage in a separate thread as compared to running all stages on one thread or in a number of threads smaller than the number of pipeline stages.

A key constraint in OEP when using active-active HA (see Oracle Fusion Middleware Developer’s Guide for Oracle Event Processing 11g Release 1 (11.1.1.7) for Eclipse, section 24) is that it requires the input streams to both the primary and the secondary instances to be identical and to maintain the same event ordering as events flow through the OEP Event Processing Network (EPN). This constrain limits the EPN topology to be either a linear pipeline, starting from an input adapter and ending with an output adapter, or a tree where, each node with downstream branching replicates every event to each of its branches.

The event ordering requirement also limits to one the number of threads assigned to each stage of the EPN. Having more than one thread in one stage, for example, in an input JMS adapter, would fail to assure that the order of events entering the following stage, such as input channel, is the same in both the primary and secondary instances. Read the complete article here.

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Monitoring large flow traces with Oracle SOA Suite by Martin Günther

February 24, 2014 Leave a comment

End-to-end monitoring of BPEL process instances acro ss composite borders is a great feature of Oracle SOA/Business Process Management Suite 11g. It is shown in nearly every PreSales presentation and when you were used to know SOA Suite 10g or to work with other kinds of distributed, heterogenous systems it is a real improvement.

But when you implement large process chains you might realize that the newly won process transparency can raise new challenges. Imagine you have a root process which creates several instances of sub-processes. In such a case without doing any extra work you will get one flow trace for the process and all of its sub-process instances. For large process chains you need to consider the following facts:

  • Transparency: Although it shows an end-to-end view of the whole execution tree, trying to find a faulted sub-process might be a real challenge. It doesn’t matter if you start the search from the root process instance or from one of the sub-processes – the flow trace always displays all components of the execution context. When you click on a sub-process and you go back to the flow trace you might have to expand all child nodes again and again.
  • DataSetTooLargeException:  When your flow trace becomes longer and longer, you will observe, that there is a maximum size for the audit trail that can be displayed by Enterprise Manager. Usually it results in a java.lang.RuntimeException: oracle.soa.management.facade.DataSetTooLargeException: Requested audit trail size is larger than threshold … chars
    For large execution trees, sub-process instances might not be displayed or you might not be able to see things in detail.
  • Low Memory: It is not only the visible representation of your instance, which struggles. A huge audit trail implicitly means that your needed memory allocation for executing your process instance grows. It can grow to this extent that your process instance crashes because of running low in memory.

Read the complete article here.

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Scripted SOA Diagnostic Dumps for PS6 (11.1.1.7) By Shawn Bailey

February 23, 2014 Leave a comment

When you upgrade to SOA Suite PS6 (11.1.1.7) you acquire a new set of Diagnostic Dumps in addition to what was available in PS5. With more than a dozen to choose from and not wanting to run them one at a time, this blog post provides a sample script to collect them all quickly and hopefully easily. There are several ways that this collection could be scripted and this is just one example.
What is Included:

  • wlst.properties: Ant Properties
  • build.xml
  • soa_diagnostic_script.py: Python Script

Read the complete article here.

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9 Tips for Organizational Maturity in SOA by Luis Weir

February 20, 2014 1 Comment

One of the greatest challenges to implementing SOA has in fact nothing to do with the intrinsic complexity behind a SOA technology platform. It is widely recognized that the real difficulty lies in dealing with people and processes from different parts of business and aligning them to deliver enterprise wide solutions. This is not only true in the case of SOA architectures but rather a challenge faced in systems design in general. As it has been nicely put by Conway’s law: “organizations which design systems … are constrained to produce designs which are copies of the communication structures of these organizations”.

Following 9 tips that have helped me bridge organizational silos by improving communications and collaboration between teams/departments and also by providing visibility over available assets:

Read the complete article here.

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Internet of Things – The Oracle platform by Torsten Winterberg

February 19, 2014 Leave a comment

IoT will be the next game changer. We’re entering a world, where Billions of devices will be able to play in role in higher level processes. There will be many more machines using our todays internet than humans will do. This is a summary of an Openworld session on Oracle IoT strategy.

