HHH-19852 Replace exception-based MAX_STRING_SIZE detection with direct query

Query database_properties view directly instead of attempting a
varchar2(32000) cast to determine if MAX_STRING_SIZE is EXTENDED.

HHH-19852 fix condition

Author: Meehdi

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

@@ -132,14 +132,13 @@ public static OracleServerConfiguration fromDialectResolutionInfo(DialectResolut
 	}
 
 	private static boolean isExtended(Statement statement) {
-		try ( final ResultSet resultSet =
-					statement.executeQuery( "select cast('string' as varchar2(32000)) from dual" ) ) {
-			resultSet.next();
-			// succeeded, so MAX_STRING_SIZE == EXTENDED
-			return true;
+		try (final ResultSet resultSet =
+					statement.executeQuery("SELECT property_value FROM database_properties " +
+									"WHERE property_name = 'MAX_STRING_SIZE'")) {
+			return resultSet.next()
+					&& "EXTENDED".equalsIgnoreCase(resultSet.getString(1));
 		}
 		catch (SQLException ex) {
-			// failed, so MAX_STRING_SIZE == STANDARD, still need to check autonomous
 			return false;
 		}
 	}