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MySQL 5.7 Reference Manual  /  ...  /  mysqlpump — A Database Backup Program

4.5.6 mysqlpump — A Database Backup Program

The mysqlpump client utility performs logical backups, producing a set of SQL statements that can be executed to reproduce the original database object definitions and table data. It dumps one or more MySQL databases for backup or transfer to another SQL server.

mysqlpump features include:

  • Parallel processing of databases, and of objects within databases, to speed up the dump process

  • Better control over which databases and database objects (tables, stored programs, user accounts) to dump

  • Dumping of user accounts as account-management statements (CREATE USER, GRANT) rather than as inserts into the mysql system database

  • Capability of creating compressed output

  • Progress indicator (the values are estimates)

  • For dump file reloading, faster secondary index creation for InnoDB tables by adding indexes after rows are inserted

mysqlpump requires at least the SELECT privilege for dumped tables, SHOW VIEW for dumped views, TRIGGER for dumped triggers, and LOCK TABLES if the --single-transaction option is not used. The SELECT privilege on the mysql system database is required to dump user definitions. Certain options might require other privileges as noted in the option descriptions.

To reload a dump file, you must have the privileges required to execute the statements that it contains, such as the appropriate CREATE privileges for objects created by those statements.

Note

A dump made using PowerShell on Windows with output redirection creates a file that has UTF-16 encoding:

mysqlpump [options] > dump.sql

However, UTF-16 is not permitted as a connection character set (see Section 10.4, “Connection Character Sets and Collations”), so the dump file does not load correctly. To work around this issue, use the --result-file option, which creates the output in ASCII format:

mysqlpump [options] --result-file=dump.sql

mysqlpump Invocation Syntax

By default, mysqlpump dumps all databases (with certain exceptions noted in mysqlpump Restrictions). To specify this behavior explicitly, use the --all-databases option:

mysqlpump --all-databases

To dump a single database, or certain tables within that database, name the database on the command line, optionally followed by table names:

mysqlpump db_name
mysqlpump db_name tbl_name1 tbl_name2 ...

To treat all name arguments as database names, use the --databases option:

mysqlpump --databases db_name1 db_name2 ...

By default, mysqlpump does not dump user account definitions, even if you dump the mysql system database that contains the grant tables. To dump grant table contents as logical definitions in the form of CREATE USER and GRANT statements, use the --users option and suppress all database dumping:

mysqlpump --exclude-databases=% --users

In the preceding command, % is a wildcard that matches all database names for the --exclude-databases option.

mysqlpump supports several options for including or excluding databases, tables, stored programs, and user definitions. See mysqlpump Object Selection.

To reload a dump file, execute the statements that it contains. For example, use the mysql client:

mysqlpump [options] > dump.sql
mysql < dump.sql

The following discussion provides additional mysqlpump usage examples.

To see a list of the options mysqlpump supports, issue the command mysqlpump --help.

mysqlpump Option Summary

mysqlpump supports the following options, which can be specified on the command line or in the [mysqlpump] and [client] groups of an option file. (Prior to MySQL 5.7.30, mysqlpump read the [mysql_dump] group rather than [mysqlpump]. As of 5.7.30, [mysql_dump] is still accepted but is deprecated.) For information about option files used by MySQL programs, see Section 4.2.2.2, “Using Option Files”.

