diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index 3f623059bdd9ead636355b0cd0d69d44efa7f932..08b8c4d74f4f6e7d4ba649d5077bd9f64bf3cf49 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -84,6 +84,8 @@ int32_t tscInitRpc(const char *user, const char *secretEncrypt, void **pDnodeCon
 void taos_init_imp(void) {
   char temp[128]  = {0};
   
+  tdminit();
+
   errno = TSDB_CODE_SUCCESS;
   srand(taosGetTimestampSec());
   deltaToUtcInitOnce();
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 85401f826e223381e813bf3cf3ba75306303a803..fb64d0bc5028cf1a4d26d3133cbf15e7542c504b 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -503,6 +503,8 @@ void tscFreeSqlObj(SSqlObj* pSql) {
   pCmd->allocSize = 0;
   
   tsem_destroy(&pSql->rspSem);
+
+  memset(pSql, 0, sizeof(*pSql));
   TDMFREE(pSql);
 }