diff --git a/ZPsycopgDA/test_da.py b/ZPsycopgDA/test_da.py
new file mode 100644
index 00000000..83197671
--- /dev/null
+++ b/ZPsycopgDA/test_da.py
@@ -0,0 +1,42 @@
+# zopectl run script to test the DA/threading behavior
+#
+# Usage: bin/zopectl run test_da.py "dbname=xxx"
+#
+from Products.ZPsycopgDA.DA import ZDATETIME
+from Products.ZPsycopgDA.db import DB
+import sys
+import threading
+
+
+dsn = sys.argv[1]
+
+
+typecasts = [ZDATETIME]
+
+
+def DA_connect():
+    db = DB(dsn, tilevel=2, typecasts=typecasts)
+    db.open()
+    return db
+
+
+def assert_casts(conn, name):
+    connection = conn.getcursor().connection
+    if (connection.string_types ==
+            {1114: ZDATETIME, 1184: ZDATETIME}):
+        print '%s pass\n' % name
+    else:
+        print '%s fail (%s)\n' % (name, connection.string_types)
+
+
+def test_connect(name):
+    assert_casts(conn1, name)
+
+
+conn1 = DA_connect()
+t1 = threading.Thread(target=test_connect, args=('t1',))
+t1.start()
+t2 = threading.Thread(target=test_connect, args=('t2',))
+t2.start()
+t1.join()
+t2.join()