MySQL Wordpressのデータベース（？）だけ権限がおかしくなる

お世話になっております。

定期的にWordpressのデータベースだけおかしくなり「データベース確率エラー」が出ます。
他のデータベースに関しては動作しているようですが...。

MySQLの再起動でも治らず、MySQLにログインして再度Wordpressのデータベースだけの権限を設定すると再度動作するようになります。
何かご存知の方はいますでしょうか。

CentOS 6.6
Server version: 5.5.44 MySQL Community Server (GPL) by Remi

Bash
1GRANT ALL PRIVILEGES ON wordpress.* to hoge@localhost IDENTIFIED BY 'hoge';

/var/log/mysqld.log

bash
1Version: '5.5.44'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Server (GPL) by Remi
2150726 22:43:01 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
3150726 22:43:02 [Note] /usr/libexec/mysqld (mysqld 5.5.44) starting as process 1395 ...
4150726 22:43:02 [Note] Plugin 'FEDERATED' is disabled.
5150726 22:43:02 InnoDB: The InnoDB memory heap is disabled
6150726 22:43:02 InnoDB: Mutexes and rw_locks use GCC atomic builtins
7150726 22:43:02 InnoDB: Compressed tables use zlib 1.2.3
8150726 22:43:02 InnoDB: Using Linux native AIO
9150726 22:43:02 InnoDB: Initializing buffer pool, size = 128.0M
10150726 22:43:02 InnoDB: Completed initialization of buffer pool
11150726 22:43:02 InnoDB: highest supported file format is Barracuda.
12InnoDB: The log sequence number in ibdata files does not match
13InnoDB: the log sequence number in the ib_logfiles!
14150726 22:43:02  InnoDB: Database was not shut down normally!
15InnoDB: Starting crash recovery.
16InnoDB: Reading tablespace information from the .ibd files...
17InnoDB: Restoring possible half-written data pages from the doublewrite
18InnoDB: buffer...
19150726 22:43:03  InnoDB: Waiting for the background threads to start
20150726 22:43:04 InnoDB: 5.5.44 started; log sequence number 41664936
21150726 22:43:04 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
22150726 22:43:04 [Note]   - '0.0.0.0' resolves to '0.0.0.0';
23150726 22:43:04 [Note] Server socket created on IP: '0.0.0.0'.
24150726 22:43:04 [Note] Event Scheduler: Loaded 0 events
25150726 22:43:04 [Note] /usr/libexec/mysqld: ready for connections.
26Version: '5.5.44'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Server (GPL) by Remi
27150728  1:25:42 [Note] /usr/libexec/mysqld: Normal shutdown
28
29150728  1:25:42 [Note] Event Scheduler: Purging the queue. 0 events
30150728  1:25:42  InnoDB: Starting shutdown...
31150728  1:25:43  InnoDB: Shutdown completed; log sequence number 42047353
32150728  1:25:43 [Note] /usr/libexec/mysqld: Shutdown complete
33
34150728 01:25:43 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
35150728 01:25:44 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
36150728  1:25:44 [Note] /usr/libexec/mysqld (mysqld 5.5.44) starting as process 11129 ...
37150728  1:25:44 [Note] Plugin 'FEDERATED' is disabled.
38150728  1:25:44 InnoDB: The InnoDB memory heap is disabled
39150728  1:25:44 InnoDB: Mutexes and rw_locks use GCC atomic builtins
40150728  1:25:44 InnoDB: Compressed tables use zlib 1.2.3
41150728  1:25:44 InnoDB: Using Linux native AIO
42150728  1:25:44 InnoDB: Initializing buffer pool, size = 128.0M
43150728  1:25:44 InnoDB: Completed initialization of buffer pool
44150728  1:25:44 InnoDB: highest supported file format is Barracuda.
45150728  1:25:44  InnoDB: Waiting for the background threads to start
46150728  1:25:45 InnoDB: 5.5.44 started; log sequence number 42047353
47150728  1:25:45 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
48150728  1:25:45 [Note]   - '0.0.0.0' resolves to '0.0.0.0';
49150728  1:25:45 [Note] Server socket created on IP: '0.0.0.0'.
50150728  1:25:45 [Note] Event Scheduler: Loaded 0 events
51150728  1:25:45 [Note] /usr/libexec/mysqld: ready for connections.
52Version: '5.5.44'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Server (GPL) by Remi
53150728  1:27:42 [Note] /usr/libexec/mysqld: Normal shutdown
54
55150728  1:27:42 [Note] Event Scheduler: Purging the queue. 0 events
56150728  1:27:42  InnoDB: Starting shutdown...
57150728  1:27:43  InnoDB: Shutdown completed; log sequence number 42047353
58150728  1:27:43 [Note] /usr/libexec/mysqld: Shutdown complete
59
60150728 01:27:43 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
61150728 01:28:10 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
62150728  1:28:10 [Note] /usr/libexec/mysqld (mysqld 5.5.44) starting as process 1375 ...
63150728  1:28:10 [Note] Plugin 'FEDERATED' is disabled.
64150728  1:28:10 InnoDB: The InnoDB memory heap is disabled
65150728  1:28:10 InnoDB: Mutexes and rw_locks use GCC atomic builtins
66150728  1:28:10 InnoDB: Compressed tables use zlib 1.2.3
67150728  1:28:10 InnoDB: Using Linux native AIO
68150728  1:28:10 InnoDB: Initializing buffer pool, size = 128.0M
69150728  1:28:10 InnoDB: Completed initialization of buffer pool
70150728  1:28:10 InnoDB: highest supported file format is Barracuda.
71150728  1:28:11  InnoDB: Waiting for the background threads to start
72150728  1:28:12 InnoDB: 5.5.44 started; log sequence number 42047353
73150728  1:28:12 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
74150728  1:28:12 [Note]   - '0.0.0.0' resolves to '0.0.0.0';
75150728  1:28:12 [Note] Server socket created on IP: '0.0.0.0'.
76150728  1:28:12 [Note] Event Scheduler: Loaded 0 events
77150728  1:28:12 [Note] /usr/libexec/mysqld: ready for connections.
78Version: '5.5.44'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Server (GPL) by Remi