 | Level: Advanced Simon Harris (simond_harris@uk.ibm.com), WebSphere Information Integrator performance team, IBM
03 Feb 2005
Updated 11 Jul 2005 Explore several key performance enhancements introduced in WebSphere® Information Integrator V8.2. In particular, this article includes a detailed discussion of trusted and fenced wrapper architecture, along with improvements in SMP and MPP parallelism.
Information integration provides an end-to-end solution
for transparently managing both the volume and diversity of data that exists in
enterprises and organizations today. The underlying principle of information integration is for users to be able to see
all of the data they use as if it resides at a single source.
WebSphere Information Integrator (WebSphere II) shields the requester
from all the complexities associated with
accessing data in diverse locations, including connectivity, semantics, formats,
and access methods. Using a standards-based language such as structured
query language (SQL) WebSphere II
enables users, or applications acting on their behalf, to access information
transparently without concern for its physical implementation.
In brief, this article covers the following performance-related improvements:
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Fenced and trusted wrapper architecture. We explore the WebSphere II
process model and describe the difference between trusted and fenced
wrappers; the latter being a prerequisite for exploitation of partitioned
database resources. We also discuss the scalability benefits the fenced
wrapper can bring to federated servers supporting a high number of concurrent users.
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Intra-partition parallelism for SMP systems. We discuss when it is appropriate
to enable intra-partition parallelism in a federated environment and the benefits
that can be achieved in doing so.
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Inter-partition parallelism for partitioned database servers, detailing how
the new features improve resource utilization and query response times for WebSphere II
instances that are partitioned.
Download | Description | Name | Size | Download method |
|---|
| Article in PDF format | dm-0502harris.pdf | 281 KB | FTP|HTTP |
About the author | | Simon Harris is a member of the WebSphere Information Integrator performance team in the Silicon Valley
Laboratory. Simon has been working with federated database technology since 1995, supporting
many customers in both a pre- and post-sales capacity throughout Europe, the Middle-East, and Africa. |
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