innodb_lock_wait_timeout参数主要被用于在出现死锁情况的时候等待指定的时间后回滚. innodb_support_xa参数设置是否支持分布式事务,默认值是on,关闭这个参数,可减少磁盘刷新次数提高性能. innodb_log_buffer_size参数是日志缓存的大小,一般8~16M就够了. innodb_log_file_size参数是一个日志组中每个日志文件的大小,这...
Innodb_buffer_pool_size 总内存-(每个线程锁需要的内存*连接数)- 系统的保留内存 key_buffer_size (3).I/O相关配置参数 InnoDb存储引擎的I/O参数设置: Innodb_log_file_size Innodb_log_file_in_group Innodb_log_buffer_size Innodb_flush_log_at_trx_commit Innodb_flush_method = O_DIRECT Innodb_file_...
To temporarily increase buffer pool size: SETGLOBALinnodb_buffer_pool_size=(SELECT@@innodb_buffer_pool_size)*10#checkvia this: #SELECT@@innodb_buffer_pool_size/1024/1024/1024 To permanently increase, you will need to edit my.cnf file. Here are my go to commands for ubuntu + mysql 8. ...
/usr/local/bin/docker-entrypoint.sh --innodb-page-size=64KB --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci --sql-mode=NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION --general-log=1 --general-log-file=/var/lib/mysql/general-log....
使用SET GLOBAL不会影响您执行该陈述式的目前工作阶段。它会变更全域选项，但目前工作阶段仍会使用工作...
SET GLOBAL sort_buffer_size = 1000000, SESSION sort_buffer_size = 1000000; SET @@GLOBAL.sort_buffer_size = 1000000, @@LOCAL.sort_buffer_size = 1000000; SET GLOBAL max_connections = 1000, sort_buffer_size = 1000000; The @@GLOBAL., @@PERSIST., @@PERSIST_ONLY., @@SESSION., and @@ ...
mysql>SETGLOBALversion='abc';ERROR 1238 (HY000):Variable 'version' is a read only variable GLOBAL、PERSISTまたはPERSIST_ONLYを使用して、セッション値のみを持つ変数を設定します: mysql>SETGLOBALsql_log_bin=ON;ERROR 1228 (HY000):Variable 'sql_log_bin' is a SESSION variable and can't be...
Osku, please find out why mysqld is crashing. Also note the following: srv0start.c: " if (srv_n_log_files * srv_log_file_size >= 262144) { fprintf(stderr, "InnoDB: Error: combined size of log files must be < 4 GB\n"); return(DB_ERROR); } " The COMBINED log size must be...
In the mysql config file, innodb_flush_log_at_trx_commit is set to 2. However, the MySQL official document recommends to set it to 1, which helps keep InnoDB ACID Compliant. "For durability and consistency in a replication setup that uses InnoDB with transactions: Always set innodb_flush_...
Global 系统变量 activate_all_roles_on_login auto_increment_cache_size auto_increment_increment auto_increment_offset autocommit automatic_sp_privileges binlog_row_image block_encryption_mode character_set_client character_set_connection cardinality_estimation_model character_set_database character_set_files...