Table 4.18 mysqlpump Options

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-user Add DROP USER statement before each CREATE USER statement
--add-locks Surround each table dump with LOCK TABLES and UNLOCK TABLES statements
--all-databases Dump all databases
--bind-address Use specified network interface to connect to MySQL Server
--character-sets-dir Directory where character sets are installed
--complete-insert Use complete INSERT statements that include column names
--compress Compress all information sent between client and server
--compress-output Output compression algorithm
--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
--default-parallelism Default number of threads for parallel processing
--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
--defer-table-indexes For reloading, defer index creation until after loading table rows
--events Dump events from dumped databases
--exclude-databases Databases to exclude from dump
--exclude-events Events to exclude from dump
--exclude-routines Routines to exclude from dump
--exclude-tables Tables to exclude from dump
--exclude-triggers Triggers to exclude from dump
--exclude-users Users to exclude from dump
--extended-insert Use multiple-row INSERT syntax
--get-server-public-key Request RSA public key from server 5.7.23
--help Display help message and exit
--hex-blob Dump binary columns using hexadecimal notation
--host Host on which MySQL server is located
--include-databases Databases to include in dump
--include-events Events to include in dump
--include-routines Routines to include in dump
--include-tables Tables to include in dump
--include-triggers Triggers to include in dump
--include-users Users to include in dump
--insert-ignore Write INSERT IGNORE rather than INSERT statements
--log-error-file Append warnings and errors to named file
--login-path Read login path options from .mylogin.cnf
--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-create-db Do not write CREATE DATABASE statements
--no-create-info Do not write CREATE TABLE statements that re-create each dumped table
--no-defaults Read no option files
--parallel-schemas Specify schema-processing parallelism
--password Password to use when connecting to server
--plugin-dir Directory where plugins are installed
--port TCP/IP port number for connection
--print-defaults Print default options
--protocol Transport protocol to use
--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
--server-public-key-path Path name to file containing RSA public key 5.7.23
--set-charset Add SET NAMES default_character_set to output
--set-gtid-purged Whether to add SET @@GLOBAL.GTID_PURGED to output 5.7.18
--single-transaction Dump tables within single transaction
--skip-definer Omit DEFINER and SQL SECURITY clauses from view and stored program CREATE statements
--skip-dump-rows Do not dump table rows
--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
--ssl-crlpath Directory that contains certificate revocation-list files
--ssl-key File that contains X.509 key
--ssl-mode Desired security state of connection to server 5.7.11
--ssl-verify-server-cert Verify host name against server certificate Common Name identity
--tls-version Permissible TLS protocols for encrypted connections 5.7.10
--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
--users Dump user accounts
--version Display version information and exit
--watch-progress Display progress indicator

mysqlpump Option Descriptions

  • --help, -?

    Command-Line Format --help

    Display a help message and exit.

  • --add-drop-database

    Command-Line Format --add-drop-database

    Write a DROP DATABASE statement before each CREATE DATABASE statement.

  • --add-drop-table

    Command-Line Format --add-drop-table

    Write a DROP TABLE statement before each CREATE TABLE statement.

  • --add-drop-user

    Command-Line Format --add-drop-user

    Write a DROP USER statement before each CREATE USER statement.

  • --add-locks

    Command-Line Format --add-locks

    Surround each table dump with LOCK TABLES and UNLOCK TABLES statements. This results in faster inserts when the dump file is reloaded. See Section 8.2.4.1, “Optimizing INSERT Statements”.

    This option does not work with parallelism because INSERT statements from different tables can be interleaved and UNLOCK TABLES following the end of the inserts for one table could release locks on tables for which inserts remain.

    --add-locks and --single-transaction are mutually exclusive.

  • --all-databases, -A

    Command-Line Format --all-databases

    Dump all databases (with certain exceptions noted in mysqlpump Restrictions). This is the default behavior if no other is specified explicitly.

    --all-databases and --databases are mutually exclusive.

  • --bind-address=ip_address

    Command-Line Format --bind-address=ip_address

    On a computer having multiple network interfaces, use this option to select which interface to use for connecting to the MySQL server.

  • --character-sets-dir=path

    Command-Line Format --character-sets-dir=dir_name
    Type Directory name

    The directory where character sets are installed. See Section 10.15, “Character Set Configuration”.

  • --complete-insert

    Command-Line Format --complete-insert

    Write complete INSERT statements that include column names.

  • --compress, -C

    Command-Line Format --compress[={OFF|ON}]
    Type Boolean
    Default Value OFF

    Compress all information sent between the client and the server if possible. See Section 4.2.6, “Connection Compression Control”.

  • --compress-output=algorithm

    Command-Line Format --compress-output=algorithm
    Type Enumeration
    Valid Values

    LZ4

    ZLIB

    By default, mysqlpump does not compress output. This option specifies output compression using the specified algorithm. Permitted algorithms are LZ4 and ZLIB.

    To uncompress compressed output, you must have an appropriate utility. If the system commands lz4 and openssl zlib are not available, as of MySQL 5.7.10, MySQL distributions include lz4_decompress and zlib_decompress utilities that can be used to decompress mysqlpump output that was compressed using the --compress-output=LZ4 and --compress-output=ZLIB options. For more information, see Section 4.8.1, “lz4_decompress — Decompress mysqlpump LZ4-Compressed Output”, and Section 4.8.5, “zlib_decompress — Decompress mysqlpump ZLIB-Compressed Output”.

