HHH-15900 Fix trigger creation on PG10+HANA and check version in OracleDialect to support insert returning generated keys

hibernate-core/src/main/java/org/hibernate/dialect/OracleDialect.java

@@ -326,7 +326,7 @@ public class OracleDialect extends Dialect {
 
 	@Override
 	public boolean supportsInsertReturningGeneratedKeys() {
-		return true;
+		return getVersion().isSameOrAfter( 12 );
 	}
 
 	/**

hibernate-core/src/test/java/org/hibernate/orm/test/generatedkeys/select/MyEntity.hbm.xml

@@ -34,7 +34,9 @@
             $$
             language plpgsql;
 
-            create or replace trigger t_i_my_entity
+            drop trigger if exists my_entity_trigger on my_entity;
+
+            create trigger my_entity_trigger
             before insert on my_entity
             for each row
             execute procedure gen_id_my_entity();]]>

hibernate-core/src/test/java/org/hibernate/orm/test/generatedkeys/selectannotated/MyEntity.hbm.xml

@@ -36,7 +36,9 @@
             $$
             language plpgsql;
 
-            create or replace trigger my_entity_trigger
+            drop trigger if exists my_entity_trigger on my_entity;
+
+            create trigger my_entity_trigger
             before insert on my_entity
             for each row
             execute procedure gen_id_my_entity();]]>