diff --git a/django/db/backends/oracle/base.py b/django/db/backends/oracle/base.py
index 46022a97b1..9b08bc097a 100644
--- a/django/db/backends/oracle/base.py
+++ b/django/db/backends/oracle/base.py
@@ -91,6 +91,7 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     has_bulk_insert = True
     supports_tablespaces = True
     supports_sequence_reset = False
+    supports_combined_alters = False
 
 
 class DatabaseOperations(BaseDatabaseOperations):
diff --git a/django/db/backends/oracle/creation.py b/django/db/backends/oracle/creation.py
index f7d43ae7b6..b1a8782aa9 100644
--- a/django/db/backends/oracle/creation.py
+++ b/django/db/backends/oracle/creation.py
@@ -49,8 +49,8 @@ class DatabaseCreation(BaseDatabaseCreation):
     data_type_check_constraints = {
         'BooleanField': '%(qn_column)s IN (0,1)',
         'NullBooleanField': '(%(qn_column)s IN (0,1)) OR (%(qn_column)s IS NULL)',
-        'PositiveIntegerField': '"%(qn_column)s" >= 0',
-        'PositiveSmallIntegerField': '"%(qn_column)s" >= 0',
+        'PositiveIntegerField': '%(qn_column)s >= 0',
+        'PositiveSmallIntegerField': '%(qn_column)s >= 0',
     }
 
     def __init__(self, connection):
diff --git a/django/db/backends/oracle/schema.py b/django/db/backends/oracle/schema.py
index b86e0857bb..4a679e79eb 100644
--- a/django/db/backends/oracle/schema.py
+++ b/django/db/backends/oracle/schema.py
@@ -2,4 +2,13 @@ from django.db.backends.schema import BaseDatabaseSchemaEditor
 
 
 class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
-    pass
+    
+    sql_create_column = "ALTER TABLE %(table)s ADD %(column)s %(definition)s"
+    sql_alter_column_type = "MODIFY %(column)s %(type)s"
+    sql_alter_column_null = "MODIFY %(column)s NULL"
+    sql_alter_column_not_null = "MODIFY %(column)s NOT NULL"
+    sql_alter_column_default = "MODIFY %(column)s DEFAULT %(default)s"
+    sql_alter_column_no_default = "MODIFY %(column)s DEFAULT NULL"
+    sql_delete_column = "ALTER TABLE %(table)s DROP COLUMN %(column)s"
+    sql_delete_table = "DROP TABLE %(table)s CASCADE CONSTRAINTS"
+