Description: An unexpected I/O error was detected from a lower layer. When such I/O exceptions are caught, they are rethrown as SQL exceptions using the ERR_IO_EXCEPTION JZ006 sqlstate. These errors are often the result of network communication problems. If the I/O exception causes the database connection to be closed, jConnect will chain a JZ0C1 exception to the JZ006. Client applications can look for the JZ0C1 exception in the chain to see if the connection is still usable.
Action: Examine the text of the original I/O exception message, and proceed from there.