oracle

Oracle

When using Oracle, when you create a new table a corresponding sequence is created [tablename_seq] for use for primary key values.
To make use of this however you'll need to change your model to implement a beforeCreate() callback that sets the id value based on the next value in the sequence.

<cfcomponent extends="Model" output="false">
  <cffunction name="init">
    <cfset beforeCreate("getPrimaryKeyValue")>
  </cffunction>
  
  <cffunction name="getPrimkaryKeyValue)">
    <cfquery datasource="#get('dataSourceName')#" name="nextSequenceValue">
      SELECT
        [tablename_seq].NEXTVAL AS ID
      FROM
        dual;
    </cfquery>
    <cfset this.id = nextSequenceValue.ID/>
  </cffunction>
</cfcomponent>