Questions tagged [mysqldump]

MySQL's Standard Dump/Backup Utility

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mysqldump generating inconsistent dumps

I cannot get mysqldump to generate a dump that will properly restore. The dump is being generated to setup a new slave, but whenever the slave starts up, it gets foreign key constraint failures. I'm ...
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Why does PhpMyAdmin put the idexes at the end of a dump?

When I export a MySQL database with Adminer or with mysqldump, it produces a .sql file with each table definition followed by (if the table is non-empty) an INSERT statement (or multiple statements ...
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mysqldump waiting for table fush for long time

MySQL version: MySQL Commercial 8.0.16 OS: RHEL 7.6 Following is my mysqldump command mysqldump --defaults-extra-file=/mysql_data/config/extra_options.cnf --single-transaction --flush-logs --master-...
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51 views

mysqldump not importing all tables in dump file

Today I faced strange error on mysql databases. I had a replication server suddenly my replication server crashed and thatswhy I installed mysql to new server then I installed mysql. I get backup show ...
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mysqldump still fails even with mysqldump --column-statistics=0

mysqldump still fails even when using mysqldump --column-statistics=0 # mysqldump --column-statistics=0 Just returns # mysqldump: [ERROR] unknown variable 'column-statistics=0' Am I missing ...
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Incomplete MysqlDump Files - Mysqldump Inside For Loop

I am running a Windows 10 Machine with WAMP installed. I have also a Git Bash Installed. I was trying to backup all my databases in each separate file using the code below. for DB in $(mysql -uroot ...
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51 views

Migrate large (200GB) mysql databases to new hosts with as little downtime as possible

My question is about migrating large amounts of MySQL data with as little downtime as possible. I have 3 MySQL databases that need to be moved from one RDS instance inside a VPC into a brand new AWS ...
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31 views

Intentionally slow down importing of (Percona) MySQL 5.7 dump

I need to move a very large MySQL table (250M rows, 120 columns. 120GB of data, 310GB of index) from one database instance to another (on AWS). For reasons beyond the scope of this question, this is ...
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28 views

mysqldump large innodb tables - only importing small number of records

I've inherited a website I didn't originally build. The database includes a users and a bookings table both of which are relatively large (innodb) tables. I'm trying to download a copy of the ...
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35 views

Can I use a mariadb/mysql dump from older version in newer version?

I'm a mariadb/mysql newbie. I want to take a complete backup. Apparently this is the way (please correct me if I'm wrong): mysqldump \ -h... -u... -p... \ --hex-blob --routines --triggers \ --...
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mysql - cancel source call

I want to cancel calling a source file on a mysql server which includes an enormous amount of data. It appears to be a sqldump that is broken into many small updates for many tables. First I tried ...
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31 views

Using mysqldump with WHERE clause but WHERE clause only applying to specific table? [closed]

This question is related to a question I posted on another StackExchange site. Question: How to apply the --where argument only to a specific table when mysqldump-ing a whole database? So I have a ...
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40 views

Import a large MySQL dump 68GB on RDS instance

I tried to import a large MySQL dump.sql (68GB) on RDS AWS instance MySQL 8.0 (db.t3.2xlarge: 32GB RAM). The import takes more than six hours: More than 500 tables I have 2 large tables: the first ...
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22 views

MariaDB mysqldump lacks all data - how do I force including it?

for years I've been using mysqldump without much trouble. Recently I joined a project that is using "MySQL dump 10.14 Distrib 5.5.52-MariaDB, for Linux (x86_64)" and when I attempt to do a dump it ...
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148 views

mysql to mariadb: unknown collation utf8mb4_0900_ai_ci

I have a mysql 8.0 that I exported using mysqldump. I am trying to import it onto a Mariadb 10.4 database with phpmyadmin, both are the most current versions. Each time I do it though, I get: Error: ...
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37 views

mysqldump is ignoring option '--databases' due to invalid value

I have this MySQL database named capsule_corporation_database. Then, I have this my.cnf file in my home directory: ~/.my.cnf [client] host=localhost user=trunks password=mai database=...
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Database synchronization 2 times a day -MariaDB

I have 2 different servers. The first one is server1 and the other is server2. On servers, one works for websites (server1) and the other for mobile applications (server2) for security purposes. I ...
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Using MySQL binary logs to keep backups between database dumps?