    Alternatives include the lz4 and openssl commands, if they are installed on your system. For example, lz4 can uncompress LZ4 output:

    lz4 -d input_file output_file

    ZLIB output can be uncompresed like this:

    openssl zlib -d < input_file > output_file
  • --databases, -B

    Command-Line Format --databases

    Normally, mysqlpump treats the first name argument on the command line as a database name and any following names as table names. With this option, it treats all name arguments as database names. CREATE DATABASE statements are included in the output before each new database.

    --all-databases and --databases are mutually exclusive.

  • --debug[=debug_options], -# [debug_options]

    Command-Line Format --debug[=debug_options]
    Type String
    Default Value d:t:O,/tmp/mysqlpump.trace

    Write a debugging log. A typical debug_options string is d:t:o,file_name. The default is d:t:O,/tmp/mysqlpump.trace.

    This option is available only if MySQL was built using WITH_DEBUG. MySQL release binaries provided by Oracle are not built using this option.

  • --debug-check

    Command-Line Format --debug-check
    Type Boolean
    Default Value FALSE

    Print some debugging information when the program exits.

    This option is available only if MySQL was built using WITH_DEBUG. MySQL release binaries provided by Oracle are not built using this option.

  • --debug-info, -T

    Command-Line Format --debug-info
    Type Boolean
    Default Value FALSE

    Print debugging information and memory and CPU usage statistics when the program exits.

    This option is available only if MySQL was built using WITH_DEBUG. MySQL release binaries provided by Oracle are not built using this option.

  • --default-auth=plugin

    Command-Line Format --default-auth=plugin
    Type String

    A hint about which client-side authentication plugin to use. See Section 6.2.13, “Pluggable Authentication”.

  • --default-character-set=charset_name

    Command-Line Format --default-character-set=charset_name
    Type String
    Default Value utf8

    Use charset_name as the default character set. See Section 10.15, “Character Set Configuration”. If no character set is specified, mysqlpump uses utf8.

  • --default-parallelism=N

    Command-Line Format --default-parallelism=N
    Type Integer
    Default Value 2

    The default number of threads for each parallel processing queue. The default is 2.

    The --parallel-schemas option also affects parallelism and can be used to override the default number of threads. For more information, see mysqlpump Parallel Processing.

    With --default-parallelism=0 and no --parallel-schemas options, mysqlpump runs as a single-threaded process and creates no queues.

    With parallelism enabled, it is possible for output from different databases to be interleaved.

    Note

    Before MySQL 5.7.11, use of the --single-transaction option is mutually exclusive with parallelism. To use --single-transaction, disable parallelism by setting --default-parallelism to 0 and not using any instances of --parallel-schemas:

    mysqlpump --single-transaction --default-parallelism=0
  • --defaults-extra-file=file_name

    Command-Line Format --defaults-extra-file=file_name
    Type File name

    Read this option file after the global option file but (on Unix) before the user option file. If the file does not exist or is otherwise inaccessible, an error occurs. If file_name is not an absolute path name, it is interpreted relative to the current directory.

    For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.

  • --defaults-file=file_name

    Command-Line Format --defaults-file=file_name
    Type File name

    Use only the given option file. If the file does not exist or is otherwise inaccessible, an error occurs. If file_name is not an absolute path name, it is interpreted relative to the current directory.

    Exception: Even with --defaults-file, client programs read .mylogin.cnf.

    For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.

  • --defaults-group-suffix=str

    Command-Line Format --defaults-group-suffix=str
    Type String

    Read not only the usual option groups, but also groups with the usual names and a suffix of str. For example, mysqlpump normally reads the [client] and [mysqlpump] groups. If this option is given as --defaults-group-suffix=_other, mysqlpump also reads the [client_other] and [mysqlpump_other] groups.

    For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.

  • --defer-table-indexes

    Command-Line Format --defer-table-indexes
    Type Boolean
    Default Value TRUE

    In the dump output, defer index creation for each table until after its rows have been loaded. This works for all storage engines, but for InnoDB applies only for secondary indexes.

    This option is enabled by default; use --skip-defer-table-indexes to disable it.

  • --events

    Command-Line Format --events
    Type Boolean
    Default Value TRUE

    Include Event Scheduler events for the dumped databases in the output. Event dumping requires the EVENT privileges for those databases.

