Restored error message raised when attempting to connect to an 11g

database.

Author: anthony-tuininga

doc/src/release_notes.rst

@@ -13,6 +13,9 @@ oracledb 2.1.1 (TBD)
 Thin Mode Changes
 +++++++++++++++++
 
+#)  Restored error message raised when attempting to connect to an 11g
+    database.
+
 Thick Mode Changes
 ++++++++++++++++++
 

src/oracledb/impl/thin/messages.pyx

@@ -1835,6 +1835,10 @@ cdef class ConnectMessage(Message):
             self.read_redirect_data_len = False
         elif buf._current_packet.packet_type == TNS_PACKET_TYPE_ACCEPT:
             buf.read_uint16(&protocol_version)
+            # check if the protocol version supported by the database is high
+            # enough; if not, reject the connection immediately
+            if protocol_version < TNS_VERSION_MIN_ACCEPTED:
+                errors._raise_err(errors.ERR_SERVER_VERSION_NOT_SUPPORTED)
             buf.read_uint16(&protocol_options)
             buf.skip_raw_bytes(20)
             buf.read_uint32(&buf._caps.sdu)

src/oracledb/impl/thin/protocol.pyx

@@ -284,11 +284,6 @@ cdef class Protocol(BaseProtocol):
             ProtocolMessage protocol_message
             AuthMessage auth_message
 
-        # check if the protocol version supported by the database is high
-        # enough; if not, reject the connection immediately
-        if self._caps.protocol_version < TNS_VERSION_MIN_ACCEPTED:
-            errors._raise_err(errors.ERR_SERVER_VERSION_NOT_SUPPORTED)
-
         # if we can use OOB, send an urgent message now followed by a reset
         # marker to see if the server understands it
         if self._caps.supports_oob \
@@ -641,11 +636,6 @@ cdef class BaseAsyncProtocol(BaseProtocol):
             ProtocolMessage protocol_message
             AuthMessage auth_message
 
-        # check if the protocol version supported by the database is high
-        # enough; if not, reject the connection immediately
-        if self._caps.protocol_version < TNS_VERSION_MIN_ACCEPTED:
-            errors._raise_err(errors.ERR_SERVER_VERSION_NOT_SUPPORTED)
-
         # create the messages that need to be sent to the server
         protocol_message = conn_impl._create_message(ProtocolMessage)
         data_types_message = conn_impl._create_message(DataTypesMessage)