优化表后出现了is marked as crashed and last (automatic?) repair failed解决办法 _PHP

优化表后出现了is marked as crashed and last (automatic?) repair failed
今天想优化一下表，优化之后出现了如下问题：

SQL code


mysql> OPTIMIZE TABLE jo_mailqueue;
+---------------------+----------+----------+-------------------------------------------------------------+
| Table               | Op       | Msg_type | Msg_text                                                                                        |
+---------------------+----------+----------+-------------------------------------------------------------+
| jobour.jo_mailqueue | optimize | error    | 1 when fixing table                                                                             |
| jobour.jo_mailqueue | optimize | Error    | Can't change ownership of the file '/usr/local/mysql/data/jobour/jo_mailqueue.MYD' (Errcode: 1) |
| jobour.jo_mailqueue | optimize | status   | Operation failed                                                                                |
+---------------------+----------+----------+---------------------------------------------------

从phpmyadmin打开之后，发现表正在使用中。

OPTIMIZE 优化表怎么会出现这种问题啊。是什么导致的啊。？谢谢！

------解决方案--------------------
索引坏了 myisam经常这么烂用命令修复 REPAIR TABLE