【數據庫-MySql】MySQL server has gone away & Got a packet bigger than 'max_allowed_packet' bytes

一、報錯

背景

新建數據庫，右鍵“運行SQL文件...”，文件大小[766 MB (803,415,614 字節)]

[Err] 2006 - MySQL server has gone away

[Err] 1153 - Got a packet bigger than 'max_allowed_packet' bytes

報錯1

[Err] 2006 - MySQL server has gone away
[Err] insert  into `dispensing_pack_tablet_hist`(`dsps_num`,`pack_num`,`tblt_cd`,`atm_num`,`cst_num`,`alt_cst_num`,`tblt_qtt`,`fsp_num`,`pack_tblt_num`,`rcpt_num`,`cst_pos`,`alt_cst_pos`,`tblt_seq_num`,`drts_cd`,`day_take_cnt`,`utc_num`,`delay_time`,`alt_delay_time`,`envelope_num`,`take_days`,`dsps_tgt_yn`,`tblt_shape`,`tblt_color`,`tblt_spec`,`tblt_note`,`tblt_barcode`,`tblt_lot_num`,`tblt_exp_date`,`user_exp_date`,`dev_id`,`dsps_tblt_qty`,`pwd_num`,`updt_dtm`,`updt_user_id`,`hspt_tblt_lot_num`,`hspt_tblt_exp_date`,`take_time_cd`,`take_tp_cd`,`take_tp_note`,`sup_dtm`,`ocs_order_tblt_key`,`take_tp_dose`,`tblt_note2`,`tblt_note3`,`tblt_note4`,`sig_lines`,`return_tblt_qty`,`rx_no`,`rx_doctor_nm`,`sup_user_id`,`sup_cfrm_dtm`,`sup_cfrm_user_id`,`tblt_maker`) values ('171118104957051',128,'011327',1,'434',NULL,1,0,288,'171118104856663','32F',NULL,5,'中晚餐前5分鐘',1,'',700,NULL,0,1,'Y','','','1MG/片','','','','20200228','','434',1,0,'20171118110544','u','','','','0800','','20171115133724','122333461:118','1.0000','','','','',0,'','','','20171115133724','','丹麥諾和諾德公司'),('171118104957051',172,'010895',1,'31',NULL,1,0,394,'171118104856664','62R',NULL,2,'',1,'',850,NULL,0,1,'Y','','','0.5G/片','','','','','','31',1,0,'20171118110713','u','','','#','1600','','20171118105019','122333641:136','1.0000','','','','',0,'','','','20171118105019','','深圳市中聯製藥有限公司'),('171118104957051',172,'011687',1,'404',NULL,1,0,395,'171118104856664','63F',NULL,10,'',1,'',1000,NULL,0,1,'Y','','','0.1G/粒','','','','20191229','','404',1,0,'20171118110713','u','','','#','1600','','20171118095325','122333641:144','1.0000','','','','',0,'','','','20171118095325','','齊魯製藥有限公司'),('171118104957051',173,'011682',1,'28',NULL,1,0,396,'171118104856664','62L',NULL,8,'',1,'',850,NULL,0,1,'Y','','','5MG/片','','','','20200501','','28',1,0,'20171118110955','u','','','#','2000','','20171114132452','122333641:142','1.0000','','','','',0,'','','','20171114132452','','衛材(中國)藥業有限公司'),('171118104957051',173,'011127',1,'429',NULL,1,0,397,'171118104856664','41F',NULL,12,'',1,'',800,NULL,0,1,'Y','','','20MG/片','','','','20200501','','429',1,0,'20171118110955','u','','','#','2000','','20171117133943','122333641:146','1.0000','','','','',0,'','','','20171117133943','','輝瑞製藥有限公司'),('171118104957051',174,'010895',1,'31',NULL,1,0,398,'171118104856664','62R',NULL,1,'',1,'',850,NULL,0,1,'Y','','','0.5G/片','','','','','','31',1,0,'20171118110958','u','','','#','0800','','20171118105019','122333641:135','1.0000','','','','',0,'','','','20171118105019','','深圳市中聯製藥有限公司'),('171118104957051',174,'011749',1,'191',NULL,1,0,399,'171118104856664','33R',NULL,3,'',1,'',550,NULL,0,1,'Y','','','5MG/片','','','1508082','20200901','','191',1,0,'20171118110958','u','','','#','0800','','20171117133822','122333641:137','1.0000','','','','',0,'','','','20171117133822','','阿斯利康製藥有限公司'),('171118104957051',174,'012443',1,'445',NULL,1,0,400,'171118104856664','22F',NULL,4,'',1,'',550,NULL,0,1,'Y','','','0.5MG/片','','','','20190308','','445',1,0,'20171118110958','u','','','#','0800','','20171115133741','122333641:138','1.0000','','','','',0,'','','','20171115133741','','衛材(中國)藥業有限公司'),('171118104957051',174,'012327',1,'354',NULL,1,0,401,'171118104856664','11R',NULL,5,'',1,'',200,NULL,0,1,'Y','','','5MG/片','','','','','','354',1,0,'20171118110958','u','','','#','0800','','20171114132501','122333641:139','1.0000','','','','',0,'','','','20171114132501','','天津力生製藥股份有限公司'),('171118104957051',174,'011074',1,'437',NULL,1,0,402,'171118104856664','31F',NULL,6,'',1,'',700,NULL,0,1,'Y','','','10MG/片','','','AAD8229','20171201','','437',1,0,'20171118110958','u','','','#','0800','','20171114132539','122333641:140','1.0000','','','','',0,'','','','20171114132539','','上海施貴寶公司'),('171118104957051',174,'011663',1,'0',NULL,0.5,0,403,'171118104856664','',NULL,7,'',1,'8',1000,NULL,0,1,'Y','','','20MG/片','','','','','','M',0.5,0,'20171118110959','u','','','#','0800','','','122333641:141','0.5000','','','','',0,'','','','','',''),('171118104957051',174,'011687',1,'404',NULL,1,0,404,'171118104856664','63F',NULL,9,'',1,'',1000,NULL,0,1,'Y','',''
