Purpose

To change the time of your content indexing, you will need to edit the Quartz configuration. Confluence uses Quartz for scheduling periodic jobs. Confluence Content Indexing frequency is handled using a cron job set in schedulingSubsystemContext.xml.

Solution

1. Open the Quartz configuration file schedulingSubsystemContext.xml located under confluence/WEB-INF/lib/confluence-x.x.x.jar. Where x.x.x is your Confluence version number.
   For Confluence earlier than 2.6, the index cron job is located in <install dir>\confluence\WEB-INF\classes\schedulingSubsystemContext.xml.

2. Find the following section of the file:

   <bean id="indexQueueFlushTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
       <property name="jobDetail">
           <ref bean="indexQueueFlushJob"/>
       </property>
       <property name="cronExpression">
           <value>0 0/5 * * * ?</value>
       </property>
   </bean>
   

3. The string '0 0/5 * * * ?' sets up a Cron Trigger for the job to run every 5 minutes.
4. Place the modified file as <install dir>\confluence\WEB-INF\classes\schedulingSubsystemContext.xml. It will take precedence over the jarred version.
5. You can set a new time by editing this string. Note that the date and time format in this configuration file is in this order:
   Second minute hour day
6. Restart Confluence.

 For example, to set the new time to twenty past ten PM, change the string to '0 20 22 * * ?'.

For complete details on the formatting of the cron string, please see http://www.opensymphony.com/quartz/api/org/quartz/CronTrigger.html.