diff --git a/doc/src/api_manual/deprecations.rst b/doc/src/api_manual/deprecations.rst
index 188bb7d..982a71a 100644
--- a/doc/src/api_manual/deprecations.rst
+++ b/doc/src/api_manual/deprecations.rst
@@ -48,6 +48,8 @@ if applicable. The most recent deprecations are listed first.
       - Replace with parameter name `session_callback`
     * - `maxSessionsPerShard` parameter to :meth:`cx_Oracle.SessionPool()`
       - Replace with parameter name `max_sessions_per_shard`
+    * - `SessionPool.tnsentry`
+      - Replace with :data:`SessionPool.dsn`
     * - `payloadType` parameter to :meth:`Connection.queue()`
       - Replace with parameter name `payload_type` if using keyword parameters.
     * - `ipAddress` parameter to :meth:`Connection.subscribe()`
@@ -72,6 +74,8 @@ if applicable. The most recent deprecations are listed first.
       - Replace with parameter name `encoding_errors`
     * - `Cursor.fetchraw()`
       - Replace with :meth:`Cursor.fetchmany()`
+    * - `newSize` parameter to :meth:`LOB.trim()`
+      - Replace with parameter name `new_size`
     * - `Queue.deqMany`
       - Replace with :meth:`Queue.deqmany()`
     * - `Queue.deqOne`
@@ -86,6 +90,18 @@ if applicable. The most recent deprecations are listed first.
       - Replace with :meth:`Queue.enqoptions`
     * - `Queue.payloadType`
       - Replace with :meth:`Queue.payload_type`
+    * - `Subscription.ipAddress`
+      - Replace with :attr:`Subscription.ip_address`
+    * - `Message.consumerName`
+      - Replace with :attr:`Message.consumer_name`
+    * - `Message.queueName`
+      - Replace with :attr:`Message.queue_name`
+    * - `Variable.actualElements`
+      - Replace with :attr:`Variable.actual_elements`
+    * - `Variable.bufferSize`
+      - Replace with :attr:`Variable.buffer_size`
+    * - `Variable.numElements`
+      - Replace with :attr:`Variable.num_elements`
 
 
 .. list-table:: Deprecated in 8.0
diff --git a/doc/src/api_manual/lob.rst b/doc/src/api_manual/lob.rst
index 061ac1a..6ae61f8 100644
--- a/doc/src/api_manual/lob.rst
+++ b/doc/src/api_manual/lob.rst
@@ -74,7 +74,7 @@ See :ref:`lobdata` for more information about using LOBs.
     for all but supplemental characters.
 
 
-.. method:: LOB.trim([newSize=0])
+.. method:: LOB.trim(new_size=0)
 
     Trim the LOB to the new size.
 
@@ -87,7 +87,7 @@ See :ref:`lobdata` for more information about using LOBs.
     .. versionadded:: 8.0
 
 
-.. method:: LOB.write(data, [offset=1])
+.. method:: LOB.write(data, offset=1)
 
     Write the data to the LOB object at the given offset. The offset is in
     bytes for BLOB type LOBs and in UCS-2 code points for CLOB and NCLOB type
diff --git a/doc/src/api_manual/session_pool.rst b/doc/src/api_manual/session_pool.rst
index ffd9fd5..756c5ae 100644
--- a/doc/src/api_manual/session_pool.rst
+++ b/doc/src/api_manual/session_pool.rst
@@ -185,6 +185,10 @@ SessionPool Object
     This read-only attribute returns the TNS entry of the database to which a
     connection has been established.
 
+    .. deprecated:: 8.2
+
+        Use the attribute :attr:`~SessionPool.dsn` instead.
+
 
 .. attribute:: SessionPool.username
 
diff --git a/doc/src/api_manual/subscription.rst b/doc/src/api_manual/subscription.rst
index fd089fb..264d795 100644
--- a/doc/src/api_manual/subscription.rst
+++ b/doc/src/api_manual/subscription.rst
@@ -29,7 +29,7 @@ Subscription Object
     subscriptions, the value is 0.
 
 
-.. attribute:: Subscription.ipAddress
+.. attribute:: Subscription.ip_address
 
     This read-only attribute returns the IP address used for callback
     notifications from the database server. If not set during construction,
@@ -37,6 +37,12 @@ Subscription Object
 
     .. versionadded:: 6.4
 
+    .. versionchanged:: 8.2
+
+        For consistency and compliance with the PEP 8 naming style, the
+        attribute `ipAddress` was renamed to `ip_address`. The old name will
+        continue to work for a period of time.
+
 
 .. attribute:: Subscription.name
 
@@ -106,7 +112,7 @@ Message Objects
     to the callback procedure specified when a subscription is created.
 
