This figure shows the directory structure of the ADR for a single Oracle Net Listener instance, where each directory is represented by a folder. At the top is a folder labeled as "ADR base". Beneath ADR base is a directory named diag, beneath which is a directory named tnslsnr. Beneath the tnslsnr directory is a directory whose name is the host name. Beneath that directory is a directory whose name is the listener alias name. This directory is flagged by a label as the ADR home for the Oracle Net Listener instance. Beneath the ADR home directory (the directory whose name is the listener alias name) are the following subdirectories: alert, cdump, incident, trace, and one named "(others)", which indicates a number of other ADR home subdirectories.