diff --git a/CHANGELOG.md b/CHANGELOG.md
index 222c7f81bc..a39f7b8f96 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-cloud-spanner/#history
 
+## [3.22.0](https://github.com/googleapis/python-spanner/compare/v3.21.0...v3.22.0) (2022-09-26)
+
+
+### Features
+
+* Adding reason, domain, metadata & error_details fields in Custom Exceptions for additional info ([#804](https://github.com/googleapis/python-spanner/issues/804)) ([2a74060](https://github.com/googleapis/python-spanner/commit/2a740607a00cb622ac9ce4005c12afd52114b4a5))
+
 ## [3.21.0](https://github.com/googleapis/python-spanner/compare/v3.20.0...v3.21.0) (2022-09-16)
 
 
diff --git a/google/cloud/spanner_dbapi/cursor.py b/google/cloud/spanner_dbapi/cursor.py
index 0fc36a72a9..4ffeac1a70 100644
--- a/google/cloud/spanner_dbapi/cursor.py
+++ b/google/cloud/spanner_dbapi/cursor.py
@@ -281,11 +281,11 @@ def execute(self, sql, args=None):
                     self._do_execute_update, sql, args or None
                 )
         except (AlreadyExists, FailedPrecondition, OutOfRange) as e:
-            raise IntegrityError(getattr(e, "details", e))
+            raise IntegrityError(getattr(e, "details", e)) from e
         except InvalidArgument as e:
-            raise ProgrammingError(getattr(e, "details", e))
+            raise ProgrammingError(getattr(e, "details", e)) from e
         except InternalServerError as e:
-            raise OperationalError(getattr(e, "details", e))
+            raise OperationalError(getattr(e, "details", e)) from e
 
     @check_not_closed
     def executemany(self, operation, seq_of_params):
diff --git a/google/cloud/spanner_dbapi/exceptions.py b/google/cloud/spanner_dbapi/exceptions.py
index f5f85a752a..723ee34fd2 100644
--- a/google/cloud/spanner_dbapi/exceptions.py
+++ b/google/cloud/spanner_dbapi/exceptions.py
@@ -14,6 +14,8 @@
 
 """Spanner DB API exceptions."""
 
+from google.api_core.exceptions import GoogleAPICallError
+
 
 class Warning(Exception):
     """Important DB API warning."""
@@ -27,7 +29,65 @@ class Error(Exception):
     Does not include :class:`Warning`.
     """
 
-    pass
+    def _is_error_cause_instance_of_google_api_exception(self):
+        return isinstance(self.__cause__, GoogleAPICallError)
+
+    @property
+    def reason(self):
+        """The reason of the error.
+        Reference:
+            https://cloud.google.com/apis/design/errors#error_info
+        Returns:
+            Union[str, None]: An optional string containing reason of the error.
+        """
+        return (
+            self.__cause__.reason
+            if self._is_error_cause_instance_of_google_api_exception()
+            else None
+        )
+
+    @property
+    def domain(self):
+        """The logical grouping to which the "reason" belongs.
+        Reference:
+            https://cloud.google.com/apis/design/errors#error_info
+        Returns:
+            Union[str, None]: An optional string containing a logical grouping to which the "reason" belongs.
+        """
+        return (
+            self.__cause__.domain
+            if self._is_error_cause_instance_of_google_api_exception()
+            else None
+        )
+
+    @property
+    def metadata(self):
+        """Additional structured details about this error.
+        Reference:
+            https://cloud.google.com/apis/design/errors#error_info
+        Returns:
+            Union[Dict[str, str], None]: An optional object containing structured details about the error.
+        """
+        return (
+            self.__cause__.metadata
+            if self._is_error_cause_instance_of_google_api_exception()
+            else None
+        )
+
+    @property
+    def details(self):
+        """Information contained in google.rpc.status.details.
+        Reference:
+            https://cloud.google.com/apis/design/errors#error_model
+            https://cloud.google.com/apis/design/errors#error_details
+        Returns:
+            Sequence[Any]: A list of structured objects from error_details.proto
+        """
+        return (
+            self.__cause__.details
+            if self._is_error_cause_instance_of_google_api_exception()
+            else None
+        )
 
 
 class InterfaceError(Error):
diff --git a/samples/samples/requirements.txt b/samples/samples/requirements.txt
index e75fc9fdc5..8f9b8ad280 100644
--- a/samples/samples/requirements.txt
+++ b/samples/samples/requirements.txt
@@ -1,2 +1,2 @@
-google-cloud-spanner==3.20.0
+google-cloud-spanner==3.21.0
 futures==3.3.0; python_version < "3"
diff --git a/setup.py b/setup.py
index 048d1ec80a..faf8a4685c 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 name = "google-cloud-spanner"
 description = "Cloud Spanner API client library"
-version = "3.21.0"
+version = "3.22.0"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'