[Err] 2006 - MySQL server has gone away
[Err] insert  into `dispensing_pack_tablet_hist`(`dsps_num`,`pack_num`,`tblt_cd`,`atm_num`,`cst_num`,`alt_cst_num`,`tblt_qtt`,`fsp_num`,`pack_tblt_num`,`rcpt_num`,`cst_pos`,`alt_cst_pos`,`tblt_seq_num`,`drts_cd`,`day_take_cnt`,`utc_num`,`delay_time`,`alt_delay_time`,`envelope_num`,`take_days`,`dsps_tgt_yn`,`tblt_shape`,`tblt_color`,`tblt_spec`,`tblt_note`,`tblt_barcode`,`tblt_lot_num`,`tblt_exp_date`,`user_exp_date`,`dev_id`,`dsps_tblt_qty`,`pwd_num`,`updt_dtm`,`updt_user_id`,`hspt_tblt_lot_num`,`hspt_tblt_exp_date`,`take_time_cd`,`take_tp_cd`,`take_tp_note`,`sup_dtm`,`ocs_order_tblt_key`,`take_tp_dose`,`tblt_note2`,`tblt_note3`,`tblt_note4`,`sig_lines`,`return_tblt_qty`,`rx_no`,`rx_doctor_nm`,`sup_user_id`,`sup_cfrm_dtm`,`sup_cfrm_user_id`,`tblt_maker`) values ('171125140956058',29,'012510',1,'444',NULL,2,0,70,'171125140815780','22F',NULL,4,'',1,'',550,NULL,0,1,'Y','','','20MG/片','','','','22220601','','444',2,0,'20171125141520','u','','','#','0800','','20171125131636','122942200:43','2.0000','','','','',0,'','','','20171125131636','','上海朝暉製藥'),('171125140956058',29,'011382',1,'0',NULL,0.75,0,71,'171125140815780','',NULL,12,'',1,'5',1000,NULL,0,1,'Y','','','50ΜG/片','','','','','','M',0.75,0,'20171125141524','u','','','#','0800','','','122942200:51','0.7500','','','','',0,'','','','','',''),('171125140956058',29,'011804',1,'38',NULL,4,0,72,'171125140815780','62R',NULL,14,'',1,'',850,NULL,0,1,'Y','','','0.63G/片','','','','22220601','','38',4,0,'20171125141520','u','','','#','0800','','20171124134554','122942200:53','4.0000','','','','',0,'','','','20171124134554','','北京費森尤斯卡比醫藥有限公司'),('171125140956058',29,'011104',1,'173',NULL,1,0,73,'171125140815780','41R',NULL,16,'',1,'',650,NULL,0,1,'Y','','','92.5MG/片','','','T7042','20171130','','173',1,0,'20171125141520','u','','','#','0800','','20171120134921','122942200:55','1.0000','','','','',0,'','','','20171120134921','','瑞士諾華製藥有限公司Novartis　Pharma'),('171125140956058',29,'012092',1,'422',NULL,1,0,74,'171125140815780','43F',NULL,18,'',1,'',800,NULL,0,1,'Y','','','20MG/片','','','151003','20180516','','422',1,0,'20171125141520','u','','','#','0800','','20171120135116','122942200:57','1.0000','','','','',0,'','','','20171120135116','','江蘇吉貝爾藥業'),('171125140956058',30,'011804',1,'38',NULL,4,0,75,'171125140815780','62R',NULL,6,'',1,'',850,NULL,0,1,'Y','','','0.63G/片','','','','22220601','','38',4,0,'20171125141524','u','','','#','1200','','20171124134554','122942200:45','4.0000','','','','',0,'','','','20171124134554','','北京費森尤斯卡比醫藥有限公司'),('171125140956058',30,'012092',1,'422',NULL,1,0,76,'171125140815780','43F',NULL,8,'',1,'',800,NULL,0,1,'Y','','','20MG/片','','','151003','20180516','','422',1,0,'20171125141524','u','','','#','1200','','20171120135116','122942200:47','1.0000','','','','',0,'','','','20171120135116','','江蘇吉貝爾藥業'),('171125140956058',30,'012510',1,'444',NULL,2,0,77,'171125140815780','22F',NULL,13,'',1,'',550,NULL,0,1,'Y','','','20MG/片','','','','22220601','','444',2,0,'20171125141524','u','','','#','1200','','20171125131636','122942200:52','2.0000','','','','',0,'','','','20171125131636','','上海朝暉製藥'),('171125140956058',31,'011315',1,'433',NULL,1,0,78,'171125140815780','33F',NULL,15,'3餐時嚼服',1,'',700,NULL,0,1,'Y','','','50MG/片','','','','20190228','','433',1,0,'20171125141526','u','','','','1600','','20171124134638','122942200:54','1.0000','','','','',0,'','','','20171124134638','','杭州中美華東製藥有限公司'),('171125140956058',32,'011315',1,'433',NULL,1,0,79,'171125140815780','33F',NULL,11,'3餐時嚼服',1,'',700,NULL,0,1,'Y','','','50MG/片','','','','20190228','','433',1,0,'20171125141527','u','','','','0800','','20171124134638','122942200:50','1.0000','','','','',0,'','','','20171124134638','','杭州中美華東製藥有限公司'),('171125140956058',33,'011315',1,'433',NULL,1,0,80,'171125140815780','33F',NULL,5,'3餐時嚼服',1,'',700,NULL,0,1,'Y','','','50MG/片','','','','20190228','','433',1,0,'20171125141529','u','','','','1200','','20171124134638','122942200:44','1.0000','','','','',0,'','','','20171124134638','','杭州中美華東製藥有限公司'),('171125142219059',10,'011774',1,'176',NULL,1,0,17,'171125131051755','41R',NULL,1,''

