Connection lost

[Gharieb Abdel-Mawla]

Hi,

I have a problem with MySQL
the system was running fine but suddenly the connection lost and the service of MySQL had been stopped.when I opened the error log file I found the following errors:
=======================
InnoDB: which exceeds the log group capacity 358609306.
InnoDB: If you are using big BLOB or TEXT rows, you must set the
InnoDB: combined size of log files at least 10 times bigger than the
InnoDB: largest such row.
=======================
NOTE: I have only one data file (ibdata1)with size 34,607,104 KB

So,I started the service again and every thing was fine but I don't know.. will this problem happening again??
Or how can I handle this problem to avoid it in the future?
and how can I expand the MySQL data file size or to be more than one file or if the file has exceeded the max size how can I make the MySQL create another one automatically?

Thanks in advance.