 
-.. attribute:: Message.consumerName
+.. attribute:: Message.consumer_name
 
     This read-only attribute returns the name of the consumer which generated
     the notification. It will be populated if the subscription was created with
@@ -115,6 +121,12 @@ Message Objects
 
     .. versionadded:: 6.4
 
+    .. versionchanged:: 8.2
+
+        For consistency and compliance with the PEP 8 naming style, the
+        attribute `consumerName` was renamed to `consumer_name`. The old name
+        will continue to work for a period of time.
+
 
 .. attribute:: Message.dbname
 
@@ -130,7 +142,7 @@ Message Objects
     :data:`~cx_Oracle.SUBSCR_QOS_QUERY` when the subscription was created.
 
 
-.. attribute:: Message.queueName
+.. attribute:: Message.queue_name
 
     This read-only attribute returns the name of the queue which generated the
     notification. It will only be populated if the subscription was created
@@ -138,6 +150,12 @@ Message Objects
 
     .. versionadded:: 6.4
 
+    .. versionchanged:: 8.2
+
+        For consistency and compliance with the PEP 8 naming style, the
+        attribute `queueName` was renamed to `queue_name`. The old name will
+        continue to work for a period of time.
+
 
 .. attribute:: Message.registered
 
diff --git a/doc/src/api_manual/variable.rst b/doc/src/api_manual/variable.rst
index 3161f90..4d7e599 100644
--- a/doc/src/api_manual/variable.rst
+++ b/doc/src/api_manual/variable.rst
@@ -9,7 +9,7 @@ Variable Objects
     The DB API definition does not define this object.
 
 
-.. attribute:: Variable.actualElements
+.. attribute:: Variable.actual_elements
 
     This read-only attribute returns the actual number of elements in the
     variable. This corresponds to the number of elements in a PL/SQL index-by
@@ -17,11 +17,24 @@ Variable Objects
     :func:`Cursor.arrayvar()`. For all other variables this value will be
     identical to the attribute :attr:`~Variable.numElements`.
 
-.. attribute:: Variable.bufferSize
+    .. versionchanged:: 8.2
+
+        For consistency and compliance with the PEP 8 naming style, the
+        attribute `actualElements` was renamed to `actual_elements`. The old
+        name will continue to work for a period of time.
+
+
+.. attribute:: Variable.buffer_size
 
     This read-only attribute returns the size of the buffer allocated for each
     element in bytes.
 
+    .. versionchanged:: 8.2
+
+        For consistency and compliance with the PEP 8 naming style, the
+        attribute `bufferSize` was renamed to `buffer_size`. The old
+        name will continue to work for a period of time.
+
 
 .. method:: Variable.getvalue([pos=0])
 
@@ -41,12 +54,18 @@ Variable Objects
     attribute is None, the value is bound directly without any conversion.
 
 
-.. attribute:: Variable.numElements
+.. attribute:: Variable.num_elements
 
     This read-only attribute returns the number of elements allocated in an
     array, or the number of scalar items that can be fetched into the variable
     or bound to the variable.
 
+    .. versionchanged:: 8.2
+
+        For consistency and compliance with the PEP 8 naming style, the
+        attribute `numElements` was renamed to `num_elements`. The old
+        name will continue to work for a period of time.
+
 
 .. attribute:: Variable.outconverter
 
diff --git a/src/cxoLob.c b/src/cxoLob.c
index 885450f..c5eb937 100644
--- a/src/cxoLob.c
+++ b/src/cxoLob.c
@@ -236,14 +236,22 @@ static PyObject *cxoLob_write(cxoLob *lob, PyObject *args,
 static PyObject *cxoLob_trim(cxoLob *lob, PyObject *args,
         PyObject *keywordArgs)
 {
-    static char *keywordList[] = { "newSize", NULL };
-    unsigned PY_LONG_LONG newSize;
+    static char *keywordList[] = { "new_size", "newSize", NULL };
+    unsigned PY_LONG_LONG newSize, newSizeDeprecated;
     int status;
 
