#2473 - Oracle - column alias - Change such that OraclePlatform doesn't use column alias

So with #2254 we regressed OraclePlatform to use column alias. This really should have introduced an Oracle12 platform instead. 18c onwards and we don't want the column alias.

ebean-test/src/test/java/io/ebean/config/dbplatform/OraclePlatformTest.java

@@ -2,28 +2,34 @@ package io.ebean.config.dbplatform;
 
 import io.ebean.config.PlatformConfig;
 import io.ebean.config.dbplatform.oracle.Oracle11Platform;
+import io.ebean.config.dbplatform.oracle.Oracle12Platform;
 import io.ebean.config.dbplatform.oracle.OraclePlatform;
 import org.junit.jupiter.api.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-public class OraclePlatformTest {
+class OraclePlatformTest {
 
   @Test
-  public void columnAliasPrefix_Oracle11Platform() {
+  void columnAliasPrefix_Oracle11Platform() {
     Oracle11Platform platform11 = new Oracle11Platform();
     assertThat(platform11.columnAliasPrefix).isEqualTo("c");
   }
 
   @Test
-  public void columnAliasPrefix_OraclePlatform() {
-    OraclePlatform platform = new OraclePlatform();
-    assertThat(platform.columnAliasPrefix).isEqualTo("c");
+  void columnAliasPrefix_Oracle12Platform() {
+    Oracle12Platform platform12 = new Oracle12Platform();
+    assertThat(platform12.columnAliasPrefix).isEqualTo("c");
   }
 
   @Test
-  public void uuid_default() {
+  void columnAliasPrefix_OraclePlatform() {
+    OraclePlatform platform = new OraclePlatform();
+    assertThat(platform.columnAliasPrefix).isNull();
+  }
 
+  @Test
+  void uuid_default() {
     OraclePlatform platform = new OraclePlatform();
     platform.configure(new PlatformConfig(), false);
     DbPlatformType dbType = platform.getDbTypeMap().get(DbPlatformType.UUID);
@@ -31,8 +37,7 @@ public class OraclePlatformTest {
   }
 
   @Test
-  public void uuid_as_binary() {
-
+  void uuid_as_binary() {
     OraclePlatform platform = new OraclePlatform();
     PlatformConfig config = new PlatformConfig();
     config.setDbUuid(PlatformConfig.DbUuid.AUTO_BINARY);