    The output generated by using --events contains CREATE EVENT statements to create the events. However, these statements do not include attributes such as the event creation and modification timestamps, so when the events are reloaded, they are created with timestamps equal to the reload time.

    If you require events to be created with their original timestamp attributes, do not use --events. Instead, dump and reload the contents of the mysql.event table directly, using a MySQL account that has appropriate privileges for the mysql database.

    This option is enabled by default; use --skip-events to disable it.

  • --exclude-databases=db_list

    Command-Line Format --exclude-databases=db_list
    Type String

    Do not dump the databases in db_list, which is a list of one or more comma-separated database names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --exclude-events=event_list

    Command-Line Format --exclude-events=event_list
    Type String

    Do not dump the databases in event_list, which is a list of one or more comma-separated event names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --exclude-routines=routine_list

    Command-Line Format --exclude-routines=routine_list
    Type String

    Do not dump the events in routine_list, which is a list of one or more comma-separated routine (stored procedure or function) names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --exclude-tables=table_list

    Command-Line Format --exclude-tables=table_list
    Type String

    Do not dump the tables in table_list, which is a list of one or more comma-separated table names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --exclude-triggers=trigger_list

    Command-Line Format --exclude-triggers=trigger_list
    Type String

    Do not dump the triggers in trigger_list, which is a list of one or more comma-separated trigger names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --exclude-users=user_list

    Command-Line Format --exclude-users=user_list
    Type String

    Do not dump the user accounts in user_list, which is a list of one or more comma-separated account names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --extended-insert=N

    Command-Line Format --extended-insert=N

    Write INSERT statements using multiple-row syntax that includes several VALUES lists. This results in a smaller dump file and speeds up inserts when the file is reloaded.

    The option value indicates the number of rows to include in each INSERT statement. The default is 250. A value of 1 produces one INSERT statement per table row.

  • --get-server-public-key

    Command-Line Format --get-server-public-key
    Introduced 5.7.23
    Type Boolean

    Request from the server the public key required for RSA key pair-based password exchange. This option applies to clients that authenticate with the caching_sha2_password authentication plugin. For that plugin, the server does not send the public key unless requested. This option is ignored for accounts that do not authenticate with that plugin. It is also ignored if RSA-based password exchange is not used, as is the case when the client connects to the server using a secure connection.

    If --server-public-key-path=file_name is given and specifies a valid public key file, it takes precedence over --get-server-public-key.

    For information about the caching_sha2_password plugin, see Section 6.4.1.4, “Caching SHA-2 Pluggable Authentication”.

    The --get-server-public-key option was added in MySQL 5.7.23.

  • --hex-blob

    Command-Line Format --hex-blob

    Dump binary columns using hexadecimal notation (for example, 'abc' becomes 0x616263). The affected data types are BINARY, VARBINARY, BLOB types, BIT, all spatial data types, and other non-binary data types when used with the binary character set.

  • --host=host_name, -h host_name

    Command-Line Format --host

    Dump data from the MySQL server on the given host.

  • --include-databases=db_list

    Command-Line Format --include-databases=db_list
    Type String

    Dump the databases in db_list, which is a list of one or more comma-separated database names. The dump includes all objects in the named databases. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --include-events=event_list

    Command-Line Format --include-events=event_list
    Type String

    Dump the events in event_list, which is a list of one or more comma-separated event names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --include-routines=routine_list

    Command-Line Format --include-routines=routine_list
    Type String

    Dump the routines in routine_list, which is a list of one or more comma-separated routine (stored procedure or function) names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --include-tables=table_list

    Command-Line Format --include-tables=table_list
    Type String

    Dump the tables in table_list, which is a list of one or more comma-separated table names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --include-triggers=trigger_list

    Command-Line Format --include-triggers=trigger_list
    Type String

    Dump the triggers in trigger_list, which is a list of one or more comma-separated trigger names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --include-users=user_list

    Command-Line Format --include-users=user_list
    Type String

    Dump the user accounts in user_list, which is a list of one or more comma-separated user names. Multiple instances of this option are additive. For more information, see mysqlpump Object Selection.

  • --insert-ignore

    Command-Line Format --insert-ignore

    Write INSERT IGNORE statements rather than INSERT statements.

  • --log-error-file=file_name

    Command-Line Format --log-error-file=file_name
    Type File name

    Log warnings and errors by appending them to the named file. If this option is not given, mysqlpump writes warnings and errors to the standard error output.

