diff --git a/frontend/src/components/QueryEditor.external-sql-save.test.tsx b/frontend/src/components/QueryEditor.external-sql-save.test.tsx
index 7fd745b2..23f8a43a 100644
--- a/frontend/src/components/QueryEditor.external-sql-save.test.tsx
+++ b/frontend/src/components/QueryEditor.external-sql-save.test.tsx
@@ -4590,6 +4590,40 @@ describe('QueryEditor external SQL save', () => {
     );
   });
 
+  it('preserves postgres JSONB question-mark operators while formatting', async () => {
+    let renderer!: ReactTestRenderer;
+    storeState.connections[0].config.type = 'postgres';
+    storeState.connections[0].config.database = 'main';
+    const pgSql = "select * from items where data ?| array['a','b'] and data ?& array['c']";
+
+    await act(async () => {
+      renderer = create(<QueryEditor tab={createTab({ query: pgSql, dbName: 'main' })} />);
+    });
+
+    const formatButton = findButton(renderer, '美化');
+    await act(async () => {
+      await formatButton.props.onClick();
+    });
+
+    expect(messageApi.error).not.toHaveBeenCalled();
+    expect(editorState.editor.executeEdits).toHaveBeenCalledWith(
+      'gonavi-format-sql',
+      expect.arrayContaining([
+        expect.objectContaining({
+          text: expect.stringContaining("data ?| ARRAY['a', 'b']"),
+        }),
+      ]),
+    );
+    expect(editorState.editor.executeEdits).toHaveBeenCalledWith(
+      'gonavi-format-sql',
+      expect.arrayContaining([
+        expect.objectContaining({
+          text: expect.stringContaining("data ?& ARRAY['c']"),
+        }),
+      ]),
+    );
+  });
+
   it('formats postgres window-function SQL with cast syntax through Monaco edits', async () => {
     let renderer!: ReactTestRenderer;
     storeState.connections[0].config.type = 'postgres';
diff --git a/frontend/src/components/QueryEditor.tsx b/frontend/src/components/QueryEditor.tsx
index d7806573..305cf6ea 100644
--- a/frontend/src/components/QueryEditor.tsx
+++ b/frontend/src/components/QueryEditor.tsx
@@ -222,7 +222,6 @@ const QUERY_EDITOR_AI_INLINE_DEBOUNCE_MS = 220;
 const QUERY_EDITOR_AI_INLINE_CONTEXT_KEY = 'gonaviAiInlineSuggestionVisible';
 const QUERY_EDITOR_IME_FALLBACK_DELAY_MS = 80;
 const QUERY_EDITOR_FORMAT_PARAM_TYPES = {
-    positional: true,
     custom: [
         { regex: String.raw`#\{[^{}]+\}` },
         { regex: String.raw`\$\{[^{}]+\}` },
@@ -6192,7 +6191,10 @@ const QueryEditor: React.FC<{ tab: TabData; isActive?: boolean }> = ({ tab, isAc
           const formatted = format(sourceSql, {
               language: formatterLanguage,
               keywordCase: sqlFormatOptions.keywordCase,
-              paramTypes: QUERY_EDITOR_FORMAT_PARAM_TYPES,
+              paramTypes: {
+                  ...QUERY_EDITOR_FORMAT_PARAM_TYPES,
+                  ...(isOceanBaseOracleConnection(conn?.config) ? { positional: true } : {}),
+              },
           });
           if (sourceSql === formatted) {
               return;