Multi-platform tests

ebean-test/src/test/resources/migrationtest/dbmigration/oracle/1.3.sql

@@ -1,12 +1,11 @@
 -- Migrationscripts for ebean unittest
 -- apply changes
 create table migtest_e_ref (
-  id                            number(10) not null,
+  id                            number(10) generated by default as identity not null,
   name                          varchar2(127) not null,
   constraint uq_migtest_e_ref_name unique (name),
   constraint pk_migtest_e_ref primary key (id)
 );
-create sequence migtest_e_ref_seq;
 
 alter table migtest_ckey_detail drop constraint fk_migtest_ckey_detail_parent;
 alter table migtest_fk_cascade drop constraint fk_migtest_fk_cascade_one_id;