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  • mysql批量进行optimize table操作

    数据库运行一段时间后,有可能会有磁盘磁片产生,此时我们需要进行optimize table操作

    # 获取需要optimize的表:如下为获取总大小小于80G的表进行操作:
    mysql -utroot -S /tmp/mysql_3306.sock -sNe "select concat(table_schema,'.',table_name), table_schema,table_name,ENGINE, sum(data_length/1024/1024) as data_mb , sum(index_length/1024/1024) as index_mb, sum((data_length+index_length)/1024/1024) as all_mb, sum(table_rows) from information_schema.tables where table_schema not in('mysql','performance_schema','information_schema') and engine in ('innodb','myisam') group by table_schema,table_name having all_mb<=80000 order by all_mb asc ;"


    将上面获取到的表名写入一个文件,如optimiz_table.tables
    写个脚本来循环跑
    #!/bin/bash
    set -eux
    set -o pipefail

    table_file='optimize_table.tables'
    log_file='optimize_table.log'

    while read line
    do
      sql="optimize table $line"
      echo "`date +"%F %T"`: begin $sql" | tee -a "$log_file"
      mysql -uroot -S /tmp/mysql_3306.sock -e "$sql" 2>&1 | tee -a "$log_file"
      echo "`date +"%F %T"`: sucess $sql" | tee -a "$log_file"
      sleep 1
    done < "$table_file"

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  • 原文地址:https://www.cnblogs.com/zejin2008/p/8601793.html
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