diff --git a/include/util/tdef.h b/include/util/tdef.h
index e1d421a39930368a5f66744c0f9fbf7a07475831..d585912259bd59fab28cad35cda40b4ade0ef7e9 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -254,7 +254,7 @@ typedef enum ELogicConditionType {
 #define TSDB_EP_LEN             (TSDB_FQDN_LEN + 6)
 #define TSDB_IPv4ADDR_LEN       16
 #define TSDB_FILENAME_LEN       128
-#define TSDB_SHOW_SQL_LEN       1024
+#define TSDB_SHOW_SQL_LEN       2048
 #define TSDB_SLOW_QUERY_SQL_LEN 512
 #define TSDB_SHOW_SUBQUERY_LEN  1000