diff --git a/doc/src/public_functions/dpiConn.rst b/doc/src/public_functions/dpiConn.rst
index ef57a51b..96868f9e 100644
--- a/doc/src/public_functions/dpiConn.rst
+++ b/doc/src/public_functions/dpiConn.rst
@@ -518,7 +518,7 @@ handles.
 
 .. function:: int dpiConn_newSubscription(dpiConn \*conn, \
         dpiSubscrCreateParams \*params, dpiSubscr \**subscr, \
-        uint32_t \*subscrId)
+        uint64_t \*subscrId)
 
     Returns a reference to a subscription which is used for requesting
     notifications of changes on tables or queries that are made in the
@@ -539,7 +539,8 @@ handles.
     created by this function.
 
     **subscrId** [OUT] -- a pointer to the id of the subscription that is
-    created by this function.
+    created by this function, or NULL. This parameter is deprecated and will be
+    removed in version 2.1.
 
 
 .. function:: int dpiConn_newTempLob(dpiConn \*conn, \
diff --git a/include/dpi.h b/include/dpi.h
index 32651c31..5a7355ea 100644
--- a/include/dpi.h
+++ b/include/dpi.h
@@ -759,7 +759,7 @@ int dpiConn_newMsgProps(dpiConn *conn, dpiMsgProps **props);
 
 // create a new subscription for events
 int dpiConn_newSubscription(dpiConn *conn, dpiSubscrCreateParams *params,
-        dpiSubscr **subscr, uint32_t *subscrId);
+        dpiSubscr **subscr, uint64_t *subscrId);
 
 // create a new temporary LOB
 int dpiConn_newTempLob(dpiConn *conn, dpiOracleTypeNum lobType, dpiLob **lob);
diff --git a/samples/TestCQN.c b/samples/TestCQN.c
index d3d2294c..49cc89a1 100644
--- a/samples/TestCQN.c
+++ b/samples/TestCQN.c
@@ -76,9 +76,9 @@ void TestCallback(void *context, dpiSubscrMessage *message)
 //-----------------------------------------------------------------------------
 int main(int argc, char **argv)
 {
-    uint32_t subscrId, numQueryColumns, i;
     dpiCommonCreateParams commonParams;
     dpiSubscrCreateParams createParams;
+    uint32_t numQueryColumns, i;
     dpiSampleParams *params;
     dpiSubscr *subscr;
     uint64_t queryId;
@@ -98,7 +98,7 @@ int main(int argc, char **argv)
         return dpiSamples_showError();
     createParams.qos = DPI_SUBSCR_QOS_QUERY | DPI_SUBSCR_QOS_ROWIDS;
     createParams.callback = TestCallback;
-    if (dpiConn_newSubscription(conn, &createParams, &subscr, &subscrId) < 0)
+    if (dpiConn_newSubscription(conn, &createParams, &subscr, NULL) < 0)
         return dpiSamples_showError();
 
     // register query
diff --git a/src/dpiConn.c b/src/dpiConn.c
index 4c0bbd93..c3b16f4a 100644
--- a/src/dpiConn.c
+++ b/src/dpiConn.c
@@ -1397,7 +1397,7 @@ int dpiConn_newMsgProps(dpiConn *conn, dpiMsgProps **props)
 //   Create a new subscription and return it.
 //-----------------------------------------------------------------------------
 int dpiConn_newSubscription(dpiConn *conn, dpiSubscrCreateParams *params,
-        dpiSubscr **subscr, uint32_t *subscrId)
+        dpiSubscr **subscr, uint64_t *subscrId)
 {
     dpiSubscr *tempSubscr;
     dpiError error;
@@ -1406,7 +1406,6 @@ int dpiConn_newSubscription(dpiConn *conn, dpiSubscrCreateParams *params,
         return DPI_FAILURE;
     DPI_CHECK_PTR_NOT_NULL(params)
     DPI_CHECK_PTR_NOT_NULL(subscr)
-    DPI_CHECK_PTR_NOT_NULL(subscrId)
     if (dpiGen__allocate(DPI_HTYPE_SUBSCR, conn->env, (void**) &tempSubscr,
             &error) < 0)
         return DPI_FAILURE;
diff --git a/src/dpiImpl.h b/src/dpiImpl.h
index ceef86dd..79acd7ab 100644
--- a/src/dpiImpl.h
+++ b/src/dpiImpl.h
@@ -960,7 +960,7 @@ void dpiRowid__free(dpiRowid *rowid, dpiError *error);
 //-----------------------------------------------------------------------------
 void dpiSubscr__free(dpiSubscr *subscr, dpiError *error);
 int dpiSubscr__create(dpiSubscr *subscr, dpiConn *conn,
-        dpiSubscrCreateParams *params, uint32_t *subscrId, dpiError *error);
+        dpiSubscrCreateParams *params, uint64_t *subscrId, dpiError *error);
 
