August 2017
Beginner to intermediate
426 pages
9h 36m
English
Content preview from Learning Informatica PowerCenter 10.x - Second Edition
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Optimizing lookup transformation
Lookup transformations are one of the complex transformations in Informatica PowerCenter. Optimizing lookups will significantly help in improving the performance.
When you use lookup transformation in the mapping, use the concurrent cache. When you use concurrent cache, the integration service caches the lookup table data before it starts processing the data from the source; otherwise, lookup performs cache on row-wise basis, which utilizes more time. So it is recommended that you enable caching when you use lookup.
If your mapping contains multiple lookups that look up on the same lookup table, it is suggested you share the cache in order to avoid performing caching multiple times.
You can reduce the processing ...
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