diff --git a/doc/whats_new/v1.2.rst b/doc/whats_new/v1.2.rst
index 5ddc24e0500ad..b9d482277cd8b 100644
--- a/doc/whats_new/v1.2.rst
+++ b/doc/whats_new/v1.2.rst
@@ -280,6 +280,12 @@ Changelog
   in :class:`linear_model.LogisticRegression`, and will be removed in version 1.4.
   Use `None` instead. :pr:`23877` by :user:`Zhehao Liu <MaxwellLZH>`.
 
+- |Fix| :class:`linear_model.SGDOneClassSVM` no longer performs parameter
+  validation in the constructor. All validation is now handled in `fit()` and
+  `partial_fit()`.
+  :pr:`24433` by :user:`Yogendrasingh <iofall>`, :user:`Arisa Y. <arisayosh>`
+  and :user:`Tim Head <betatim>`.
+
 :mod:`sklearn.manifold`
 .......................
 
diff --git a/sklearn/linear_model/_stochastic_gradient.py b/sklearn/linear_model/_stochastic_gradient.py
index 5d7f74bf75d98..c752977ed0195 100644
--- a/sklearn/linear_model/_stochastic_gradient.py
+++ b/sklearn/linear_model/_stochastic_gradient.py
@@ -2160,13 +2160,10 @@ def __init__(
         warm_start=False,
         average=False,
     ):
-
-        alpha = nu / 2
         self.nu = nu
         super(SGDOneClassSVM, self).__init__(
             loss="hinge",
             penalty="l2",
-            alpha=alpha,
             C=1.0,
             l1_ratio=0,
             fit_intercept=fit_intercept,
diff --git a/sklearn/tests/test_common.py b/sklearn/tests/test_common.py
index c9e8d8b813a8e..c8e0035b726a7 100644
--- a/sklearn/tests/test_common.py
+++ b/sklearn/tests/test_common.py
@@ -431,15 +431,9 @@ def test_transformers_get_feature_names_out(transformer):
         )
 
 
-VALIDATE_ESTIMATOR_INIT = [
-    "SGDOneClassSVM",
-]
-VALIDATE_ESTIMATOR_INIT = set(VALIDATE_ESTIMATOR_INIT)
-
-
 @pytest.mark.parametrize(
     "Estimator",
-    [est for name, est in all_estimators() if name not in VALIDATE_ESTIMATOR_INIT],
+    [est for name, est in all_estimators()],
 )
 def test_estimators_do_not_raise_errors_in_init_or_set_params(Estimator):
     """Check that init or set_param does not raise errors."""