diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 2d5edcb01b..78ecd55c64 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -7254,6 +7254,7 @@ static int32_t buildCmdMsg(STranslateContext* pCxt, int16_t msgType, FSerializeF
   pCxt->pCmdMsg->msgLen = func(NULL, 0, pReq);
   pCxt->pCmdMsg->pMsg = taosMemoryMalloc(pCxt->pCmdMsg->msgLen);
   if (NULL == pCxt->pCmdMsg->pMsg) {
+    taosMemoryFreeClear(pCxt->pCmdMsg);
     return TSDB_CODE_OUT_OF_MEMORY;
   }
   func(pCxt->pCmdMsg->pMsg, pCxt->pCmdMsg->msgLen, pReq);
diff --git a/tests/script/tsim/show/basic.sim b/tests/script/tsim/show/basic.sim
index 8990e492fa..4b2e33b45e 100644
--- a/tests/script/tsim/show/basic.sim
+++ b/tests/script/tsim/show/basic.sim
@@ -230,7 +230,7 @@ endi
 sql_error show create stable t0;
 
 sql show variables;
-if $rows != 4 then
+if $rows != 9 then
   return -1
 endi
 
diff --git a/tests/script/tsim/valgrind/checkError1.sim b/tests/script/tsim/valgrind/checkError1.sim
index debe633f06..5629fbb4bd 100644
--- a/tests/script/tsim/valgrind/checkError1.sim
+++ b/tests/script/tsim/valgrind/checkError1.sim
@@ -120,7 +120,7 @@ if $rows != 3 then
 endi
 
 sql show variables;
-if $rows != 4 then
+if $rows != 9 then
   return -1
 endi
 
diff --git a/tests/system-test/2-query/db.py b/tests/system-test/2-query/db.py
index cfe224acb0..e2c056cd5b 100644
--- a/tests/system-test/2-query/db.py
+++ b/tests/system-test/2-query/db.py
@@ -45,7 +45,7 @@ class TDTestCase:
     
     def case2(self):
         tdSql.query("show variables")        
-        tdSql.checkRows(4)
+        tdSql.checkRows(9)
 
         for i in range(self.replicaVar):
             tdSql.query("show dnode %d variables like 'debugFlag'" % (i + 1))