Question { 34356 }

How to identify bottlenecks in
sources,targets,mappings,workflow,system and how to
increase the performance?

Answer

Bottleneck in Informatica
Bottleneck in ETL Processing is the point by which the performance of the ETL Process is slowr.
When ETL Process is in progress first thing login to workflow monitor and observe performance statistic. I.e. observe processing rows per second. In SSIS and Datastage when you run the job you can see at every level how many rows per second is processed by the server.
Mostly bottleneck occurs at source qualifier during fetching data from source joiner aggregator Lookup Cache Building Session.
Removing bottleneck is performance tuning.