diff --git a/roles/db/files/conf/z90-vn.cnf b/roles/db/files/conf/z90-vn.cnf
index 1911135..c7db964 100644
--- a/roles/db/files/conf/z90-vn.cnf
+++ b/roles/db/files/conf/z90-vn.cnf
@@ -30,7 +30,7 @@ interactive_timeout                         = 1800
 wait_timeout                                = 1800
 open_files_limit                            = 20000
 low_priority_updates                        = 1
-table_open_cache                            = 40000
+table_open_cache                            = 50000
 table_definition_cache                      = 10000
 table_open_cache_instances                  = 1
 key_buffer_size                             = 256K