mysqldump : MySQL's Standard Dump/Backup Utility

learn more… | top users | synonyms

6
votes
2answers
7k views

Best practices for backing up a MySQL DB

I've recently discovered that our production web servers that run off MySQL are not being backed up regularly (or at all). I'm used to backing up SQL Server DB's but don't have a ton of experience ...
2
votes
2answers
4k views

How can I synchronize data between two RDS MySQL databases

I have 2 Amazon RDS MySQL instances, one is MySql v5.5 and the new one is 5.6. I want to upgrade the 5.5 to the 5.6 but you cannot do upgrades at this time, so we are trying to migrate the data. I ...
1
vote
1answer
75 views

Where Mysqldump gets data from

How mysqldump is processing backup? From which all files is it reads data for creating dump? Is the process differs if storage engines are different?
-3
votes
1answer
66 views

How can I move one table from one database to other database [closed]

I want to move one table in one database to other database using mysql dump on linux terminal How can I go about it ?
1
vote
1answer
2k views

passing --single-transaction in mysqldump command line tool

I'm using MySQL GUI tool to backup my innodb database and I use the option '--single-transaction' to get a consistent copy as backup. I have however, noticed that if I backup using command line ...
0
votes
1answer
443 views

Deadlock from mysqldump --single-transaction, is it possible?

Is it possible to get a deadlock if you ran mysqldump with the argument --single-transaction ? or any other complication ? If it is used to backup a live site with many other querys running at the ...
3
votes
2answers
1k views

Tool to export data with all relational data? [closed]

Is there a tool to export data from selected rows in a table with all data stored in other tables in other tables linked by relational design? The purpose is to ease migrations of bits of data ...
1
vote
1answer
393 views

mysqldump―output details

I am about to write a little program to process database dump files created by mysqldump and I would like to make sure that my expectations about the »anatomy« of mysqldump's output are right. So ...
0
votes
1answer
119 views

MySQL data retained after OS reinstall

Something strange happened today. I reinstalled my OS and then when I reinstalled MySQL workbench some of my old data was still there. I think the actual local db is empty, but all the connections, ...
0
votes
1answer
114 views

Optimizing and maintaining test databases for a web development team

Right now when we test, we mysqldump from the production database, load it into the test database server, and then use scripts to scrub sensitive data. As the database is getting bigger, this process ...
0
votes
2answers
416 views

How can we check for data integrity when we upgrade from MySQL 4.1 to MySQL 5.5?

By data integrity, I mean: Schema integrity Data (record level) integrity Checksum was an option, but since the storage format for some data types in MySQL 5.5 has been changed, it won't be ...
0
votes
0answers
753 views

How to speed up a mysql restore from large dump file

I have a 350MB msyql dump file that takes over 3 minutes to load. I'd like to speed it up. I've tried using --opt with mysqldump (shaved off 30 seconds). The best I can achieve is 42 seconds faster. ...
1
vote
1answer
2k views

mysqldump: replace drop table in output with delete?

I am using mysqldump to dump some records in a table: mysqldump mydatabase mytable --where="field=value" this emits script that includes drop table mytable statement. Since I use the --where ...
0
votes
1answer
633 views

Export just rows modified in last month (date defined by user)

I'm asking if it's possible in MySQL to export just rows modified in a period of time for example in the past month, if it is possible, how?
0
votes
1answer
3k views

mysql duplicate entry error 1062 when restoring backup

Sorry, I seen similar threads but I still couldn't find it addressing my issue plus, I needed some more info on this. Requirement: To create an exact replica 'db4' of an existing DB 'db3'. Procedure ...
3
votes
1answer
3k views

mysql works, mysqldump doesn't

I have mysql 5.5 on my ubuntu 12.04 server. This command: mysql -u root -p works perfectly, but this gives me error: mysqldump -u root -p mydb_name > a.sql mysqldump: Got error: 2002: Can't ...
1
vote
0answers
561 views

How do I safely import MySQL data in a directory to a running MariaDB server?

