Application and System Log Files
There are separate log files for application-generated messages and for system-generated messages. This allows for separation of personally identifiable information (such as social security numbers, for example) and system messages (such as merge notices and other system activity). The application log files are configured on a per-App Server basis, and the system log files are configured at the group level. Each host has its own set of log files (both application and system log files). Things like uncaught application errors, which might contain data from an application, are sent to the application logs. Things like MarkLogic Server system activity are sent to the system log files.