diff --git a/docs/en/07-develop/07-tmq.mdx b/docs/en/07-develop/07-tmq.mdx
index 7465cc0a12ecc9c92a48a2308fe101d057f80492..739eabd1cf7e0168251e134daf101a9288333efe 100644
--- a/docs/en/07-develop/07-tmq.mdx
+++ b/docs/en/07-develop/07-tmq.mdx
@@ -222,7 +222,7 @@ A database including one supertable and two subtables is created as follows:
 
 ```sql
 DROP DATABASE IF EXISTS tmqdb;
-CREATE DATABASE tmqdb;
+CREATE DATABASE tmqdb WAL_RETENTION_PERIOD 3600;
 CREATE TABLE tmqdb.stb (ts TIMESTAMP, c1 INT, c2 FLOAT, c3 VARCHAR(16)) TAGS(t1 INT, t3 VARCHAR(16));
 CREATE TABLE tmqdb.ctb0 USING tmqdb.stb TAGS(0, "subtable0");
 CREATE TABLE tmqdb.ctb1 USING tmqdb.stb TAGS(1, "subtable1");       
diff --git a/docs/zh/07-develop/07-tmq.mdx b/docs/zh/07-develop/07-tmq.mdx
index 036c9aa86e5c91903a74bffd1f9c59a13a97c116..a3833438a2100a5d960cff1e5e6e194ba000004d 100644
--- a/docs/zh/07-develop/07-tmq.mdx
+++ b/docs/zh/07-develop/07-tmq.mdx
@@ -221,7 +221,7 @@ void Close()
 
 ```sql
 DROP DATABASE IF EXISTS tmqdb;
-CREATE DATABASE tmqdb;
+CREATE DATABASE tmqdb WAL_RETENTION_PERIOD 3600;
 CREATE TABLE tmqdb.stb (ts TIMESTAMP, c1 INT, c2 FLOAT, c3 VARCHAR(16)) TAGS(t1 INT, t3 VARCHAR(16));
 CREATE TABLE tmqdb.ctb0 USING tmqdb.stb TAGS(0, "subtable0");
 CREATE TABLE tmqdb.ctb1 USING tmqdb.stb TAGS(1, "subtable1");