IoT Definition from Wikipedia:
Equipping all objects in the world with minuscule identifying devices could be transformative of daily life. For instance, business may no longer run out of stock or generate waste products, as involved parties would know which products are required and consumed. One’s ability to interact with objects could be altered remotely based on immediate or present needs, in accordance with existing  end-user agreements.

Some major challenges have to be addressed:

  • Complex value chain
  • Lack of standardization to build, deploy & manage IoT applications
  • No consistency in managing security of data and identity of devices
  • Need to analyze Fast data in real time
  • No integration platform to convert data into business automation

Oracle launched their Iot platform at Openworld 2013 with this focus:

  • Standardize application development for devices, enterprise, web and mobile apps
  • Analyze IoT data to achieve real-time visibility
  • Integrate IoT data with enterprise applications & cloud infrastructure
  • Secure data & identity across devices and enterprise data center

Read the complete article here.

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Transaction Boundaries and Rollbacks in Oracle SOA Suite free online training

February 18, 2014 Leave a comment

This self-study training explains transaction boundaries in SOA mediator and BPEL components. It also presents examples of rollback behaviors in various sample transaction scenarios. You can Start the online course here.

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Cloud to On-Premise Connectivity Patterns By Rajesh Raheja

February 17, 2014 Leave a comment

Do you have a requirement to convert an Opportunity in Salesforce.com to an Order/Quote in Oracle E-Business Suite? Or maybe you want the creation of an Oracle RightNow Incident to trigger an on-premise Oracle E-Business Suite Service Request creation for RMA and Field Scheduling? If so, read on.

In a previous blog post, I discussed integrating TO cloud applications, however the use cases above are the reverse i.e. receiving data FROM cloud applications (SaaS) TO on-premise applications/databases that sit behind a firewall. Oracle SOA Suite is assumed to be on-premise with with Oracle Service Bus as the mediation and virtualization layer. The main considerations for the patterns are are security i.e. shielding enterprise resources; and scalability i.e. minimizing firewall latency. Let me use an analogy to help visualize the patterns: the on-premise system is your home – with your most valuable possessions – and the SaaS app is your favorite on-line store which regularly ships (inbound calls) various types of parcels/items (message types/service operations). You need the items at home (on-premise) but want to safe guard against misguided elements of society (internet threats) who may masquerade as postal workers and vandalize property (denial of service?). Let’s look at the patterns. Read the complete article here.

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Lonneke Dikmans: Oracle SOA Suite on Oracle Data Appliance

February 16, 2014 Leave a comment

What is Oracle SOA Suite out of the box? o-box! Watch the video here.

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Connecting Clinical and Administrative Processes: Oracle SOA Suite for Healthcare Integration

February 15, 2014 1 Comment

SOA HealthcareOne of the biggest IT challenges facing today’s health care industry is the difficulty in finding reliable, secure, and cost-effective ways to exchange information. Buyers and providers need versatile platforms for enterprise-wide information sharing. Clinicians require accurate information to provide quality care to patients while administrators need integrated information for all facets of the business operation. Both sides of the organization must be able to access information from research and development systems, practice management systems, claims systems, financial systems, and many others. Externally, these organizations must share claims data, patient records, pharmaceutical data, lab reports, and diagnostic information among third party entities – all while complying with emerging standards for formatting, processing, and storing electronic health records (EHR).

Service-oriented architecture (SOA) enables developers to integrate many types of software applications, databases and computing platforms within a particular health network as well as with community, state, and national health information exchanges. The Oracle SOA Suite for healthcare integration is designed to provide healthcare organizations with comprehensive integration capabilities within a unified middleware platform, as well as with healthcare libraries and templates for streamlining healthcare IT projects. It reduces the need for specialized skills and enforces an enterprise-wide view of critical healthcare data.  Read the complete article here.

At our SOA Community Workspace (SOA Community membership required) the latest SOA Suite for healthcare presentation is available.

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Enabling Enterprise Mobility with Oracle Fusion Middleware

February 14, 2014 Leave a comment

Sri AyyeppenFive guidelines to follow as you begin building and employing mobile applications – plus Oracle technologies and products that support your move to mobility in your enterprise.
Sri Ayyeppen, Chief Technology Officer and Co-founder of Keste, the 2013 Oracle Specialized Partner of the Year in Middleware.

Read the complete article here.

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