About Environment Variables for System Logging The SIEBEL_LOG_EVENTS environment variable sets the event logging level, which determines the extent of information captured in the log file. More information is captured when the environment variable is set to a higher numeric value, and less information is captured when the variable is set to a lower numeric value. The numeric value is inversely proportional to the severity of the information—0 is more severe than 5 for instance. More disk space is consumed and performance is hindered when the value is set to a value of 5 than a value of 0. 0-Fatal 1-Errors 2-Warnings 3-Informational 4-Details 5-Diagnostic The SIEBEL_LOG_DIR environment variable determines the log file location. Set this variable to change the location from the default directory. Make sure this directory already exists, access permission to write a file in that location is available, and sufficient space is free to support the log file. Source: Oracle Docs Configure Sy...