 
 //-----------------------------------------------------------------------------
diff --git a/src/dpiSubscr.c b/src/dpiSubscr.c
index e35c29d5..844cfb6d 100644
--- a/src/dpiSubscr.c
+++ b/src/dpiSubscr.c
@@ -64,7 +64,7 @@ static void dpiSubscr__callback(dpiSubscr *subscr, void *handle, void *payload,
 // is returned.
 //-----------------------------------------------------------------------------
 int dpiSubscr__create(dpiSubscr *subscr, dpiConn *conn,
-        dpiSubscrCreateParams *params, uint32_t *subscrId, dpiError *error)
+        dpiSubscrCreateParams *params, uint64_t *subscrId, dpiError *error)
 {
     uint32_t qosFlags;
     int rowids;
@@ -166,10 +166,13 @@ int dpiSubscr__create(dpiSubscr *subscr, dpiConn *conn,
     if (dpiOci__subscriptionRegister(conn, &subscr->handle, error) < 0)
         return DPI_FAILURE;
 
-    // get the registration id
-    return dpiOci__attrGet(subscr->handle, DPI_OCI_HTYPE_SUBSCRIPTION,
+    // get the registration id, if applicable
+    if (subscrId && dpiOci__attrGet(subscr->handle, DPI_OCI_HTYPE_SUBSCRIPTION,
             subscrId, NULL, DPI_OCI_ATTR_SUBSCR_CQ_REGID,
-            "get reigstration id", error);
+            "get registration id", error) < 0)
+        return DPI_FAILURE;
+
+    return DPI_SUCCESS;
 }
 
 
diff --git a/test/TestConn.c b/test/TestConn.c
index d8b27cee..dfa6645e 100644
--- a/test/TestConn.c
+++ b/test/TestConn.c
@@ -35,7 +35,6 @@ int dpiTest__callFunctionsWithError(dpiTestCase *testCase,
     dpiEncodingInfo info;
     dpiMsgProps *props;
     dpiSubscr *subscr;
-    uint32_t subscrId;
     int commitNeeded;
     dpiData *data;
     dpiStmt *stmt;
@@ -122,7 +121,7 @@ int dpiTest__callFunctionsWithError(dpiTestCase *testCase,
     if (dpiTestCase_expectError(testCase, expectedError) < 0)
         return DPI_FAILURE;
 
-    dpiConn_newSubscription(conn, &subscrParams, &subscr, &subscrId);
+    dpiConn_newSubscription(conn, &subscrParams, &subscr, NULL);
     if (dpiTestCase_expectError(testCase, expectedError) < 0)
         return DPI_FAILURE;
 
diff --git a/test/TestSubscriptions.c b/test/TestSubscriptions.c
index c7eda6a1..d9355a35 100644
--- a/test/TestSubscriptions.c
+++ b/test/TestSubscriptions.c
@@ -30,7 +30,6 @@ int dpiTest_2200_verifyNewSubscriptionWithCallBkNULL(dpiTestCase *testCase,
     dpiSubscrCreateParams subParams;
     dpiContext *context;
     dpiSubscr *subscr;
-    uint32_t subscrId;
     dpiConn *conn;
 
     dpiTestSuite_getContext(&context);
@@ -46,7 +45,7 @@ int dpiTest_2200_verifyNewSubscriptionWithCallBkNULL(dpiTestCase *testCase,
         return dpiTestCase_setFailedFromError(testCase);
     subParams.callback = NULL;
     subParams.protocol = DPI_SUBSCR_PROTO_CALLBACK;
-    dpiConn_newSubscription(conn, &subParams, &subscr, &subscrId);
+    dpiConn_newSubscription(conn, &subParams, &subscr, NULL);
     if (dpiTestCase_expectError(testCase, expectedError) < 0)
         return DPI_FAILURE;
     dpiConn_release(conn);