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https://dev.mysql.com/doc/refman/8.0/en/innodb-performance-schema.html
You can profile certain internal InnoDB operations using the MySQL Performance Schema feature. To use this feature to examine InnoDB performance: You must be generally familiar with how to use the Performance Schema feature. Instance tables relevant ...To view InnoDB-related instruments, you can query the setup_instruments table for instrument names that contain ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-innodb-redo-log-files-table.html
The innodb_redo_log_files table contains a row for each active InnoDB redo log file. The innodb_redo_log_files table has the following columns: FILE_ID The ID of the redo log file. SIZE_IN_BYTES The size of the redo log data in the file, in bytes.
https://dev.mysql.com/doc/refman/8.0/en/load-data.html
Input File Location These rules determine the LOAD DATA input file location: If LOCAL is not specified, the file must be located on the server host. INTO OUTFILE in tandem with LOAD DATA to write data from a database into a file and then read the ...
https://dev.mysql.com/doc/refman/8.0/en/error-lost-connection.html
Usually it indicates network connectivity trouble and you should check the condition of your network if this error occurs frequently. If the error message includes “during query,” this is probably the case you are experiencing. If you know that ...Sometimes the “during query” form happens when millions of rows are being sent as part of one or more ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-tablespace-encryption.html
Does data remain encrypted on the network? Data encrypted by the InnoDB data-at-rest feature is decrypted when it is read from the tablespace file. What are the encryption algorithms used with InnoDB data-at-rest encryption? A.17.4. Is it possible ...What data types and data lengths does InnoDB data-at-rest encryption support? ...According to ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-buffer-pool-resize.html
Command line: $> mysqld --innodb-buffer-pool-chunk-size=134217728 Configuration file: [mysqld] innodb_buffer_pool_chunk_size=134217728 The following conditions apply when altering innodb_buffer_pool_chunk_size: If the new ... You can configure ...A ...
https://dev.mysql.com/doc/refman/8.0/en/log-file-maintenance.html
Note For the server to recreate a given log file after you have renamed the file externally, the file location must be writable by the server. However, you must clean up these files regularly to ensure that the logs do not take up too much disk ...
https://dev.mysql.com/doc/refman/8.0/en/load-data-local-security.html
When --load-data-local-dir applies, the option value designates the directory in which local data files must be located. MySQL Shell's data upload utilities use LOAD DATA LOCAL INFILE statements to upload data, so the local_infile system variable ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-disk-data-objects.html
You must also specify at least one data file; you can add more data files to the tablespace after the tablespace is created. A log file group, a tablespace, and any Disk Data tables using these must be created in a particular order. Undo log files ... NDB Cluster Disk Data storage is implemented using the following objects: Tablespace: Acts as containers for other Disk Data ...
https://dev.mysql.com/doc/refman/8.0/en/data-directory-initialization.html
For example, you might see an error like this: bin/mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory If this happens, you must install the missing libraries manually or with your ...