 

報錯2

[Err] 1153 - Got a packet bigger than 'max_allowed_packet' bytes
[Err] /*
SQLyog Ultimate v8.4 RC
MySQL - 5.1.54-community : Database - atms
*********************************************************************
*/


/*!40101 SET NAMES utf8 */;

/*!40101 SET SQL_MODE=''*/;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`atms` /*!40100 DEFAULT CHARACTER SET gbk */;

USE `atms`;

/*Table structure for table `alarm_hist` */

DROP TABLE IF EXISTS `alarm_hist`;

CREATE TABLE `alarm_hist` (
  `atm_num` int(11) NOT NULL DEFAULT '0',
  `alarm_dtm` varchar(14) NOT NULL DEFAULT '',
  `alarm_key` varchar(20) NOT NULL DEFAULT '',
  `alarm_style` varchar(10) DEFAULT NULL,
  `alarm_cd` varchar(10) DEFAULT NULL,
  `alarm_msg` varchar(250) DEFAULT NULL,
  `alarm_onoff` varchar(1) DEFAULT NULL,
  `dev_addr` varchar(20) DEFAULT NULL,
  `rcpt_num` varchar(50) DEFAULT NULL,
  `dsps_num` varchar(20) DEFAULT NULL,
  `pack_idx` int(11) DEFAULT NULL,
  `tblt_cd` varchar(50) DEFAULT NULL,
  `mnt_send_yn` varchar(1) DEFAULT 'N',
  `mnt_send_dtm` varchar(14) DEFAULT NULL,
  PRIMARY KEY (`atm_num`,`alarm_dtm`,`alarm_key`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

/*Data for the table `alarm_hist` */

二、分析

根據“報錯2”可以知道 導入的包"*.sql"文件時，由於文件中單個語包的大小大於 “max_allowed_packet”所以報錯，因此只需要將max_allowed_packet 這全局變量設置合適就可以了，如果您不知道sql文件中當個語句包的大小，建議您設置的大小大於文件大小即可。

如我的文件大小是 [766 MB (803,415,614 字節)] ，那麼就將 max_allowed_packet 設置爲800MB，也就是：

注：max_allowed_packet 設置過大可能會導致服務器響應不及時，甚至在網絡環境惡劣的情況及其容易發生丟包現象。建議只在導入大批量數據的時候臨時設置。

max_allowed_packet默認值爲 1MB ,也就是：

 

三、解決方案

第一步、查詢現在的值大小，並將參數保存到查詢窗口或記事本中。

SHOW VARIABLES LIKE '%max_allowed_packet%';

第二步、根據自己的實際情況設置合適的大小。

SET GLOBAL max_allowed_packet = 1024 * 1024 * 800;

第三步、使用第一步的數據，查看是否設置成功。

第四步、運行SQL文件，導入數據。

第五步、使用第二步的語句還原max_allowed_packet。