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Grails - Exisiting Oracle Table

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Grails is very straightforward in creating NEW tables, but I am having trouble mapping to an EXISTING table. One of the problems being that it appends id and version to each table. Maybe I need to add some entries for static mapping??? Thanks.
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You can declare a custom identify for your tables, see the docs at Custom%20Database%20Identity
Then Grails will not attempt to create an id field.

Also you can turn off optimistic locking, which prevents the version field form being created: http://grails.org/doc/1.1.x/ref/Database%20Mapping/version.html

These questions made me ask if you have read the Grails docs, and/or if you have purchased a Grails book - there are several good ones on the market.
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