The exception is thrown when there is no any free connection for freeConnTimeout duration while trying to lock one.
The exception is thrown when a sql query was marked as one row respond and the query returns a multiple rows. Transaction of the query is rollbacked.
The exception is thrown when something bad has happen while query passing to server or loading from server. This exception has no bearing on the SQL errors.
The exception is thrown when invalid transaction interface is passed to isTransactionReady and getTransaction methods.
Pool handles several connections to one or more SQL servers. If connection is lost, pool tries to reconnect over reconnectTime duration. *
Module describes connection pool to data bases. Pool handles several connections to one or more sql servers. If connection is lost, pool tries to reconnect over reconnectTime duration.