MySql “Nested transactions are not supported” exception

If you are getting an unexpected “Nested transactions are not supported” exception from your MySql database then you may have hit this bug.

I firstly suspected Spring.NET, then the MySql ADO.NET driver. We scratched our heads for a couple of days on this one before I found that bug report.

To make a long story short, simply commenting out the query_cache_size option in the my.ini file solved it. What effect this will have on performance I haven’t determined yet.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s