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  • max_allowed_packet和slave_max_allowed_packet

    igoodful@10.10.10.10 ((none)) > show global variables like '%max_allowed_packet%';
    +--------------------------+------------+
    | Variable_name            | Value      |
    +--------------------------+------------+
    | max_allowed_packet       | 67108864   |
    | slave_max_allowed_packet | 1073741824 |
    +--------------------------+------------+
    2 rows in set (0.00 sec)
    
    Tue Jun 23 16:05:04 2020
    igoodful@10.10.10.10  ((none)) > select 67108864/1024/1024;
    +--------------------+
    | 67108864/1024/1024 |
    +--------------------+
    |        64.00000000 |
    +--------------------+
    1 row in set (0.00 sec)
    
    Tue Jun 23 16:05:20 2020
    igoodful@10.10.10.10  ((none)) > select 1073741824/1024/1024;
    +----------------------+
    | 1073741824/1024/1024 |
    +----------------------+
    |        1024.00000000 |
    +----------------------+
    1 row in set (0.00 sec)
    
    Tue Jun 23 16:09:09 2020
    igoodful@10.10.10.10  ((none)) >

    ############################################

    max_allowed_packet变量一般线上设置成64M,过小容易造成批量插入语句执行失败。

    slave_max_allowed_packet变量一般设置成1G,过小容易造成复制失败


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  • 原文地址:https://www.cnblogs.com/igoodful/p/13182676.html
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