diff --git a/apps/blockchain-node/src/aitbc_chain/database.py b/apps/blockchain-node/src/aitbc_chain/database.py
index dc93524a..c3226adf 100755
--- a/apps/blockchain-node/src/aitbc_chain/database.py
+++ b/apps/blockchain-node/src/aitbc_chain/database.py
@@ -24,7 +24,8 @@ _engine = create_engine(f"sqlite:///{settings.db_path}", echo=False)
 @event.listens_for(_engine, "connect")
 def set_sqlite_pragma(dbapi_connection, connection_record):
     cursor = dbapi_connection.cursor()
-    cursor.execute("PRAGMA journal_mode=WAL")
+    # WAL mode disabled due to disk I/O errors (CoW already disabled on data directory)
+    # cursor.execute("PRAGMA journal_mode=WAL")
     cursor.execute("PRAGMA synchronous=NORMAL")
     cursor.execute("PRAGMA cache_size=-64000")
     cursor.execute("PRAGMA temp_store=MEMORY")