# Change historian write intervals

**URL:** <https://forum.inductiveautomation.com/t/change-historian-write-intervals/60705>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [June 13, 2022, 6:08pm UTC](https://forum.inductiveautomation.com/t/change-historian-write-intervals/60705 "2022-06-13T18:08:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![codersmurf](https://avatars.discourse-cdn.com/v4/letter/c/df788c/32.png) [@codersmurf](https://forum.inductiveautomation.com/u/codersmurf)\
**Post date:** [June 13, 2022, 6:08pm UTC](https://forum.inductiveautomation.com/t/change-historian-write-intervals/60705/1 "2022-06-13T18:08:04Z")

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So I’m having an issue with an external db being too slow compared to the local one we moved from. We figured we could try and change the historian write speed, but not sure if we have to go through the 1000’s of tags individually to do that or what. The scan class didn’t seem to make a difference.

Thanks,

jake

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**Author:** ![dkhayes117](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dkhayes117/32/68344_2.png) [@dkhayes117](https://forum.inductiveautomation.com/u/dkhayes117)\
**Post date:** [June 13, 2022, 6:29pm UTC](https://forum.inductiveautomation.com/t/change-historian-write-intervals/60705/2 "2022-06-13T18:29:23Z")

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You can export the tags, edit the json, then import them back in, or in a script with  
`system.tag` functions like `browse()`, `getConfiguration()`, and `configure()`  
[system.tag - Ignition User Manual 8.1 - Ignition Documentation (inductiveautomation.com)](https://docs.inductiveautomation.com/display/DOC81/system.tag)

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**Author:** ![codersmurf](https://avatars.discourse-cdn.com/v4/letter/c/df788c/32.png) [@codersmurf](https://forum.inductiveautomation.com/u/codersmurf)\
**Post date:** [June 13, 2022, 6:30pm UTC](https://forum.inductiveautomation.com/t/change-historian-write-intervals/60705/3 "2022-06-13T18:30:41Z")

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ah, that should work, thx