diff --git a/collector/db.py b/collector/db.py
index 6bee655..3d8a638 100644
--- a/collector/db.py
+++ b/collector/db.py
@@ -17,7 +17,10 @@ def connect() -> sqlite3.Connection:
     Path(path).parent.mkdir(parents=True, exist_ok=True)
     conn = sqlite3.connect(path)
     conn.row_factory = sqlite3.Row
-    conn.execute("PRAGMA journal_mode=WAL;")
+    # Bewusst KEIN WAL: Der web-Container liest die DB read-only aus einem
+    # anderen Prozess. Eine readonly-Verbindung kann eine WAL-Datenbank ohne
+    # aktiven Writer/-shm nicht öffnen ("attempt to write a readonly database").
+    # Rollback-Journal (Default) lässt readonly-Reads jederzeit zu.
     return conn
 
 
diff --git a/collector/schema.sql b/collector/schema.sql
index 2317356..c0fa291 100644
--- a/collector/schema.sql
+++ b/collector/schema.sql
@@ -1,5 +1,3 @@
-PRAGMA journal_mode=WAL;
-
 CREATE TABLE IF NOT EXISTS charges (
   id          INTEGER PRIMARY KEY AUTOINCREMENT,
   start_time  TEXT NOT NULL,      -- ISO 8601, lokale Zeit (Europe/Berlin)
diff --git a/web/lib/db.ts b/web/lib/db.ts
index ddb079a..47abf0d 100644
--- a/web/lib/db.ts
+++ b/web/lib/db.ts
@@ -32,7 +32,9 @@ export interface Totals {
 function withDb<T>(fallback: T, fn: (conn: Database.Database) => T): T {
   let conn: Database.Database | null = null;
   try {
-    conn = new Database(DB_PATH, { readonly: true, fileMustExist: true });
+    // timeout: wartet kurz, falls der collector gerade schreibt (statt
+    // sofort mit SQLITE_BUSY zu scheitern).
+    conn = new Database(DB_PATH, { readonly: true, fileMustExist: true, timeout: 5000 });
     const hasTable = conn
       .prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='charges'")
       .get();