Definition
In catalina.out, we could see two different date format such as:
18-Feb-2019 15:36:57.753 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 8835 ms
2019-02-18 15:36:57,795 JIRA-Bootstrap INFO [c.a.j.config.database.SystemDatabaseConfigurationLoader] Reading database configuration from /Users/annamonica/jira_home/JIRA_80/dbconfig.xml
This is because of JIRA and Tomcat use different formats.
Suggestion
Standardized the date format as it will help to facilitate centralized monitoring. Analyzing a unified log format is greatly beneficial to monitor application health and facilitate troubleshooting.
In logging.properties (taken from this website) - change the default in $jira-install/conf/logging.properties to:
java.util.logging.ConsoleHandler.level = FINE
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
java.util.logging.SimpleFormatter.format=%1$tF %1$tT %4$s [%2$s] %3$s %5$s %n
Then, restart Jira.