We're integrating another office into ours. That includes some of their data. I have a new installed MariaDB 5.5 server. The data dir = /home/data/MariaDB. I've done a new/fresh install into that ...
0
votes
0answers
513 views

Trouble converting MySql Database to SQL Server

I have an mysql database that contains 38 tables. I used "SQL Server Migration Assistant for Mysql" tool to convert this database to SQL server Database. I successfully converted 37 tables. Only one ...
-1
votes
1answer
153 views

MySQL Migration from Slave to Master

I recently had a problem with our server. It required us to install a new hard drive, cpanel, and setup the old hard drive as a slave. How can I migrate the mysql database from the slave drive to the ...
2
votes
1answer
450 views

How to prevent high memory, CPU and time consumption by MySQL restore?

I have a local test machine with 2 GB RAM and a dual core processor. I imported a dump on that using mysql -uuser -psecret < script.sql script.sql is a 700 MB file which contains a single ...
4
votes
2answers
9k views

MySQL replication: 'Duplicated entry for PRIMARY key'

Could you please help me to understand why I'm receiving 'Duplicated entry for PRIMARY key' on a slave server after a full re-sync. Basically 'mysqldump' was running almost whole night and then the ...
2
votes
1answer
624 views

Table optimize command crashed MySQL server

I have a large 5GB table on one of my MySQL databases that I wanted to optimize. I went into the console and ran the optimize command and since it's an InnoDB database it cloned the table to a ...
0
votes
1answer
144 views

How we take dump with batch of records option?

we have 30 GB database.we want to take backup of this database. here the question is we want to take the backup batch of every 10k records. How we can take batch of records backup using mysqldump
4
votes
2answers
7k views

Can mysql restore a single table from a large mysqldump?

What is the best way to restore a single table from a large (~5GB) database mysqldump file? update: I have found solutions (posted below) using command line tools to parse the table, but is there a ...
2
votes
1answer
508 views

MySQL Dump/Import progress on Windows

I'm going to dump a considerable big datatabase (7gb) from a MySQL 5.1 instance running on Windows into a .sql script and import it into a MySQL 5.5 instance, also on Windows (another machine). I'd ...
0
votes
1answer
756 views

Is there a system wide way to change MariaDB to create tables using ROW_FORMAT = DYNAMIC

I've got a 700MB dump file from a mysql database that I was trying to undump into a new install of MariaDB and I got this error ERROR 1118 (42000) at line 7481: Row size too large (> 8126). ...
1
vote
1answer
670 views

Using a mysqldump export to create data with a different database name

I am using the following to import database using a mysqldump export: mysql -u root -p example_db < path/to/export.sql I would like to import the database to a database with a different name to ...
1
vote
1answer
376 views

MySQL import LOCK doesn't prevent PRIMARY key issues

I am using Django and only want to backup mysql data (not it's structure; Django will do that, and it will otherwise mess up Django-South's migration checks). Some info; my tables are almost all ...
2
votes
1answer
4k views

Issue on mysqldump in MySQL5.6

I did upgrade the MySQL server from 5.5 to 5.6 I am trying to take dump for a table like this mysqldump -uroot -p dba admin > D:\admin.sql But it gets following error mysqldump: Couldn't ...
2
votes
1answer
3k views

mysqldump: Got error: 1017: Can't find file: 'drupal_install_test' (errno: 2) when using LOCK TABLES

I'm trying to backup a drupal site database but I'm having some issues. When I ran the following command: mysqldump -uroot -p drupaSite > drupaSite.sql I get the following error: mysqldump: Got ...
2
votes
1answer
1k views

Load different date formats in mysql

I have a date field in my datafile which I am trying to load in MySQL, but the date field is in dd-mon-yy format and MySQL only understands YYYY-MM-DD. Is there a way by which I can load DD-MON-YY ...
4
votes
3answers
2k views

How to change data structure in mysql using mysqldump without deleting files

Essentially what I'm trying to do is sync a production server with a sandbox server, but only the table structures and stored procedures. The procedures aren't any problem since they can be overriden, ...
1
vote
2answers
2k views

how to import mysql system “mysql” database [closed]

This question might be already answered but it's almost impossible to google it. When I perform full backup of mysql server using mysqldump --all-databases then reinstall it from scratch I want to ...
15
votes
2answers
17k views

What is the recommended way to backup a MySQL/Amazon RDS database to S3?

