You may be able to provide a custom screen as you woudl for a 404 or via .htaccess, but consider:
1) if the custom screen accesses the database, and the error continues, you could bring your server to a grinding halt.
2) Better to find the actual cause of the error rather than mask it on the front end.

Yes, I need to clear the error, but I'm researching and don't find solutions.

The white screen for database error isn't a 404 error.

If it's spasmodic, it could be a server load or timeout problem. If you can monitor or increase those things...

I agree with Gondwana.

I think this error comes up when concrete5 cannot establish a connection with the database.

Are you on a shared hosting plan? Probably the issue has something to do with the server (for instance, hitting the limit of mysql connections...)

If I were you, I'd contact the hosting company (ask them to have a look at their logs and send them any information you have on when this happens).

Regards,

Jordi

thanks Jordi and Godwana

I was looking the visit stats fro mthe host and don't seem to be hit a limit of connections