我的配置文件如下。您对解决该问题有什么建议吗？
group = mysql-connection
id = mydlr
host = ****
port = 3306
username = ****
password = ****
database = kannel_db
max-connections = 1
group = dlr-db
id = mydlr
table = dlr
field-smsc = smsc
field-timestamp = ts
field-destination = destination
field-source = source
field-service = service
field-url = url
field-mask = mask
field-status = status
field-boxc-id = boxc