在线，急急急，，求大神指导mysql> show databases;显示有库但，，，

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| dbo                |
| fitness            |
| mysql              |
| test               |
+--------------------+
5 rows in set (0.00 sec)

mysql> use fitness;
Database changed
mysql>
mysql>
mysql> show tables;
Empty set (0.00 sec)

mysql> use dbo;
ERROR 1049 (42000): Unknown database 'dbo;'
mysql>

怎么解决呀