  • --login-path=name

    Command-Line Format --login-path=name
    Type String

    Read options from the named login path in the .mylogin.cnf login path file. A login path is an option group containing options that specify which MySQL server to connect to and which account to authenticate as. To create or modify a login path file, use the mysql_config_editor utility. See Section 4.6.6, “mysql_config_editor — MySQL Configuration Utility”.

    For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.

  • --max-allowed-packet=N

    Command-Line Format --max-allowed-packet=N
    Type Numeric
    Default Value 25165824

    The maximum size of the buffer for client/server communication. The default is 24MB, the maximum is 1GB.

  • --net-buffer-length=N

    Command-Line Format --net-buffer-length=N
    Type Numeric
    Default Value 1047552

    The initial size of the buffer for client/server communication. When creating multiple-row INSERT statements (as with the --extended-insert option), mysqlpump creates rows up to N bytes long. If you use this option to increase the value, ensure that the MySQL server net_buffer_length system variable has a value at least this large.

  • --no-create-db

    Command-Line Format --no-create-db

    Suppress any CREATE DATABASE statements that might otherwise be included in the output.

  • --no-create-info, -t

    Command-Line Format --no-create-info

    Do not write CREATE TABLE statements that create each dumped table.

  • --no-defaults

    Command-Line Format --no-defaults

    Do not read any option files. If program startup fails due to reading unknown options from an option file, --no-defaults can be used to prevent them from being read.

    The exception is that the .mylogin.cnf file is read in all cases, if it exists. This permits passwords to be specified in a safer way than on the command line even when --no-defaults is used. To create .mylogin.cnf, use the mysql_config_editor utility. See Section 4.6.6, “mysql_config_editor — MySQL Configuration Utility”.

    For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.

  • --parallel-schemas=[N:]db_list

    Command-Line Format --parallel-schemas=[N:]schema_list
    Type String

    Create a queue for processing the databases in db_list, which is a list of one or more comma-separated database names. If N is given, the queue uses N threads. If N is not given, the --default-parallelism option determines the number of queue threads.

    Multiple instances of this option create multiple queues. mysqlpump also creates a default queue to use for databases not named in any --parallel-schemas option, and for dumping user definitions if command options select them. For more information, see mysqlpump Parallel Processing.

  • --password[=password], -p[password]

    Command-Line Format --password[=password]
    Type String

    The password of the MySQL account used for connecting to the server. The password value is optional. If not given, mysqlpump prompts for one. If given, there must be no space between --password= or -p and the password following it. If no password option is specified, the default is to send no password.

    Specifying a password on the command line should be considered insecure. To avoid giving the password on the command line, use an option file. See Section 6.1.2.1, “End-User Guidelines for Password Security”.

    To explicitly specify that there is no password and that mysqlpump should not prompt for one, use the --skip-password option.

  • --plugin-dir=dir_name

    Command-Line Format --plugin-dir=dir_name
    Type Directory name

    The directory in which to look for plugins. Specify this option if the --default-auth option is used to specify an authentication plugin but mysqlpump does not find it. See Section 6.2.13, “Pluggable Authentication”.

  • --port=port_num, -P port_num

    Command-Line Format --port=port_num
    Type Numeric
    Default Value 3306

    For TCP/IP connections, the port number to use.

  • --print-defaults

    Command-Line Format --print-defaults

    Print the program name and all options that it gets from option files.

    For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.

  • --protocol={TCP|SOCKET|PIPE|MEMORY}

    Command-Line Format --protocol=type
    Type String
    Default Value [see text]
    Valid Values

    TCP

    SOCKET

    PIPE

    MEMORY

    The transport protocol to use for connecting to the server. It is useful when the other connection parameters normally result in use of a protocol other than the one you want. For details on the permissible values, see Section 4.2.5, “Connection Transport Protocols”.

  • --replace

    Command-Line Format --replace

    Write REPLACE statements rather than INSERT statements.

  • --result-file=file_name

    Command-Line Format --result-file=file_name
    Type File name

    Direct output to the named file. The result file is created and its previous contents overwritten, even if an error occurs while generating the dump.

    This option should be used on Windows to prevent newline \n characters from being converted to \r\n carriage return/newline sequences.

  • --routines

    Command-Line Format --routines
    Type Boolean
    Default Value TRUE

    Include stored routines (procedures and functions) for the dumped databases in the output. This option requires the SELECT privilege for the mysql.proc table.

