This will be same as -databases with all databases selected.Īdd a DROP DATABASE before each create.
Use -create-options instead.ĭump all the databases. Mysqldump supports the following options:ĭeprecated. If you are using a recent version of mysqldump to generate aĭump to be reloaded into a very old MySQL server, you should not use the mysqldump from an earlier MariaDB release cannot be used on MariaDB 10.3 and beyond. Mysqldump in MariaDB 10.3 includes logic to cater for the ansaction_registry table. Option (or -opt, which enables -quick).Įnabled by default, so to enable memory buffering, use To dump tables row by row, use the -quick Buffering in memory can be a problem if you are dumping Or it can retrieve the entire content from a table and buffer it in memoryīefore dumping it. Mysqldump can retrieve and dump table contents row by row,
To see a list of the options your version of mysqldump MariaDB dumps the INFORMATION_SCHEMA if you name it explicitly on the command line, although currently you must also use the -skip-lock-tables option. Mysqldump does not dump the INFORMATION_SCHEMA (or PERFORMANCE_SCHEMA, if enabled) database by default. databases or -all-databases option, entire If you do not name any tables following db_name or if you use the There are four general ways to invoke mysqldump: shell> mysqldump db_name The back-up time would benefit from a tool such as MyDumper. It's recommended that you back-up from a network location to remove disk IOPS on the database server, but it is vital to use a separate network card to keep network bandwidth available for regular traffic.Īlthough mysqldump will by default preserve your resources for regular spindle disks and low-core hardware, this doesn't mean that concurrent dumps cannot benefit from hardware architecture like SAN, flash storage, low write workload. The dump is done sequentially, on a per table basis, causing a full-table scan and many buffer page misses on tables that are not fully cached in memory. When you back-up on the same device as the database, this produces unnecessary random IOPS. This method is good for a heavily loaded server.ĭisk input/outputs per second (IOPS), can however increase for multiple reasons. Mysqldump doesn't usually consume much CPU resources on modern hardware as by default it uses a single thread. Mysqldump supports the enhancements for START TRANSACTION WITH CONSISTENT SNAPSHOT.
Procedures and functions are however also part of the system tables (for example mysql.proc). However, stored procedures, views, and events are not, and need extra parameters to be recreated explicitly (for example, -routines and -events). Mysqldump dumps triggers along with tables, as these are part of the table definition. If you are doing a backup on the server and your tables all are MyISAM tables,Ĭonsider using mysqlhotcopy instead because it can accomplish faster However, mysqldump can also be used to generate files in CSV, other Theĭump typically contains SQL statements to create the table, populate it, orīoth. It can be used to dump a database or a collection of databases forīackup or transfer to another database server (not necessarily MariaDB or MySQL). The mysqldump client is a backup program originally written by Igor From MariaDB 10.5.2, mariadb-dump is the name of the command-line client, with mysqldump a symlink.
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