The default log files and logging levels are defined in logging.properties file under the below location
/home/oracle/tomcat_09_Aug_2020/apache-tomcat-9.0.36/conf.
The list is arranged in order by level of detail from the least (SEVERE) to the greatest (FINEST).
Note that a level includes all the content of previous levels.
For example, INFO specifies that the log should include informational messages, potential problems (WARNING), and serious failures (SEVERE).
In Tomcat (Example: here the version is 9.0.36) Log files are written to the /logs directory under $CATALINA_BASE/logs
*catalina.log, a log with entries that describe server activity
*catalina.out, a log for system output and standard error messages
*localhost.log, a log file for tracking Web application activity
*localhost_access.log, a log for tracking requests processed by the server
*host_manager.log, a log for Tomcat’s host-manager.war Web application
*manager.log, a log for Tomcat’s manager.war Web application