I have two purposes for this: To have an offsite backup in case of a region wide problem with Amazon Web Services. To copy production data from a production billing account to a beta billing ...
1
vote
1answer
225 views

mysqldump error on bash script

I'm trying to run a bash script to backup my database with Cronjob. # Backup and compress each database for database in $mysql_databases do if [ "${database}" == "information_schema" ] || [ ...
0
votes
1answer
504 views

ERROR 1034 (HY000) : Wrong aligned block, while importing in mysql

I got a SQLdump from my database and now I want to import it in to an other mysql server with same version(5.5.22-0ubuntu1) in ubuntu 12.04 .but at the middle of importing, it said: ERROR 1034 ...
69
votes
14answers
127k views

How can I move a database from one server to another?

How can I move MySQL tables from one physical server to another? Such as this exact scenario: I have a MySQL server that uses innodb table and is about 20GB size. I want to move it to a new server, ...
6
votes
1answer
3k views

How can I determine the size of a dump file prior to dumping?

How can I determine or estimate the size of the SQL dump file prior to using something like mysqldump?
1
vote
1answer
173 views

Access denied Error in MySQL and Drupal

We are trying to deploy a Drupal application on our production server. We see this strange error Lost connection to MySQL server at ''Access denied root@ipaddres password(yes) after deploying. We ...
0
votes
2answers
779 views

How to restore mysql dump file? [closed]

We have created a dump file (.sql) using the command mysqldump in mysql5.5. Now we want to restore the same. We are using the command :- -u[username] -p[pwd] [dbname] < [.sql file] But we are not ...
0
votes
1answer
3k views

How to copy MySQL Database from Linux to Windows?

I would like to copy a MySQL database form Linux to Windows, from a little research I found this url http://www.cyberciti.biz/tips/howto-copy-mysql-database-remote-server.html where the author says we ...
2
votes
2answers
1k views

mysqldump: flush-privileges option

I'd like to get some clarification about the --flush-privileges option for mysqldump. Here's the description of the option from the MySQL docs: --flush-privileges Send a FLUSH PRIVILEGES ...
0
votes
2answers
831 views

How to take a database dump for selective set of values in few tables?

create table foo (id, val1, user_id,...) create table bar (id, foo_id, val2, ...) create table baz (id, bar_id, val3, ...) select * from foo where user_id = 1; select * from bar where id in (select ...
2
votes
2answers
376 views

How does mysqldump take place when there are more than one database?

I'm writing a shell script wherein I'm doing a mysqldump of all databases. My questions are: Are the tables of all databases in the server locked during the mysqldump? If I have to do an ...
0
votes
1answer
237 views

mysqldump including deleted rows [closed]

I'm trying to move a database from a Windows2003Server with mysql 5.0.27-community-nt to a new server with CenTOS. When using mysqldump on the database on the windows server, one table (i haven't ...
0
votes
0answers
53 views

Phpmy admin not showing my table but mysqldump

I have a db running and suddenly when I go into my phpmyadmin under the db it shows no tables and when I tried to do dump it shows me some of my tables are crash. What is best survival in this case?
0
votes
1answer
3k views

Problem with (not) Locking Tables during Restore

First time here in DBA. I'm working to create a simple and strong database backup plan. My solution that is already working to create a gzipped, encrypted backup is: $string = "mysqldump -u$db_user ...
1
vote
2answers
635 views

MySQL: optimal configs / methods for ALTER of large MyISAM table to InnoDB (17gb+)

I have a large MySQL (5.1) MyISAM table (13gb table, 4GB indexes - 40mm+ records) I'm going to be converting this table to InnoDB in a production environment. The DB is on a cloud server with ...
3
votes
2answers
7k views

How do I dump only the data for all tables using mysqldump

I have a new database with schema and primary key, FK, index constraints created for all tables. How do I dump only the data from an existing database using mysqldump, so that I can import only the ...
3
votes
1answer
5k views

Dump of a mysql table on import replaced existing records

I took a dump using mysqldump.. mysqldump -u... -p... mydb t1 > mydb_table.sql Then I imported the dump in another database having same table, but different records.. mysql -u...-p... mydb < ...