From the command line: mysql --max_allowed_packet=100M Or modify the filemy.iniormy.cnfand put this line under [mysqld] section in your file: max_allowed_packet=100M The size is up to you, the bigger it is, the
//MaxPacketSize [32 bit] (none) //data[8] = 0x00 //data[9] = 0x00 //data[10] = 0x00 //data[11] = 0x00 //Charset [1 byte] data[12] = byte(c.collation) //Filler [23 bytes] (all 0x00) pos := 13 + 23 //User [null terminated string] if len(c.user) > 0 { pos...
mysql>select*from t1;ERROR2020(HY000):Got packet bigger than'max_allowed_packet'bytes ##设置 mysql 客户端--max-allowed-packet=22M,读取成功[root@localhost~]# mysql-h127.0.0.1-P13306-uroot-proot--max-allowed-packet=23068672sbtest-e"select * from t1;">/tmp/t1.txt[root@localhost~]# ll-...
● net->buff大小初始net->max_packet, 读取会导致会导致 buff的realloc最大net->max_packet_size ● 一次sql命令的结束都会调用net_flush,把buff里的数据 都写到socket里. VIO缓冲 ●从my_read_read可以看出每次packet读取都是按需读取, 为了减少系统调用,vio层面加了一个read_buffer. ● 每次读取前先判断vio-...
2.客户端用一个数据包将查询发送到服务器,所以max_packet_size这个配置参数对于大查询很重要的原因。 3.客户端从服务器提取数据的时候是服务器产生数据的同时把它们“推”到客户端的,客户端只需要接收推出来的数据,无法告诉服务器停止 发送数据。 查询缓存 ...
select MAX(LEN) FROM T_DATA -> 88667 (_PACKET_SIZE = 90000) select MAX(LEN) FROM T_DATA -> 130010 (_PACKET_SIZE = 131072) Werner Frerichs Edited 1 time(s). Last edit at 10/25/2006 01:01AM by Werner Frerichs. Subject Views ...
默认情况下,MySQL 的导入文件大小限制为 1GB。这是通过 max_allowed_packet 参数来控制的。这个参数定义了 MySQL服务器和客户端之间传输数据的最大大小。如果超过了这个大小,MySQL 将会发送一个错误消息并停止导入。 如果你需要导入一个大于 1GB 大小的文件,你需要修改 max_allowed_packet 参数的值。你可以通过在 My...
max_allowed_packet的协议限制为1GB。该值应为1024的倍数;非倍数的值向下舍入为最接近的倍数。 When you change the message buffer size by changing the value of the max_allowed_packet variable, you should also change the buffer size on the client side if your client program permits it. The ...
单张表size 过大,导致导入失败 解决: mysql 命令行模式下 set global max_allowed_packet = 1024*1024*160; 设置单张表的大小为 160 M; 详解: mysql 命令行模式下: show VARIABLES like '%max_allowed_packet%'; 捕获.PNG max_allowed_packet : 单张表的最大允许大小为 4 M;slave_max_allowed_packet:最...
--max_allowed_packet=<size> The maximum packet length to send to or receive from the server. (Default value is 16MB.) So as a client, it is apparently possible to pick your own setting for the maximum allowed packet size you will send or accept from the server. Indeed, I can actu...