![]() To get more detailed information, see InnoDB startup options and system variables. It consists of the file name, file size, autoextend attribute, and max attribute. The full syntax for a data file is as follows:įile_name:file_size] This data file name is ibdata1, and its size is approximately 12MB. If a value for innodb_data_file_path has not been defined, a single auto-extending data file is to be generated by default. It specifies the information about the InnoDB system tablespace data files. The basic syntax for this command is –innodb-data-file-path=file_name. Use the -innodb-read-io-threads=# command to define the number of InnoDB file I/O streams. The allowed values are 0, 1, or 2 (for traditional, consecutive, or interleaved lock mode, respectively). Auto-increment values are generated in the lock mode. The basic syntax for this command is -innodb-autoinc-lock-mode=#. When innodb_strict_mode is enabled, InnoDB issues errors for particular conditions. The strict mode acts as a shield against various accidental outcomes of different sequences of SQL statements and operational modes. ![]() The basic syntax for this command is -innodb-file-per-table. When it comes to buffer pools in the multi-gigabyte range, the division of an entire pool into multiple separate instances can improve concurrency. It denotes the number of regions that the InnoDB buffer pool must consist of. The basic syntax for this command is -innodb-buffer-pool-instances=#. The InnoDB buffer pool is a memory domain where the InnoDB storage engine caches its table and index data. The basic syntax for this command is -innodb-buffer-pool-size=#. It configures how often the transactions are flushed to the redo log. The basic syntax for this command is -innodb-flush-log-at-trx-commit=#. Here is the list of available InnoDB server variables that help speed up and optimize your performance and interactions between MySQL databases and the InnoDB storage engine: For instance:ĬityBorn VARCHAR(40) NOT NULL DEFAULT 'Unknown'ĮNGINE=INNODB InnoDB server variables & performance tuning tips In order to create an InnoDB table, you simply specify ENGINE = InnoDB in your CREATE TABLE statement. See how it all works together in a single InnoDB Cluster: Creating InnoDB tables
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