diff --git a/rhodecode/lib/dbmigrate/migrate/exceptions.py b/rhodecode/lib/dbmigrate/migrate/exceptions.py
new file mode 100644
--- /dev/null
+++ b/rhodecode/lib/dbmigrate/migrate/exceptions.py
@@ -0,0 +1,87 @@
+"""
+   Provide exception classes for :mod:`migrate`
+"""
+
+
+class Error(Exception):
+    """Error base class."""
+
+
+class ApiError(Error):
+    """Base class for API errors."""
+
+
+class KnownError(ApiError):
+    """A known error condition."""
+
+
+class UsageError(ApiError):
+    """A known error condition where help should be displayed."""
+
+
+class ControlledSchemaError(Error):
+    """Base class for controlled schema errors."""
+
+
+class InvalidVersionError(ControlledSchemaError):
+    """Invalid version number."""
+
+
+class DatabaseNotControlledError(ControlledSchemaError):
+    """Database should be under version control, but it's not."""
+
+
+class DatabaseAlreadyControlledError(ControlledSchemaError):
+    """Database shouldn't be under version control, but it is"""
+
+
+class WrongRepositoryError(ControlledSchemaError):
+    """This database is under version control by another repository."""
+
+
+class NoSuchTableError(ControlledSchemaError):
+    """The table does not exist."""
+
+
+class PathError(Error):
+    """Base class for path errors."""
+
+
+class PathNotFoundError(PathError):
+    """A path with no file was required; found a file."""
+
+
+class PathFoundError(PathError):
+    """A path with a file was required; found no file."""
+
+
+class RepositoryError(Error):
+    """Base class for repository errors."""
+
+
+class InvalidRepositoryError(RepositoryError):
+    """Invalid repository error."""
+
+
+class ScriptError(Error):
+    """Base class for script errors."""
+
+
+class InvalidScriptError(ScriptError):
+    """Invalid script error."""
+
+
+class InvalidVersionError(Error):
+    """Invalid version error."""
+
+# migrate.changeset
+
+class NotSupportedError(Error):
+    """Not supported error"""
+
+
+class InvalidConstraintError(Error):
+    """Invalid constraint error"""
+
+class MigrateDeprecationWarning(DeprecationWarning):
+    """Warning for deprecated features in Migrate"""