Posts tagged "scheduler"

LiveCycle ES2: This scheduler instance (SchedulerName) is still active but was recovered by another instance in the cluster

Posted on July 17, 2012 by dmcmahon | Comments (0)

Issue

If you are working with LiveCycle ES2 in a cluster you may notice the following message in the server log:

org.quartz.impl.jdbcjobstore.JobStoreSupport findFailedInstances “This scheduler instance (<SchedulerName>) is still active but was recovered by another instance in the cluster. This may cause inconsistent behavior”.

Reason

This exception often occurs when the clock times on the cluster nodes are not synchronized.  If the clock times on cluster nodes are more than 1.7 seconds out of synch you will start to see these Quartz messages in the log.

Solution

Synchronize the time on all cluster nodes and then restart the cluster.  The messages should no longer appear in the log.

reference: (1647846)

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LiveCycle ES: CRON expressions and documentation for Quartz Scheduler

Posted on July 4, 2009 by dmcmahon | Comments (0)

Issue

 If you wish to schedule an LDAP synchronization in LiveCycle you can do so using CRON expressions in the Quartz Scheduler.  The Quartz Scheduler is an open source technology and you can find the official documentation here:

http://www.opensymphony.com/quartz/wikidocs/CronTriggers%20Tutorial.html

Explanation

 The meaning of the fields we use in the CRON expressions are as follows:

Field Name Mandatory Value Range Special Characters
Seconds Yes 0-59 , – * /
Minutes Yes 0-59 , – * /
Hours Yes 0-23 , – * /
Day of month Yes 1-31 , – * ? / L W C
Month Yes 1-12 or JAN-DEC , – * /
Day of week Yes 1-7 or SUN-SAT , – * ? / L C #
Year No empty or 1 , – * /

Examples

0 0 12 * * ?                         Fire at 12pm (noon) every day

0 15 10 ? * *                       Fire at 10:15am every day

0 15 10 * * ?                       Fire at 10:15am every day

0 15 10 * * ? *                     Fire at 10:15am every day

0 15 10 * * ? 2005               Fire at 10:15am every day during the year 2005

0 * 14 * * ?                         Fire every minute starting at 2pm and ending at 2:59pm, every day

0 0/5 14 * * ?                      Fire every 5 minutes starting at 2pm and ending at 2:55pm, every day

0 0/5 14,18 * * ?                  Fire every 5 minutes starting at 2pm and ending at 2:55pm, AND fire every 5 minutes starting at 6pm and ending at 6:55pm, every day

0 0-5 14 * * ?                       Fire every minute starting at 2pm and ending at 2:05pm, every day

0 10,44 14 ? 3 WED            Fire at 2:10pm and at 2:44pm every Wednesday in the month of March

0 15 10 ? * MON-FRI            Fire at 10:15am every Monday, Tuesday, Wednesday, Thursday and Friday

0 15 10 15 * ?                      Fire at 10:15am on the 15th day of every month

0 15 10 L * ?                        Fire at 10:15am on the last day of every month

0 15 10 ? * 6L                      Fire at 10:15am on the last Friday of every month

0 15 10 ? * 6L                      Fire at 10:15am on the last Friday of every month

0 15 10 ? * 6L 2002-2005      Fire at 10:15am on every last friday of every month during the years 2002, 2003, 2004 and 2005

0 15 10 ? * 6#3                    Fire at 10:15am on the third Friday of every month

0 0 12 1/5 * ?                       Fire at 12pm (noon) every 5 days every month, starting on the first day of the month

0 11 11 11 11 ?                    Fire every November 11th at 11:11am

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