diff --git a/src/hm/HookLog.cc b/src/hm/HookLog.cc
index 280e0e563e..ee257e1dcf 100644
--- a/src/hm/HookLog.cc
+++ b/src/hm/HookLog.cc
@@ -66,11 +66,7 @@ int HookLog::_dump_log(int hkid, int exec_id, std::string &xml_log)
 
     cmd << "SELECT body FROM "<< table;
 
-    if ( hkid == -1 )
-    {
-        cmd << " ORDER BY hkid DESC";
-    }
-    else
+    if ( hkid != -1 )
     {
         cmd << " WHERE hkid = " << hkid;
     }
@@ -80,6 +76,8 @@ int HookLog::_dump_log(int hkid, int exec_id, std::string &xml_log)
         cmd << " AND exeid = " << exec_id;
     }
 
+    cmd << " ORDER BY hkid DESC, exeid";
+
     xml_log.append("<HOOKLOG>");
 
     cb.set_callback(&xml_log);
diff --git a/src/pool/PoolSQL.cc b/src/pool/PoolSQL.cc
index 80321e14be..317079970a 100644
--- a/src/pool/PoolSQL.cc
+++ b/src/pool/PoolSQL.cc
@@ -228,20 +228,31 @@ PoolObjectSQL * PoolSQL::get_ro(int oid)
 void PoolSQL::exist(const string& id_str, std::set<int>& id_list)
 {
     std::vector<int> existing_items;
-    std::set<int>::iterator iterator;
 
     one_util::split_unique(id_str, ',', id_list);
-    search(existing_items, table.c_str(), "1 order by 1 ASC");
+    if (Nebula::instance().get_db_backend() == "postgresql")
+    {
+        search(existing_items, table.c_str(), "true order by 1 ASC");
+    }
+    else
+    {
+        search(existing_items, table.c_str(), "1 order by 1 ASC");
+    }
 
-    for (iterator = id_list.begin(); iterator != id_list.end(); ++iterator)
+    for (auto iterator = id_list.begin(); iterator != id_list.end();)
     {
         if (!std::binary_search(existing_items.begin(), existing_items.end(), *iterator))
         {
-            id_list.erase(iterator);
+            iterator = id_list.erase(iterator);
+        }
+        else
+        {
+            ++iterator;
         }
     }
 }
 
+
 /* -------------------------------------------------------------------------- */
 /* -------------------------------------------------------------------------- */