StatementCallback; SQL [SELECT T01.`ORDNO`, T01.`CUSNO`, T01.`CUSPO`, T01.`ORDTYP`, T01.`ORDAMT`, T01.`ORDSTA`, T01.`ORDSTA2`, T01.`ORDDAT`, T01.`SHPDAT`, T02.`CNAME` FROM CRAZYBIKES.`ORDERHEAD` T01 left outer join CRAZYBIKES.`DMCMP100` T02 ON T01.`CUSNO`=T02.`CUSNO` WHERE T01.`ORDNO`=300123 ORDER BY T01.`ORDNO` ASC limit 11]; The last packet successfully received from the server was 55,059,041 milliseconds ago. The last packet sent successfully to the server was 55,059,042 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.