repair mysql database

Today, the Sai Inspires db showed an error,

Database error 145 while doing
query Table
'./the_name_of_our_db/si_usermessage' is marked as crashed and 
should be repaired

Solution from PB:

mysql -u root -p
mysql> show databases;
mysql> use the_name_of_our_db;
mysql> show tables;
mysql> repair table si_usermessage;