PowerExchange alternative log files
. If you enable alternative logging by defining the TRACING statement in the DBMOVER configuration file, PowerExchange writes runtime messages from PowerExchange components, programs, and commands to a set of alternative message log files that are used on a rotating basis. PowerExchange dynamically allocates these alternative log files if they do not exist. When an alternative log file becomes full, PowerExchange switches to another alternative log file and begins overwriting any data in that file. Informatica recommends that you use alternative logging to prevent out-of-space conditions on log files, to improve logging performance, and to control the amount of data that is logged for long-running jobs. Also, with alternative logging, PowerExchange buffers messages and writes them to disk files based on a customized flush interval, thereby reducing I/O activity on these files.