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In each of my domains I have defined a custom sequence inside the static mapping closure:

static mapping = { version false id generator:'sequence', params:[sequence:'MY_SEQ'] }

When I create the database, the MY_SEQ sequence is there, however grails also still makes a default hibernate_sequence. How do I get grails to not make the default, and be certain that it is using my custom sequence? Is this common for Grails to generate a default even though it won't get used?

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It is common and it comes from Hibernate by default, it's not a grails' thing. There's even a JIRA open for that, but still unresolved.

You could try to extend the dialect though! You can find a code that is kinda same thing you want in this topic.

About being sure if the table is using the specified sequence, it should, given the way you did it.

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Great, thanks! I am going to test it out as is, and if I find there is issues, then I will look into the dialect.

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