diff --git a/src/gausskernel/process/tcop/postgres.cpp b/src/gausskernel/process/tcop/postgres.cpp
index 568a1c2c4..dad265474 100644
--- a/src/gausskernel/process/tcop/postgres.cpp
+++ b/src/gausskernel/process/tcop/postgres.cpp
@@ -6764,8 +6764,6 @@ void RemoveTempNamespace()
         {
             StringInfoData str;
             initStringInfo(&str);
-            StringInfoData str_temp_table;
-            initStringInfo(&str_temp_table);
 
             if (u_sess->catalog_cxt.myTempNamespace) {
                 ResourceOwner currentOwner = t_thrd.utils_cxt.CurrentResourceOwner;
@@ -6785,13 +6783,11 @@ void RemoveTempNamespace()
                 if (nspname != NULL) {
                     ereport(LOG, (errmsg("Session quiting, drop temp schema %s", nspname)));
                     appendStringInfo(&str, "DROP SCHEMA %s, pg_toast_temp_%s CASCADE", nspname, &nspname[8]);
-                    appendStringInfo(&str_temp_table, "DELETE FROM gs_encrypted_columns WHERE rel_id in ( select pg_class.oid from pg_class join pg_namespace ON (pg_class.relnamespace = pg_namespace.oid ) where pg_namespace.nspname = \'%s\')", nspname);
 
                     pgstatCountSQL4SessionLevel();
 
                     t_thrd.postgres_cxt.whereToSendOutput = DestNone;
                     exec_simple_query(str.data, QUERY_MESSAGE);
-                    exec_simple_query(str_temp_table.data, QUERY_MESSAGE);
                     u_sess->catalog_cxt.myTempNamespace = InvalidOid;
                     u_sess->catalog_cxt.myTempToastNamespace = InvalidOid;
                 }