    The output generated by using --routines contains CREATE PROCEDURE and CREATE FUNCTION statements to create the routines. However, these statements do not include attributes such as the routine creation and modification timestamps, so when the routines are reloaded, they are created with timestamps equal to the reload time.

    If you require routines to be created with their original timestamp attributes, do not use --routines. Instead, dump and reload the contents of the mysql.proc table directly, using a MySQL account that has appropriate privileges for the mysql database.

    This option is enabled by default; use --skip-routines to disable it.

  • --secure-auth

    Command-Line Format --secure-auth

    Do not send passwords to the server in old (pre-4.1) format. This prevents connections except for servers that use the newer password format.

    This option is deprecated; expect it to be removed in a future MySQL release. It is always enabled and attempting to disable it (--skip-secure-auth, --secure-auth=0) produces an error.

  • --server-public-key-path=file_name

    Command-Line Format --server-public-key-path=file_name
    Introduced 5.7.23
    Type File name

    The path name to a file in PEM format containing a client-side copy of the public key required by the server for RSA key pair-based password exchange. This option applies to clients that authenticate with the sha256_password or caching_sha2_password authentication plugin. This option is ignored for accounts that do not authenticate with one of those plugins. It is also ignored if RSA-based password exchange is not used, as is the case when the client connects to the server using a secure connection.

    If --server-public-key-path=file_name is given and specifies a valid public key file, it takes precedence over --get-server-public-key.

    For sha256_password, this option applies only if MySQL was built using OpenSSL.

    For information about the sha256_password and caching_sha2_password plugins, see Section 6.4.1.5, “SHA-256 Pluggable Authentication”, and Section 6.4.1.4, “Caching SHA-2 Pluggable Authentication”.

    The --server-public-key-path option was added in MySQL 5.7.23.

  • --set-charset

    Command-Line Format --set-charset

    Write SET NAMES default_character_set to the output.

    This option is enabled by default. To disable it and suppress the SET NAMES statement, use --skip-set-charset.

  • --set-gtid-purged=value

    Command-Line Format --set-gtid-purged=value
    Introduced 5.7.18
    Type Enumeration
    Default Value AUTO
    Valid Values

    OFF

    ON

    AUTO

    This option enables control over global transaction ID (GTID) information written to the dump file, by indicating whether to add a SET @@GLOBAL.gtid_purged statement to the output. This option may also cause a statement to be written to the output that disables binary logging while the dump file is being reloaded.

    The following table shows the permitted option values. The default value is AUTO.

    Value Meaning
    OFF Add no SET statement to the output.
    ON Add a SET statement to the output. An error occurs if GTIDs are not enabled on the server.
    AUTO Add a SET statement to the output if GTIDs are enabled on the server.

    The --set-gtid-purged option has the following effect on binary logging when the dump file is reloaded:

    • --set-gtid-purged=OFF: SET @@SESSION.SQL_LOG_BIN=0; is not added to the output.

    • --set-gtid-purged=ON: SET @@SESSION.SQL_LOG_BIN=0; is added to the output.

    • --set-gtid-purged=AUTO: SET @@SESSION.SQL_LOG_BIN=0; is added to the output if GTIDs are enabled on the server you are backing up (that is, if AUTO evaluates to ON).

    This option was added in MySQL 5.7.18.

  • --single-transaction

    Command-Line Format --single-transaction

    This option sets the transaction isolation mode to REPEATABLE READ and sends a START TRANSACTION SQL statement to the server before dumping data. It is useful only with transactional tables such as InnoDB, because then it dumps the consistent state of the database at the time when START TRANSACTION was issued without blocking any applications.

    When using this option, you should keep in mind that only InnoDB tables are dumped in a consistent state. For example, any MyISAM or MEMORY tables dumped while using this option may still change state.

    While a --single-transaction dump is in process, to ensure a valid dump file (correct table contents and binary log coordinates), no other connection should use the following statements: ALTER TABLE, CREATE TABLE, DROP TABLE, RENAME TABLE, TRUNCATE TABLE. A consistent read is not isolated from those statements, so use of them on a table to be dumped can cause the SELECT that is performed by mysqlpump to retrieve the table contents to obtain incorrect contents or fail.

    --add-locks and --single-transaction are mutually exclusive.