I currently take a full database backup using mysqldump once a day. I'd like to make this more granular (e.g. every 15 minutes), but can't just take more full dumps due to size constraints. Can I use ...
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Are `--events` and `--routines` really needed to get a `mysqldump --all-databases` of an entire mysql instance?

Several fine answers on here have already exquisitely argued that mysqldump --hex-blob --events --routines --triggers [...] --all-databases should be all - modulo storage-engine considerations - ...
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34 views

Does a MySQL dump that contains triggers double data on import?

I have a quick and simple question to clarify. I have medium sized database (400 Gigs) running in MariaDB 10.2 with lots of tables and lots of triggers as well. I am planning to take a mysqldump and ...
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18 views

Possible issues dumping a legacy MySQL 5.0 database to a local MariaDB 10.2 for develpment?

I've inherited a site that uses MySQL 5.0 and want to get a development version up and running with the existing data on my local (OS X) machine where I have MariaDB 10.2 but the compatibility tables ...
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47 views

mysqldump can write to /tmp and /var/tmp but nowhere else

I have various mysql databases on different servers and at different versions. I'm using the same mysqldump command across Linux versions without issue except for this new Red Hat 7.6 server. Command:...
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122 views

Incomplete dumps using mysqldump

I am running Mysql server with master and slave replication. From past few days i found that backups on my master server are incomplete. When i ran manually on master it's returning the below error ...
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146 views

Error Unknown command '\U' when restoring MySQL dump on Windows

I am updating software that used MySQL 5.4.3 in its old version, and now uses MariaDB 10.2.11. So, I dumped the old data with that command: mysqldump -uroot -p --no-create-info --skip-triggers --...
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Restoring a mysqldump loses user privileges for routines?

When I try and restore a mysqldump, the user privileges against some routines are missing. From what I can tell that is happeneing the routines that are in schemas that are loaded after the mysql ...
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mariadb import - all rows missing except those in final INSERT of InnoDB tables

This is a very strange bug. I'm using this on a mac: mysql Ver 15.1 Distrib 10.4.6-MariaDB, for osx10.13 (x86_64) If I import an SQL dump of a WordPress DB (so not very complicated structure, but ...
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39 views

Mysqldump is not exporting the full table (phpmyadmin and sqlyog neither)

When I export the table from PhpMyAdmin it downloads a .sql file with just a small part of the database (like 2 or 3% my table is 84M rows) I have tried with SQLYog and mysqldump with a similar result....
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296 views

Error: ERROR 1047 (08S01) at line 6955: WSREP has not yet prepared node for application use

While restoring a dump from a CloudSQL instance into a node of a Percona xtradb cluster, I am getting this error. The line 6955 in the .sql dump file is in bold below: DROP TABLE IF EXISTS `...
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71 views

how to dump via mysqldump hugh table into chunks

i have very hugh table , around 100 M records and 100 GB in a dump file , when i try to restore it it to a different DB i get sql query lost connection , i want to try and dump this table into chunks ...
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mysqlpump --set-gtid-purged=OFF still adds @SESSION.SQL_LOG_BIN=0;

Whenever I add --set-gtid-purged=OFF, it still adds @@SESSION.SQL_LOG_BIN=0; to the output. According to the documentation, shouldn't it get removed? --set-gtid-purged=OFF: SET @@SESSION.SQL_LOG_BIN=...
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68 views

How to MySQLDump with For Channel to set up multi-source replication?

I'm trying to set up multi-source replication. But, when I try and import the second database I get the error: ERROR 3079 (HY000) at line 28: Multiple channels exist on the slave. Please provide ...
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37 views

Does MySQLDump Verify the backup as restorable

I have written a PowerShell script to use MySQL dump to perform full backups of a specific database at a specific time. I am wondering if I need to confirm the backup is restorable via my script or ...
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Backing up and restoring all databases in MySQL on linux

I plan to dump all databases on one computer and restore them on another using the following 2 commands:- mysqldump -u username -p --all-databases > dump.sql mysql -u username -p < dump.sql ...
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All rows not being exported in MySQL dump

I have a MySQL instance (5.7) which is just a single instance. It is not setup to have slaves/replicate. I've updated my stack to have slaves. In the process of moving to this newer stack, I needed to ...
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209 views

How to take mysqldump with Generated column?

