# pt-online-schema-change table cannot already have triggers

**URL:** <https://forums.percona.com/t/pt-online-schema-change-table-cannot-already-have-triggers/6185>\
**Category:** Percona Toolkit\
**Created:** [February 9, 2018, 4:52pm UTC](https://forums.percona.com/t/pt-online-schema-change-table-cannot-already-have-triggers/6185 "2018-02-09T16:52:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![zober](https://avatars.discourse-cdn.com/v4/letter/z/919ad9/32.png) [@zober](https://forums.percona.com/u/zober)\
**Post date:** [February 9, 2018, 4:52pm UTC](https://forums.percona.com/t/pt-online-schema-change-table-cannot-already-have-triggers/6185/1 "2018-02-09T16:52:55Z")

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I’m trying to run pt-online-schema-change script and getting a “Table already has triggers” error, however I ran a SHOW TRIGGERS on the database and there are no triggers in the entire database. I’m running on a replication db.

Thanks

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**Author:** ![carlos.salguero](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/carlos.salguero/32/20_2.png) [@carlos.salguero](https://forums.percona.com/u/carlos.salguero)\
**Post date:** [February 9, 2018, 6:18pm UTC](https://forums.percona.com/t/pt-online-schema-change-table-cannot-already-have-triggers/6185/2 "2018-02-09T18:18:47Z")

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Hi,

Could you please re run the program setting PTDEBUG=1?  
PTDEBUG=1 pt-online-schema-change …

and then paste the output here or in Jira? ([https://jira.percona.com](https://jira.percona.com))  
It also would be helpful to know the toolkit version and MySQL version.

Regards