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https://dev.mysql.com/doc/refman/5.7/en/innodb-statistics-estimation.html
The auto-rehash feature enables automatic name completion of database, table, and column names for interactive users. Choose a value that results in reasonably accurate estimates for all tables in your database without requiring excessive I/O. If ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-system-tablespace.html
Note If your databases only use the InnoDB engine, it may be simpler to dump all databases, stop the server, remove all databases and InnoDB log files, restart the server, and import the dump files. The system tablespace is the storage area for the ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-transaction-isolation-levels.html
Transaction isolation is one of the foundations of database processing. This is because a non-locking SELECT statement presents the state of the database from a read-view which consists of transactions committed before the read-view was created and ...Isolation is the I in the acronym ACID; the isolation level is the setting that fine-tunes the balance between performance and reliability, consistency, and reproducibility of results when multiple transactions are making changes and performing queries at the same ...
https://dev.mysql.com/doc/refman/5.7/en/installing-source-distribution.html
If that does not solve the problem, please enter it into our bugs database using the instructions given in Section 1.5, “How to Report Bugs or Problems”. On Windows, generate the data directory, then create a .zip archive installation package: ... To install MySQL from a standard source distribution: Verify that your system satisfies the tool requirements listed at Section 2.8.2, “Source Installation ...
https://dev.mysql.com/doc/refman/5.7/en/myisam-crash-recovery.html
This section describes how to check for and deal with data corruption in MySQL databases. When performing crash recovery, it is important to understand that each MyISAM table tbl_name in a database corresponds to the three files in the database ...
https://dev.mysql.com/doc/refman/5.7/en/myisampack.html
If you are not in the database directory, you should specify the path name to the file. (myisampack creates an intermediate file named tbl_name.TMD in the database directory while it compresses the table. When the table is used later, the server ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-installation.html
This section covers hardware and software requirements; networking issues; installation of NDB Cluster; basic configuration issues; starting, stopping, and restarting the cluster; loading of a sample database; and performing queries. We use the ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-limitations-syntax.html
NDB 7.5.2 adds several new tables to the ndbinfo information database providing information about CPU and thread activity by node, thread ID, and thread type. NDB 7.5.3 adds new tables to the ndbinfo information database providing information about ... Some SQL statements relating to certain MySQL features produce errors when used with NDB tables, as described in the following list: Temporary ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-limitations.html
You can report any discrepancies that you encounter to the MySQL bugs database using the instructions given in Section 1.5, “How to Report Bugs or Problems”. In the sections that follow, we discuss known limitations in current releases of NDB ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-management.html
More detailed information about NDB Cluster operations is available in real time through an SQL interface using the ndbinfo database. For more information, see Section 21.6.15, “ndbinfo: The NDB Cluster Information Database”. The values of these ... Managing an NDB Cluster involves a number of tasks, the first of which is to configure and start NDB ...