mysqldump¶
Invocation Syntax¶
shell> mysqldump [options] db_name [tbl_name ...]
shell> mysqldump [options] --databases db_name ...
shell> mysqldump [options] --all-databases
Option Syntax - Alphabetical Summary¶
| Option Name | Description | Introduced |
|---|---|---|
| --add-drop-database | Add DROP DATABASE statement before each CREATE DATABASE statement | |
| --add-drop-table | Add DROP TABLE statement before each CREATE TABLE statement | |
| --add-drop-trigger | Add DROP TRIGGER statement before each CREATE TRIGGER statement | |
| --add-locks | Surround each table dump with LOCK TABLES and UNLOCK TABLES statements | |
| --all-databases | Dump all tables in all databases | |
| --allow-keywords | Allow creation of column names that are keywords | |
| --apply-slave-statements | Include STOP SLAVE prior to CHANGE MASTER statement and START SLAVE at end of output | |
| --bind-address | Use specified network interface to connect to MySQL Server | 5.6.1 |
| --character-sets-dir | Directory where character sets are installed | |
| --comments | Add comments to dump file | |
| --compact | Produce more compact output | |
| --compatible | Produce output that is more compatible with other database systems or with older MySQL servers | |
| --complete-insert | Use complete INSERT statements that include column names | |
| --compress | Compress all information sent between client and server | |
| --create-options | Include all MySQL-specific table options in CREATE TABLE statements | |
| --databases | Interpret all name arguments as database names | |
| --debug | Write debugging log | |
| --debug-check | Print debugging information when program exits | |
| --debug-info | Print debugging information, memory, and CPU statistics when program exits | |
| --default-auth | Authentication plugin to use | |
| --default-character-set | Specify default character set | |
| --defaults-extra-file | Read named option file in addition to usual option files | |
| --defaults-file | Read only named option file | |
| --defaults-group-suffix | Option group suffix value | |
| --delayed-insert | Write INSERT DELAYED statements rather than INSERT statements | |
| --delete-master-logs | On a master replication server, delete the binary logs after performing the dump operation | |
| --disable-keys | For each table, surround INSERT statements with statements to disable and enable keys | |
| --dump-date | Include dump date as "Dump completed on" comment if --comments is given | |
| --dump-slave | Include CHANGE MASTER statement that lists binary log coordinates of slave's master | |
| --enable-cleartext-plugin | Enable cleartext authentication plugin | 5.6.28 |
| --events | Dump events from dumped databases | |
| --extended-insert | Use multiple-row INSERT syntax | |
| --fields-enclosed-by | This option is used with the --tab option and has the same meaning as the corresponding clause for LOAD DATA | |
| --fields-escaped-by | This option is used with the --tab option and has the same meaning as the corresponding clause for LOAD DATA | |
| --fields-optionally-enclosed-by | This option is used with the --tab option and has the same meaning as the corresponding clause for LOAD DATA | |
| --fields-terminated-by | This option is used with the --tab option and has the same meaning as the corresponding clause for LOAD DATA | |
| --flush-logs | Flush MySQL server log files before starting dump | |
| --flush-privileges | Emit a FLUSH PRIVILEGES statement after dumping mysql database | |
| --force | Continue even if an SQL error occurs during a table dump | |
| --help | Display help message and exit | |
| --hex-blob | Dump binary columns using hexadecimal notation | |
| --host | Host on which MySQL server is located | |
| --ignore-table | Do not dump given table | |
| --include-master-host-port | Include MASTER_HOST/MASTER_PORT options in CHANGE MASTER statement produced with --dump-slave | |
| --insert-ignore | Write INSERT IGNORE rather than INSERT statements | |
| --lines-terminated-by | This option is used with the --tab option and has the same meaning as the corresponding clause for LOAD DATA | |
| --lock-all-tables | Lock all tables across all databases | |
| --lock-tables | Lock all tables before dumping them | |
| --log-error | Append warnings and errors to named file | |
| --login-path | Read login path options from .mylogin.cnf | 5.6.6 |
| --master-data | Write the binary log file name and position to the output | |
| --max-allowed-packet | Maximum packet length to send to or receive from server | |
| --net-buffer-length | Buffer size for TCP/IP and socket communication | |
| --no-autocommit | Enclose the INSERT statements for each dumped table within SET autocommit = 0 and COMMIT statements | |
| --no-create-db | Do not write CREATE DATABASE statements | |
