# Pre-processed partition stopped processing

**URL:** <https://forum.inductiveautomation.com/t/pre-processed-partition-stopped-processing/18962>\
**Category:** Ignition\
**Tags:** database\
**Created:** [July 25, 2018, 12:30am UTC](https://forum.inductiveautomation.com/t/pre-processed-partition-stopped-processing/18962 "2018-07-25T00:30:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![joeyjojoshabadu](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@joeyjojoshabadu](https://forum.inductiveautomation.com/u/joeyjojoshabadu)\
**Post date:** [July 25, 2018, 12:30am UTC](https://forum.inductiveautomation.com/t/pre-processed-partition-stopped-processing/18962/1 "2018-07-25T00:30:01Z")

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We are using pre-processed partitions of 60 seconds to reduce the CPU burden when displaying plots with long time periods.

The connection to the database faulted for unknown reasons and then the pre-processed partitions stopped processing. The data in the pre-processed partition table stops at the same time the database faulted.

My co-worker then turned off pre-processed partitions.

Is there are risk to turning them back on?

Will it go back and process the last month in which the partitions have been turned off?

If I change the partition size will it only take effect from that moment forward?