    Note

    Before MySQL 5.7.11, use of the --single-transaction option is mutually exclusive with parallelism. To use --single-transaction, disable parallelism by setting --default-parallelism to 0 and not using any instances of --parallel-schemas:

    mysqlpump --single-transaction --default-parallelism=0
  • --skip-definer

    Command-Line Format --skip-definer
    Type Boolean
    Default Value FALSE

    Omit DEFINER and SQL SECURITY clauses from the CREATE statements for views and stored programs. The dump file, when reloaded, creates objects that use the default DEFINER and SQL SECURITY values. See Section 23.6, “Stored Object Access Control”.

  • --skip-dump-rows, -d

    Command-Line Format --skip-dump-rows
    Type Boolean
    Default Value FALSE

    Do not dump table rows.

  • --socket=path, -S path

    Command-Line Format --socket={file_name|pipe_name}
    Type String

    For connections to localhost, the Unix socket file to use, or, on Windows, the name of the named pipe to use.

    On Windows, this option applies only if the server was started with the named_pipe system variable enabled to support named-pipe connections. In addition, the user making the connection must be a member of the Windows group specified by the named_pipe_full_access_group system variable.

  • --ssl*

    Options that begin with --ssl specify whether to connect to the server using encryption and indicate where to find SSL keys and certificates. See Command Options for Encrypted Connections.

  • --tls-version=protocol_list

    Command-Line Format --tls-version=protocol_list
    Introduced 5.7.10
    Type String
    Default Value (≥ 5.7.28) TLSv1,TLSv1.1,TLSv1.2
    Default Value (≤ 5.7.27)

    TLSv1,TLSv1.1,TLSv1.2 (OpenSSL)

    TLSv1,TLSv1.1 (yaSSL)

    The permissible TLS protocols for encrypted connections. The value is a list of one or more comma-separated protocol names. The protocols that can be named for this option depend on the SSL library used to compile MySQL. For details, see Section 6.3.2, “Encrypted Connection TLS Protocols and Ciphers”.

    This option was added in MySQL 5.7.10.

  • --triggers

    Command-Line Format --triggers
    Type Boolean
    Default Value TRUE

    Include triggers for each dumped table in the output.

    This option is enabled by default; use --skip-triggers to disable it.

  • --tz-utc

    Command-Line Format --tz-utc

    This option enables TIMESTAMP columns to be dumped and reloaded between servers in different time zones. mysqlpump sets its connection time zone to UTC and adds SET TIME_ZONE='+00:00' to the dump file. Without this option, TIMESTAMP columns are dumped and reloaded in the time zones local to the source and destination servers, which can cause the values to change if the servers are in different time zones. --tz-utc also protects against changes due to daylight saving time.

    This option is enabled by default; use --skip-tz-utc to disable it.

  • --user=user_name, -u user_name

    Command-Line Format --user=user_name
    Type String

    The user name of the MySQL account to use for connecting to the server.

  • --users

    Command-Line Format --users
    Type Boolean
    Default Value FALSE

    Dump user accounts as logical definitions in the form of CREATE USER and GRANT statements.

    User definitions are stored in the grant tables in the mysql system database. By default, mysqlpump does not include the grant tables in mysql database dumps. To dump the contents of the grant tables as logical definitions, use the --users option and suppress all database dumping:

    mysqlpump --exclude-databases=% --users
  • --version, -V

    Command-Line Format --version

    Display version information and exit.

  • --watch-progress

    Command-Line Format --watch-progress
    Type Boolean
    Default Value TRUE

    Periodically display a progress indicator that provides information about the completed and total number of tables, rows, and other objects.

    This option is enabled by default; use --skip-watch-progress to disable it.

mysqlpump Object Selection

mysqlpump has a set of inclusion and exclusion options that enable filtering of several object types and provide flexible control over which objects to dump:

Any inclusion or exclusion option may be given multiple times. The effect is additive. Order of these options does not matter.

The value of each inclusion and exclusion option is a list of comma-separated names of the appropriate object type. For example:

--exclude-databases=test,world
--include-tables=customer,invoice

Wildcard characters are permitted in the object names:

  • % matches any sequence of zero or more characters.

  • _ matches any single character.

For example, --include-tables=t%,__tmp matches all table names that begin with t and all five-character table names that end with tmp.

For users, a name specified without a host part is interpreted with an implied host of %. For example, u1 and u1@% are equivalent. This is the same equivalence that applies in MySQL generally (see Section 6.2.4, “Specifying Account Names”).

