# Issue with \`s\_core\_sessions\` after update to Shopware 5.2.20

**URL:** https://forum.shopware.com/t/issue-with-s-core-sessions-after-update-to-shopware-5-2-20/45637
**Category:** International (English Only)
**Tags:** general
**Created:** [8. Mai 2017 um 14:52 UTC](https://forum.shopware.com/t/issue-with-s-core-sessions-after-update-to-shopware-5-2-20/45637 "2017-05-08T14:52:04Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![odessite](https://avatars.discourse-cdn.com/v4/letter/o/f05b48/32.png) [@odessite](https://forum.shopware.com/u/odessite)
#### Post date: [8. Mai 2017 um 14:52 UTC](https://forum.shopware.com/t/issue-with-s-core-sessions-after-update-to-shopware-5-2-20/45637/1 "2017-05-08T14:52:04Z")

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Hello guys,

We got a strange error after update shopware to 5.2.20.

[http://joxi.ru/LmGeBL9He5lxvA](http://joxi.ru/LmGeBL9He5lxvA)

Looks like table `s_core_sessions` all the time locked, because of this, probably, we have CPU load to 100%.

Maybe someone know what can be reason of such behavior?

Many thanks!

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### Author: ![Moritz\_Naczenski](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.shopware.com/moritz_naczenski/32/7792_2.png) [@Moritz\_Naczenski](https://forum.shopware.com/u/Moritz_Naczenski)
#### Post date: [8. Mai 2017 um 16:27 UTC](https://forum.shopware.com/t/issue-with-s-core-sessions-after-update-to-shopware-5-2-20/45637/2 "2017-05-08T16:27:42Z")

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Please have a look at our developer documentation: [Shopware Session handling](https://developers.shopware.com/sysadmins-guide/sessions/#session-locking)

&nbsp;

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### Author: ![odessite](https://avatars.discourse-cdn.com/v4/letter/o/f05b48/32.png) [@odessite](https://forum.shopware.com/u/odessite)
#### Post date: [8. Mai 2017 um 16:50 UTC](https://forum.shopware.com/t/issue-with-s-core-sessions-after-update-to-shopware-5-2-20/45637/3 "2017-05-08T16:50:05Z")

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Thank you Moritz, already find it, but I’m not sure, do I need to disable locking?

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### Author: ![Moritz\_Naczenski](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.shopware.com/moritz_naczenski/32/7792_2.png) [@Moritz\_Naczenski](https://forum.shopware.com/u/Moritz_Naczenski)
#### Post date: [8. Mai 2017 um 17:32 UTC](https://forum.shopware.com/t/issue-with-s-core-sessions-after-update-to-shopware-5-2-20/45637/4 "2017-05-08T17:32:53Z")

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It depends on the issues you are facing. Are there too many sessions (many different users) or long running querries that are blocking the session querries?  
The disabling can be a temporary solution but you should try to figure out what is blocking the querries. Perhaps a slow querry log can help you with that. If there are too many users it can be helpful to use redis or memcache as session handler.

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### Author: ![odessite](https://avatars.discourse-cdn.com/v4/letter/o/f05b48/32.png) [@odessite](https://forum.shopware.com/u/odessite)
#### Post date: [8. Mai 2017 um 17:48 UTC](https://forum.shopware.com/t/issue-with-s-core-sessions-after-update-to-shopware-5-2-20/45637/5 "2017-05-08T17:48:39Z")

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Long running query…

Yes, looks like you right, we have one seo plugin which works not good for us, but we still waiting answer from support…

Thank you Moritz, will waiting when support will fix this issue and then we will check.