How to add Quartz JobListener

I am writing a java/spring library to include in other projects that are using quartz. I need it to log something before each task is executed. I have a simple JobListener that looks like this: public …

What does each table for quartz scheduler signify?

There are few tables that quartz scheduler uses for scheduling jobs and to identify which job is running currently. It uses the following tables : qrtz_fired_triggers qrtz_simple_triggers …