![]() ![]() ![]() How can we update a record in target table without using Update strategy?Ī target table can be updated without using 'Update Strategy'. By default, Informatica cache is static cache.Ī lookup cache can also be divided as persistent or non-persistent based on whether Informatica retains the cache even after the completion of session run or deletes it. On the other hand, A dynamic cache is refreshed during the session run by inserting or updating the records in cache based on the incoming source data. A static cache is one which does not modify the cache once it is built and it remains same during the session run. And Cached lookup can be either static or dynamic. Informatica Lookups can be cached or un-cached (No cache). You may also read this article to know how to tune the performance of aggregator transformation 5. inside a source qualifier transformation, unless there is a chance that already sorted records from source qualifier can again become unsorted before reaching aggregator. It is often a good idea to sort the record set in database level ( click here to see why?) e.g. The record set should be sorted on those columns that are used in Group By operation. What can we do to improve the performance of Informatica Aggregator Transformation?Īggregator performance improves dramatically if records are sorted before passing to the aggregator and " sorted input" option under aggregator properties is checked. If one record does not match filter condition, the record is blocked ![]() If a certain record does not match any of the routing conditions, the record is routed to default groupįilter transformation does not have a default group. Router transformation itself does not block any record. Such groups can be mutually inclusive (Different groups may contain same record)įilter transformation restricts or blocks the incoming record set based on one given condition. Router transformation divides the incoming records into multiple groups based on some condition. What is the difference between Router and Filter?įollowing differences can be noted: Router On the other hand a passive transformation is the one which does not change the number of rows that pass through it.
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