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Data Warehousing Informatica - Interview Questions and Answers
Name the output files that are created by the Informatica server at runtime.
During runtime, the Informatica server creates the following output files :

Informatica server log: Generally, this type of file is stored in Informatica's home directory and is used to create a log for all status and error messages (default name: pm.server.log). In addition, an error log can also be generated for all error messages.

Session log file: For each session, session log files are created that store information about sessions, such as the initialization process, the creation of SQL commands for readers and writers, errors encountered, and the load summary. Based on the tracing level that you set, the number of details in the session log file will differ.

Session detail file: Each target in mapping has its own load statistics file, which contains information such as the target name and the number of written or rejected rows. This file can be viewed by double-clicking the session in the monitor window.

Performance detail file: This file is created by selecting the performance detail option on the session properties sheet and it includes session performance details that can be used to optimize the performance.
Reject file: This file contains rows of data that aren't written to targets by the writer.

Control file: This file is created by the Informatica server if you execute a session that uses the external loader and it contains information about the target flat file like loading instructions for the external loader and data format.

Post-session email: Using a post-session email, you can automatically inform recipients about the session run. In this case, you can create two different messages; one for the session which was successful and one for the session that failed.

Indicator file: The Informatica server can create an indicator file when the flat file is used as a target. This file contains a number indicating whether the target row has been marked for insert, update, delete or reject.

Output file: Based on the file properties entered in the session property sheet, the Informatica server creates the target file if a session writes to it.

Cache files: Informatica server also creates cache files when it creates the memory cache.