-    newSize = 0;
-    if (!PyArg_ParseTupleAndKeywords(args, keywordArgs, "|K", keywordList,
-            &newSize))
+    newSize = newSizeDeprecated = 0;
+    if (!PyArg_ParseTupleAndKeywords(args, keywordArgs, "|KK", keywordList,
+            &newSize, &newSizeDeprecated))
         return NULL;
+    if (newSizeDeprecated > 0) {
+        if (newSize > 0) {
+            cxoError_raiseFromString(cxoProgrammingErrorException,
+                    "new_size and newSize cannot both be specified");
+            return NULL;
+        }
+        newSize = newSizeDeprecated;
+    }
     Py_BEGIN_ALLOW_THREADS
     status = dpiLob_trim(lob->handle, (uint64_t) newSize);
     Py_END_ALLOW_THREADS
diff --git a/src/cxoSubscr.c b/src/cxoSubscr.c
index f022f9a..ed0b4a8 100644
--- a/src/cxoSubscr.c
+++ b/src/cxoSubscr.c
@@ -416,12 +416,14 @@ static PyMemberDef cxoSubscrTypeMembers[] = {
     { "namespace", T_UINT, offsetof(cxoSubscr, namespace), READONLY },
     { "name", T_OBJECT, offsetof(cxoSubscr, name), READONLY },
     { "protocol", T_UINT, offsetof(cxoSubscr, protocol), READONLY },
-    { "ipAddress", T_OBJECT, offsetof(cxoSubscr, ipAddress), READONLY },
+    { "ip_address", T_OBJECT, offsetof(cxoSubscr, ipAddress), READONLY },
     { "port", T_UINT, offsetof(cxoSubscr, port), READONLY },
     { "timeout", T_UINT, offsetof(cxoSubscr, timeout), READONLY },
     { "operations", T_UINT, offsetof(cxoSubscr, operations), READONLY },
     { "qos", T_UINT, offsetof(cxoSubscr, qos), READONLY },
     { "id", T_ULONG, offsetof(cxoSubscr, id), READONLY },
+    // deprecated
+    { "ipAddress", T_OBJECT, offsetof(cxoSubscr, ipAddress), READONLY },
     { NULL }
 };
 
@@ -433,9 +435,13 @@ static PyMemberDef cxoMessageTypeMembers[] = {
     { "txid", T_OBJECT, offsetof(cxoMessage, txId), READONLY },
     { "tables", T_OBJECT, offsetof(cxoMessage, tables), READONLY },
     { "queries", T_OBJECT, offsetof(cxoMessage, queries), READONLY },
+    { "queue_name", T_OBJECT, offsetof(cxoMessage, queueName), READONLY },
+    { "consumer_name", T_OBJECT, offsetof(cxoMessage, consumerName),
+            READONLY },
+    { "registered", T_BOOL, offsetof(cxoMessage, registered), READONLY },
+    // deprecated
     { "queueName", T_OBJECT, offsetof(cxoMessage, queueName), READONLY },
     { "consumerName", T_OBJECT, offsetof(cxoMessage, consumerName), READONLY },
-    { "registered", T_BOOL, offsetof(cxoMessage, registered), READONLY },
     { NULL }
 };
 
diff --git a/src/cxoVar.c b/src/cxoVar.c
index 7190497..9e910e7 100644
--- a/src/cxoVar.c
+++ b/src/cxoVar.c
@@ -722,10 +722,11 @@ static PyObject *cxoVar_repr(cxoVar *var)
 // declaration of members
 //-----------------------------------------------------------------------------
 static PyMemberDef cxoMembers[] = {
+    { "buffer_size", T_INT, offsetof(cxoVar, bufferSize), READONLY },
     { "bufferSize", T_INT, offsetof(cxoVar, bufferSize), READONLY },
     { "inconverter", T_OBJECT, offsetof(cxoVar, inConverter), 0 },
-    { "numElements", T_INT, offsetof(cxoVar, allocatedElements),
-            READONLY },
+    { "numElements", T_INT, offsetof(cxoVar, allocatedElements), READONLY },
+    { "num_elements", T_INT, offsetof(cxoVar, allocatedElements), READONLY },
     { "outconverter", T_OBJECT, offsetof(cxoVar, outConverter), 0 },
     { "size", T_INT, offsetof(cxoVar, size), READONLY },
     { NULL }
@@ -736,6 +737,7 @@ static PyMemberDef cxoMembers[] = {
 // declaration of calculated members
 //-----------------------------------------------------------------------------
 static PyGetSetDef cxoCalcMembers[] = {
+    { "actual_elements", (getter) cxoVar_externalGetActualElements, 0, 0, 0 },
     { "actualElements", (getter) cxoVar_externalGetActualElements, 0, 0, 0 },
     { "type", (getter) cxoVar_getType, 0, 0, 0 },
     { "values", (getter) cxoVar_externalGetValues, 0, 0, 0 },