The following table lists the environment variables and the files to which they point:

The following table shows the default locations of the PowerExchange message log file, DBMOVER configuration file, and license key file in 32-bit and 64-bit PowerExchange environments:

In some cases you might run 32-bit and 64-bit Windows versions of PowerExchange on the same machine. For example, you might run the PowerCenter Developer and the PowerCenter Integration Server on the same machine. In this case, the Developer client invokes 32-bit PowerExchange executables to access metadata, and the Integration Service invokes 64-bit PowerExchange executables to run workflows that connect to PowerExchange sources.

If you define PowerExchange environment variables to point to PowerExchange files, the environment variables apply to the files used by both 32-bit and 64-bit versions of PowerExchange. If you prefer to maintain separate DBMOVER or message log files for 32-bit and 64-bit versions of PowerExchange, you can keep the default locations and not define environment variables. You can also define the LOGPATH statement in the DBMOVER configuration file to specify a unique path and directory for PowerExchange message log files on a Windows system. If you also specify a value in the DETAIL_LOGPATH environment variable, the environment variable overrides the LOGPATH statement.