Inclusion and exclusion options interact as follows:

  • By default, with no inclusion or exclusion options, mysqlpump dumps all databases (with certain exceptions noted in mysqlpump Restrictions).

  • If inclusion options are given in the absence of exclusion options, only the objects named as included are dumped.

  • If exclusion options are given in the absence of inclusion options, all objects are dumped except those named as excluded.

  • If inclusion and exclusion options are given, all objects named as excluded and not named as included are not dumped. All other objects are dumped.

If multiple databases are being dumped, it is possible to name tables, triggers, and routines in a specific database by qualifying the object names with the database name. The following command dumps databases db1 and db2, but excludes tables db1.t1 and db2.t2:

mysqlpump --include-databases=db1,db2 --exclude-tables=db1.t1,db2.t2

The following options provide alternative ways to specify which databases to dump:

mysqlpump Parallel Processing

mysqlpump can use parallelism to achieve concurrent processing. You can select concurrency between databases (to dump multiple databases simultaneously) and within databases (to dump multiple objects from a given database simultaneously).

By default, mysqlpump sets up one queue with two threads. You can create additional queues and control the number of threads assigned to each one, including the default queue:

  • --default-parallelism=N specifies the default number of threads used for each queue. In the absence of this option, N is 2.

    The default queue always uses the default number of threads. Additional queues use the default number of threads unless you specify otherwise.

  • --parallel-schemas=[N:]db_list sets up a processing queue for dumping the databases named in db_list and optionally specifies how many threads the queue uses. db_list is a list of comma-separated database names. If the option argument begins with N:, the queue uses N threads. Otherwise, the --default-parallelism option determines the number of queue threads.

    Multiple instances of the --parallel-schemas option create multiple queues.

    Names in the database list are permitted to contain the same % and _ wildcard characters supported for filtering options (see mysqlpump Object Selection).

mysqlpump uses the default queue for processing any databases not named explicitly with a --parallel-schemas option, and for dumping user definitions if command options select them.

In general, with multiple queues, mysqlpump uses parallelism between the sets of databases processed by the queues, to dump multiple databases simultaneously. For a queue that uses multiple threads, mysqlpump uses parallelism within databases, to dump multiple objects from a given database simultaneously. Exceptions can occur; for example, mysqlpump may block queues while it obtains from the server lists of objects in databases.

With parallelism enabled, it is possible for output from different databases to be interleaved. For example, INSERT statements from multiple tables dumped in parallel can be interleaved; the statements are not written in any particular order. This does not affect reloading because output statements qualify object names with database names or are preceded by USE statements as required.

The granularity for parallelism is a single database object. For example, a single table cannot be dumped in parallel using multiple threads.

Examples:

mysqlpump --parallel-schemas=db1,db2 --parallel-schemas=db3

mysqlpump sets up a queue to process db1 and db2, another queue to process db3, and a default queue to process all other databases. All queues use two threads.

mysqlpump --parallel-schemas=db1,db2 --parallel-schemas=db3
          --default-parallelism=4

This is the same as the previous example except that all queues use four threads.

mysqlpump --parallel-schemas=5:db1,db2 --parallel-schemas=3:db3

The queue for db1 and db2 uses five threads, the queue for db3 uses three threads, and the default queue uses the default of two threads.

As a special case, with --default-parallelism=0 and no --parallel-schemas options, mysqlpump runs as a single-threaded process and creates no queues.

Note

Before MySQL 5.7.11, use of the --single-transaction option is mutually exclusive with parallelism. To use --single-transaction, disable parallelism by setting --default-parallelism to 0 and not using any instances of --parallel-schemas:

mysqlpump --single-transaction --default-parallelism=0

mysqlpump Restrictions

mysqlpump does not dump the INFORMATION_SCHEMA, performance_schema, ndbinfo, or sys schema by default. To dump any of these, name them explicitly on the command line. You can also name them with the --databases or --include-databases option.

mysqlpump does not dump InnoDB CREATE TABLESPACE statements.

mysqlpump dumps user accounts in logical form using CREATE USER and GRANT statements (for example, when you use the --include-users or --users option). For this reason, dumps of the mysql system database do not by default include the grant tables that contain user definitions: user, db, tables_priv, columns_priv, procs_priv, or proxies_priv. To dump any of the grant tables, name the mysql database followed by the table names:

mysqlpump mysql user db ...