I am getting below error while importing the dump, ERROR 3105 (HY000) at line 82: The value specified for generated column 'column_name' in table 'table_name' is not allowed. When I describe the ...
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46 views

Can we use MariaDB mysqldump CLI to take dump from MySQL Community version?

MySQL server version: mysqld Ver 5.7.26 for Linux on x86_64 (MySQL Community Server (GPL)) MariaDB mysqldump CLI version: mysqldump Ver 10.17 Distrib 10.3.12-MariaDB, for Linux (x86_64) I am ...
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43 views

error while restoring database from mysql: ERROR 1006 (HY000)

I made a mysqldump from all my databases prior to fully deinstall and reinstall MariaDB. while restoring the databases with the following command, logged in as root: MySQL -u root -p < /mnt/...
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17 views

mysqldump changes primary key to unique key?

While attempting to dump and restore a WordPress database in MySQL, I noticed that mysqldump seems to be changing the PRIMARY KEY on several tables to a UNIQUE KEY instead. For example, this tables: ...
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436 views

Database size twice as large after mysql dump and re-import

After exporting and re-importing a mysql database, the size of the database on disk appears to be quadrupling in size. Any ideas why this my be? This is occurring when importing the sql dump right ...
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30 views

mysqldump writes dumped data to output

I'm trying to bring incremental backups to one old setup. The script I create worked perfectly when run directly. However when I run it from crontab or when redirecting shell output all data is ...
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358 views

how to dump mysql schema without keys and without constraint ? and keep all of them to alter afterwards

i am using ubuntu 16.04 and want to dump large schema with hounded of tables from AWS rds, remove all keys and foreign key , load data and then add back the keys , is there any automatic tool that ...
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155 views

How to restore mysqldump of one database in different databaseName with content of data in the same host machine

Let's start from the beginning there is a MySQL database with name DB1. As I want to restore the mysqldump backup of DB1 database in DB2. The DB2 database is another database in same Host Server ...
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83 views

mysql - import only schema from full dump?

I have a full database export (single file, schama + data), but I would like to import only the database schema. Is there any magic option or trick to achieve this? I'm NOT able to perform a "...
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How to speed up MySQLl loading from dump file?

I'm using mysqld Ver 5.7.25-0 in Ubuntu 16.04. I dumped from AWS Relational Database Service (RDS) with mysqldump --single-transaction --quick --max_allowed_packet 1G ... and now when I tried to load ...
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435 views

large dump: mysqldump: Got error: 2013: Lost connection to MySQL server

I need to dump to a text file a large database, which comprises one laaaarge table. I'm ding it like this: # mysqldump -p --single-transaction --quick --max-allowed-packet=2147483648 --tab=/mnt/...
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79 views

SQL dump loads with Error 1064

Looks like this issue is just the wrong version of MySQL, need to go to 5.5 So I have a backup of an offsite source SQL database. I am not sure how they are preforming the data dump but I am trying ...
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325 views

MySQL reporting version mismatch due to picking up previous installation

To solve a mysqldump "Workbench was unable to get mysqldump version. Please verify the log for more information.", I opted for the first solution at https://stackoverflow.com/a/44851129/175241 But ...
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42 views

Mysql replication rebuild dump database lock

I need to rebuild master-slave replication of whole instance of mariadb on innodb. What I often see is that people do read lock then dump master then unlock, like: FLUSH TABLES WITH READ LOCK; SHOW ...
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1answer
592 views

How to fix the sys.host_summary table in MariaDB 10.3.13

using mysqldump while doing a backup gives the following error: mysqldump: Got error: 1356: "View 'sys.host_summary' references invalid table(s) or column(s) or function(s) or definer/invoker of view ...
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769 views

Mysqldump multiple tables with where clauses in single transaction

Suppose, we have 2 tables: t1,t2 in database db: Expected the below code to dump tables based on conditions specified in the where clauses: mysqldump --login-path=login_path \ --single-...