HHH-19651: Make the DB2i detection more reliable

Author: BGNut

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

@@ -44,11 +44,15 @@ public Dialect createDialect(DialectResolutionInfo info) {
 						return new DB2zDialect( info );
 					}
 					case "QSQ": {
-						// i
+						// i, this only works if "use drda metadata version" property is set to true in the drivers properties
 						return new DB2iDialect( info );
 					}
 				}
 			}
+			if ("DB2 UDB for AS/400".equals(info.getDatabaseName())) {
+				// i
+				return new DB2iDialect( info );
+			}
 
 			return new DB2Dialect( info );
 		}

hibernate-core/src/test/java/org/hibernate/orm/test/dialect/resolver/DialectFactoryTest.java

@@ -156,8 +156,8 @@ public void testPreregisteredDialects() {
 		testDetermination( "DB2/SUN", DB2Dialect.class, resolver );
 		testDetermination( "DB2/LINUX390", DB2Dialect.class, resolver );
 		testDetermination( "DB2/AIX64", DB2Dialect.class, resolver );
-		testDetermination( "DB2 UDB for AS/400", DB2Dialect.class, resolver );
-		testDetermination( "DB2 UDB for AS/400", 7, 3, DB2Dialect.class, resolver );
+		testDetermination( "DB2 UDB for AS/400", DB2iDialect.class, resolver );
+		testDetermination( "DB2 UDB for AS/400", 7, 3, DB2iDialect.class, resolver );
 		testDetermination( "Oracle", 8, OracleDialect.class, resolver );
 		testDetermination( "Oracle", 9, OracleDialect.class, resolver );
 		testDetermination( "Oracle", 10, OracleDialect.class, resolver );