| --no-create-info | Do not write CREATE TABLE statements that re-create each dumped table | |
| --no-data | Do not dump table contents | |
| --no-defaults | Read no option files | |
| --no-set-names | Same as --skip-set-charset | |
| --no-tablespaces | Do not write any CREATE LOGFILE GROUP or CREATE TABLESPACE statements in output | |
| --opt | Shorthand for --add-drop-table --add-locks --create-options --disable-keys --extended-insert --lock-tables --quick --set-charset. | |
| --order-by-primary | Dump each table's rows sorted by its primary key, or by its first unique index | |
| --password | Password to use when connecting to server | |
| --pipe | Connect to server using named pipe (Windows only) | |
| --plugin-dir | Directory where plugins are installed | |
| --port | TCP/IP port number for connection | |
| --print-defaults | Print default options | |
| --protocol | Connection protocol to use | |
| --quick | Retrieve rows for a table from the server a row at a time | |
| --quote-names | Quote identifiers within backtick characters | |
| --replace | Write REPLACE statements rather than INSERT statements | |
| --result-file | Direct output to a given file | |
| --routines | Dump stored routines (procedures and functions) from dumped databases | |
| --secure-auth | Do not send passwords to server in old (pre-4.1) format | 5.6.17 |
| --set-charset | Add SET NAMES default_character_set to output | |
| --set-gtid-purged | Whether to add SET @@GLOBAL.GTID_PURGED to output | 5.6.9 |
| --shared-memory-base-name | Name of shared memory to use for shared-memory connections | |
| --single-transaction | Issue a BEGIN SQL statement before dumping data from server | |
| --skip-add-drop-table | Do not add a DROP TABLE statement before each CREATE TABLE statement | |
| --skip-add-locks | Do not add locks | |
| --skip-comments | Do not add comments to dump file | |
| --skip-compact | Do not produce more compact output | |
| --skip-disable-keys | Do not disable keys | |
| --skip-extended-insert | Turn off extended-insert | |
| --skip-opt | Turn off options set by --opt | |
| --skip-quick | Do not retrieve rows for a table from the server a row at a time | |
| --skip-quote-names | Do not quote identifiers | |
| --skip-set-charset | Do not write SET NAMES statement | |
| --skip-triggers | Do not dump triggers | |
| --skip-tz-utc | Turn off tz-utc | |
| --socket | Unix socket file or Windows named pipe to use | |
| --ssl | Enable connection encryption | |
| --ssl-ca | File that contains list of trusted SSL Certificate Authorities | |
| --ssl-capath | Directory that contains trusted SSL Certificate Authority certificate files | |
| --ssl-cert | File that contains X.509 certificate | |
| --ssl-cipher | Permissible ciphers for connection encryption | |
| --ssl-crl | File that contains certificate revocation lists | 5.6.3 |
| --ssl-crlpath | Directory that contains certificate revocation-list files | 5.6.3 |
| --ssl-key | File that contains X.509 key | |
| --ssl-mode | Desired security state of connection to server | 5.6.30 |
| --ssl-verify-server-cert | Verify host name against server certificate Common Name identity | |
| --tab | Produce tab-separated data files | |
| --tables | Override --databases or -B option | |
| --triggers | Dump triggers for each dumped table | |
| --tz-utc | Add SET TIME_ZONE='+00:00' to dump file | |
| --user | MySQL user name to use when connecting to server | |
| --verbose | Verbose mode | |
| --version | Display version information and exit | |
| --where | Dump only rows selected by given WHERE condition | |
| --xml | Produce XML output |
Examples¶
To make a backup of an entire database:
mysqldump test > backup-test.sql -u root -p123456
To load the dump file back into the server:
mysql test < backup-test.sql -u root -p123456
Another way to reload the dump file:
mysql -e "source /data/mysqldump/backup-test.sql" test -u root -p123456
mysqldump is also very useful for populating databases by copying data from one MySQL server to another:
mysqldump --opt db_name | mysql --host=remote_host -C db_name
You can dump several databases with one command:
mysqldump --databases db_name1 [db_name2 ...] > my_databases.sql
To dump all databases, use the --all-databases option:
mysqldump --all-databases > all_databases.sql -u root -p123456
For InnoDB tables, mysqldump provides a way of making an online backup:
mysqldump --all-databases --master-data --single-transaction > all_databases.sql -u root -p123456
For point-in-time recovery (also known as “roll-forward,” when you need to restore an old backup and replay the changes that happened since that backup)
mysqldump --all-databases --master-data=2 > all_databases.sql -uroot -p123456
mysqldump --all-databases --flush-logs --master-data=2 all_databases.sql -uroot -p123456
Tips¶
mysqldump: Error: Binlogging on server not active
vi /usr/local/mysql/my.cnf
log_bin=mysql-bin