diff --git a/Service%EF%BC%9ACoder.md b/Service%EF%BC%9ACoder.md
index d2eee42..7418bce 100644
--- a/Service%EF%BC%9ACoder.md
+++ b/Service%EF%BC%9ACoder.md
@@ -13,5 +13,32 @@ echo 'export CODER_HTTP_ADDRESS=0.0.0.0:3000' >> ~/.bashrc && source ~/.bashrc
 # 啟動 Coder 服務
 
 ```bash
-systemctl enable --now coder@coder
+systemctl enable --now coder
+```
+
+# 使用 
+
+```bash
+sudo -u postgres psql
+```
+
+新建使用者與資料庫
+
+```sql
+CREATE USER coder WITH PASSWORD 'coder';
+
+CREATE DATABASE coder;
+```
+
+設定資料庫權限
+
+```sql
+-- 1. Give ownership of the database to the app user
+ALTER DATABASE coder OWNER TO coder;
+
+-- 2. Give ownership of the public schema to the app user
+ALTER SCHEMA public OWNER TO coder;
+
+-- 3. Ensure the user has create permissions (Crucial for Postgres 15+)
+GRANT USAGE, CREATE ON SCHEMA public TO coder;
 ```
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