mysqldump : MySQL's Standard Dump/Backup Utility

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22
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3answers
29k views

Why does InnoDB store all databases in one file?

It was convenient that MyISAM used to store each table in a corresponding file. InnoDB has made advancements in many aspects, but I wonder why InnoDB stores all databases in one file (ibdata1 by ...
0
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0answers
754 views

How can I backup/dump MYSQL database with foreign key constraints?

I wanted to take the dump of the MySQL database with all the constraints on that database. The dump (.sql file) I am having right now don't show any reference key(foreign key) relationship. I am ...
1
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0answers
133 views

restore using mysqlbinlog failing

While doing restore from a MySQL binary log file, it is failing with the following error . mysqlbinlog mysql-bin.000036 | mysql -u root -p asdb ERROR 1032 (HY000) at line 48: Can't find record in ...
0
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0answers
149 views

mysqldump hung indefinitely - locked tables - replication

I'm new to database programming. I had never written a simple SQL query before but recently I was asked to perform MySql DB replication for our redundant servers. It is a Linux server running as ...
0
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1answer
62 views

Backup live MySQL database

I have a single MySQL database Server version: 5.5.35-cll MySQL Community Server (GPL) ENGINE is MyISAM I use 'mysqldump' to backup and restore the database. Size of the dumpfile is 3GB+ Once a ...
0
votes
1answer
222 views

Upgrading mysql myisam 5.1 to mysql 5.6: force innodb on restore?

I inherited a DB using myisam on mysql 5.1 because of the need for fulltext search. I now read that fulltext search is available on mysql 5.6 innodb. Doing this would solve a lot of problems, as long ...
1
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0answers
66 views

mysqldump issues with DreamHost

Background: I sought to rename a database on Dreamhost web hosting VPS account. I also wanted to rename a database user for the database to be created above. I followed the approached detailed at ...
3
votes
1answer
321 views

how to verify mysql backup file

Is There any tool to verify the backup taken using mysqldump without manual restoration ? I have to take full backup daily so it is difficult for me to verify the backups daily by restoring them. As ...
0
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1answer
920 views

Speeding up mysqldump / reload

Converting a large schema to file-per-table and I will be performing a mysqldump/reload with --all-databases. I have edited the my.cnf and changed "innod_flush_log_at_trx_commit=2" to speed up the ...
1
vote
1answer
327 views

MySQLdump on specific db date

I'm new in here and i don't really know where to start but here is my concern. I need to backyp a MySQL DB running under windows once a week. For e.g every friday i need to backup and transfer to ...
2
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1answer
2k views

mysql db backup excluding specific tables

Are there any mysql scripts for taking a database backup by excluding specified tables? Also, what is the best way to take backup of a running mysql system?
0
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1answer
119 views

Mysql replication dump without down time? empty sql file

I try to create dump as replication master data and use followed command to create dump, but sql file only contains paramters and there is no data and structure. The command is : mysqldump ...
2
votes
1answer
271 views

Which are the minimum privileges required to get a backup of a MySQL database schema?

Which are the minimum privileges required to get a backup of a MySQL database schema? I am interested only on the schema, not on the data. Are SELECT privileges required?
3
votes
2answers
5k views

Error while restoring a Database from an SQL dump

I am extremely new to MySQL and am running it on Windows. I am trying to restore a Database from a dumpfile in MySQL, but I get the following error: $ >mysql -u root -p -h localhost -D database ...
2
votes
1answer
477 views

MySQL backup InnoDB

I have a VoIP server running 24x7. At low peak hour at lease 150+ users are connected. My server has MySQL running with InnoDB engine on Windows 2008 platform. I like to take at least 2 times full ...
0
votes
1answer
199 views

Why does importing a MySQL dump cause so many I/O?

I imported 100 SQL-format dump files. The total size was 20 GB. The resulting .ibd files after the import had a total size of 40 GB. mysqld.exe wrote 1.1 TB and read 120 GB on the disk. Why so many ...
2
votes
1answer
162 views

Backup everything except one record

I want to backup my database except t1 table's one record (where option='siteurl'). I'm trying mysqldump's --where command. mysqldump -u root --skip-extended-insert --where "option='siteurl'" ...
1
vote
3answers
704 views

Converting live MyISAM table to InnoDB

I have a table that tracks web traffic. The table is constantly written and read from. Since table is pretty big in size I have to make sure the application will not "freeze" in the process of ...
42
votes
3answers
19k views

How can I monitor the progress of an import of a large .sql file?

I am importing a 7 GB foobar.sql to restore a table in a local database. $ mysql -h localhost -u root 'my_data' < foobar.sql $ mysql --version /usr/local/mysql/bin/mysql Ver 14.12 Distrib ...
0
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0answers
142 views

mysqldump & upload to mysql speed impact due to SSD and innoDb?

I am testing an AWS Medium Instance with CentOS (AWS AMI) and comparing it with Hetzner's EX40-SSD (http://www.hetzner.de/hosting/produkte_rootserver/ex40ssd). Software setup on both is comparable( ...
4
votes
1answer
3k views

Consistent logical backup of databases that use MyISAM and InnoDB engines

I have a question regarding the logical backup of MySQL databases that use both MyISAM and InnoDB. The mysqldump utility supports these two options: --single-transaction - Creates a consistent ...
3
votes
1answer
269 views

Backing up a 400-500 GB database on MySQL/Amazon RDS?

We have an Amazon RDS small instance for a MySQL datawarehousing database. Database size will be around 400-500 GB very shortly. What is the best way to backup our database? Can it be done ...
5
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2answers
3k 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 ...
1
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2answers
3k 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
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1answer
70 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?
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1answer
62 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
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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
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1answer
313 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 ...
7
votes
6answers
12k views

slow load speed of data from mysqldump

I've got a moderate size MySQL database with about 30 tables, some of which are 10 million records, some 100 million. The mysqldump of all the tables (into separate files) is fairly fast, takes maybe ...
2
votes
2answers
779 views

Tool to export data with all relational data?

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
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1answer
314 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
107 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
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1answer
89 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
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2answers
302 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 ...
1
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1answer
133 views

mysql: how to copy database and required dependencies

I need to set up an automated copy of a single mysql database (not the whole DBMS). If I use mysqldump to dump and recreate a DB, the copy may be unusable because the user accounts need to also be ...
0
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0answers
595 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
885 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
321 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
2k 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
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1answer
2k 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
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0answers
348 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 ...
5
votes
7answers
33k views

How to import a .sql file in MySQL?

I am trying to import a .sql file using MySQL Workbench and I get this error: ERROR 1046 (3D000) at line 28: No database selected I have first created an empty database called with the same name as ...
0
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0answers
347 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
136 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
392 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 ...
3
votes
2answers
5k 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
336 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
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1answer
101 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
5k 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
374 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 ...