Quartz Scheduler Job run once, then gives an error

Question

I have a strange behavior from Quartz. The job was able to run after I clear the quartz database tables and tomcat restart. And after a few times of full run, the following error occur. I ran out of clue, anyone had this problem below?

Update:

If I changed the TRIGGER_STATE status from "ERROR" to "WAITING", that job will run again and after a few full cycle, it changed to "ERROR" with the same error stack trace.

[scheduler_QuartzSchedulerThread] 00:07:01,007 ERROR org.quartz.impl.jdbcjobstore.JobStoreSupport.triggerFired(JobStoreSupport.java:2908) - Error retrieving job, setting trigger state to ERROR.
org.quartz.JobPersistenceException: Couldn't retrieve job because a required class was not found: com.mbww.scgid.social.facebook.RunFbPageHourlyJob [See nested exception: java.lang.ClassNotFoundException: com.social.facebook.RunFbPageHourlyJob]
        at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveJob(JobStoreSupport.java:1416)
        at org.quartz.impl.jdbcjobstore.JobStoreSupport.triggerFired(JobStoreSupport.java:2903)
        at org.quartz.impl.jdbcjobstore.JobStoreSupport$38.execute(JobStoreSupport.java:2871)
        at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3788)
        at org.quartz.impl.jdbcjobstore.JobStoreSupport.triggerFired(JobStoreSupport.java:2865)
        at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:319)
Caused by: java.lang.ClassNotFoundException: com.mbww.scgid.social.facebook.RunFbPageHourlyJob
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1483)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1329)
        at org.springframework.scheduling.quartz.ResourceLoaderClassLoadHelper.loadClass(ResourceLoaderClassLoadHelper.java:75)
        at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectJobDetail(StdJDBCDelegate.java:894)
        at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveJob(JobStoreSupport.java:1404)
    ... 5 more

Answer 1

This is probably a classpath error where you missed to define your classpath. As there's something wrong with your classpath, your app can't find the necessary jar and thus the class it needs.