# Problems after update 5.7.17-11 to 5.7.17-12(mysqldump: Couldn't execute 'SELECT COUNT(\*) FROM INFOR

**URL:** <https://forums.percona.com/t/problems-after-update-5-7-17-11-to-5-7-17-12-mysqldump-couldnt-execute-select-count-from-infor/5511>\
**Category:** Other MySQL® Questions\
**Created:** [March 28, 2017, 8:14am UTC](https://forums.percona.com/t/problems-after-update-5-7-17-11-to-5-7-17-12-mysqldump-couldnt-execute-select-count-from-infor/5511 "2017-03-28T08:14:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![aleksey.filippov](https://avatars.discourse-cdn.com/v4/letter/a/71e660/32.png) [@aleksey.filippov](https://forums.percona.com/u/aleksey.filippov)\
**Post date:** [March 28, 2017, 8:14am UTC](https://forums.percona.com/t/problems-after-update-5-7-17-11-to-5-7-17-12-mysqldump-couldnt-execute-select-count-from-infor/5511/1 "2017-03-28T08:14:29Z")

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1. Update Percona Server from 5.7.17-11 to 5.7.17-12
2. Restart mysqld
3. mysqldump --all-databases \> backup.sql

mysqldump: Couldn’t execute ‘SELECT COUNT(\*) FROM INFORMATION\_SCHEMA.SESSION\_VARIABLES WHERE VARIABLE\_NAME LIKE ‘rocksdb\_skip\_fill\_cache’’: The ‘INFORMATION\_SCHEMA.SESSION\_VARIABLES’ feature is disabled; see the documentation for ‘show\_compatibility\_56’ (3167)

Problem exist on ubuntu 16.10 and CentOS 7

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**Author:** ![George\_Lorch](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/george_lorch/32/1108_2.png) [@George\_Lorch](https://forums.percona.com/u/George_Lorch)\
**Post date:** [March 28, 2017, 9:18am UTC](https://forums.percona.com/t/problems-after-update-5-7-17-11-to-5-7-17-12-mysqldump-couldnt-execute-select-count-from-infor/5511/2 "2017-03-28T09:18:56Z")

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See [url][https://bugs.launchpad.net/percona-server/+bug/1676401[/url]](https://bugs.launchpad.net/percona-server/+bug/1676401%5B/url%5D)