Oracle Database 19c Standard Edition 2 Release 19.0.0.0.0 - Production Version 19.16.0.0.0 

>>> print("platform.platform:", platform.platform()) platform.platform: Linux-5.10.0-17-amd64-x86_64-with-glibc2.31 >>> print("sys.maxsize > 2**32:", sys.maxsize > 2**32) sys.maxsize > 2**32: True >>> print("platform.python_version:", platform.python_version()) platform.python_version: 3.9.2 >>> print("oracledb.__version__:", oracledb.__version__) oracledb.__version__: 1.0.3 

import oracledb c = oracledb.connect(user="user", password="mypassword", dsn="servername:1521/orcl") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python3.9/dist-packages/oracledb/connection.py", line 1000, in connect return conn_class(dsn=dsn, pool=pool, params=params, **kwargs) File "/usr/local/lib/python3.9/dist-packages/oracledb/connection.py", line 128, in __init__ impl.connect(params_impl) File "src/oracledb/impl/thin/connection.pyx", line 294, in oracledb.thin_impl.ThinConnImpl.connect File "src/oracledb/impl/thin/connection.pyx", line 184, in oracledb.thin_impl.ThinConnImpl._connect_with_params File "src/oracledb/impl/thin/connection.pyx", line 157, in oracledb.thin_impl.ThinConnImpl._connect_with_description File "src/oracledb/impl/thin/connection.pyx", line 114, in oracledb.thin_impl.ThinConnImpl._connect_with_address File "src/oracledb/impl/thin/protocol.pyx", line 218, in oracledb.thin_impl.Protocol._connect_phase_two File "src/oracledb/impl/thin/protocol.pyx", line 336, in oracledb.thin_impl.Protocol._process_message File "src/oracledb/impl/thin/protocol.pyx", line 315, in oracledb.thin_impl.Protocol._process_message File "src/oracledb/impl/thin/messages.pyx", line 281, in oracledb.thin_impl.Message.process File "src/oracledb/impl/thin/messages.pyx", line 2107, in oracledb.thin_impl.ProtocolMessage._process_message TypeError: cannot convert 'NoneType' object to bytearray