Performing Regular Queue Maintenance
Regular queue maintenance is important for system performance. Failed and severe entries can accumulate, resulting in large queue tables and slowed performance.
View failed and severe entries on a regular basis and either remove them or reset them to ready. When first deploying a production system, it is a good idea to do regular queue maintenance on a weekly basis. When you are more familiar with the patterns of your particular site, you can alter that schedule appropriately.
As the administrator, you must decide whether failed and severe entries can safely be deleted or must be reset to ready. This decision depends on the particular queue and on site practices.
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By default, completed tasks are deleted from the queue; however, if the wt.queue.removeCompleted property is set to retain them, you will also need to remove completed entries as part of regular maintenance.
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Follow these steps to develop a regular routine for queue maintenance:
1. From the Queue Management table, locate the row corresponding to the queue for which you want to do the regular maintenance.
2. Either right-click and select View Information from the actions menu or click the view information 
icon in the row.
icon in the row.The information page for the queue opens.
3. From the Queue Entries table on the information page, sort the rows using the Status column to group all queues with a similar status (if the entries are not already sorted).
4. Examine each failed status entry and decide whether to delete the entry or reset it.
◦ To remove failed entries, select the entries using the checkbox in the left most column of the table and click the delete icon 
.
.Alternately, select the entries to be deleted and then select Delete from the right-click actions menu.
◦ To reset failed entries, select the entries using the checkbox in the left most column of the table and click the reset icon 
.
.◦ Alternately, select the entries to be reset and then select Reset from the right-click actions menu.
5. Examine each severe status entry and decide whether to delete the entry or reset it.
◦ To remove severe entries, select the entries using the checkbox in the left most column of the table and click the delete icon .
.Alternately, select the entries to be deleted and then select Delete from the right-click actions menu.
◦ To reset severe entries, select the entries using the checkbox in the left most column of the table and click the reset icon .
.◦ Alternately, select the entries to be reset and then select Reset from the right-click actions menu.
6. Repeat the process until you have either deleted or reset all failed and severe entries in each queue.