Questions tagged [mysqldump]

MySQL's Standard Dump/Backup Utility

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174
votes
7answers
207k views

How can I optimize a mysqldump of a large database?

I have a symfony application with an InnoDB database that is ~2GB with 57 tables. The majority of the size of the database resides in a single table (~1.2GB). I am currently using mysqldump to ...
51
votes
3answers
66k 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 ...
137
votes
13answers
248k 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, ...
405
votes
4answers
755k views

How do you mysqldump specific table(s)?

How can I dump a specific table or set of tables without including the rest of the db tables?
2
votes
1answer
6k views

ERROR 1114 (HY000) at line 6308 in file & The table user_analysis is full

There is a SAN mounted 1TB partition for Mysql backups in our server with version 5.0.45-log. From two days, im seeing the log entries ERROR 1114 (HY000) at line 6308 in file & The table ...
37
votes
7answers
66k views

Is it possible to mysqldump a subset of a database required to reproduce a query?

Background I would like to provide the subset of my database required to reproduce a select query. My goal is to make my computational workflow reproducible (as in reproducible research). Question ...
8
votes
3answers
7k views

Changed max_allowed_packet and still receiving 'Packet Too Large' error

I use mysqldump to create a flat file for backup purposes. I have used this file to recreate the database on an alternate server. I ran the import process through ssh on the command line and I ...
5
votes
1answer
3k views

How does max_allowed_packet affect the backup and restore of a database?

I have a database based on mysql 5.0.75-0Ubuntu10.2, running under Ubuntu 9.04. I have a table in that database with a medium blob column. I have been using automysqlbackup to do nightly backups/dumps ...
79
votes
6answers
133k views

Safest way to perform mysqldump on a live system with active reads and writes?

I'm not sure if this is true but I remember reading if you run the following command in linux mysqldump -u username -p database_name > backup_db.sql while reads and writes are being made to a ...
23
votes
8answers
51k views

Any option for mysqldump to ignore databases for backup?

We have 40 databases in our server. We want to take 36 databases backup using mysqldump. How can i ignore remaining 4 databases in mysqldump command? Is there any option for mysqldump to ignore ...
31
votes
1answer
39k views

Dump only the Stored Procedures in MySQL

I need to dump only the stored procedures : no data, no table creation. How can I do this using mysqldump?
6
votes
4answers
4k views

Backup and restore “mysql” database

I use the following command to backup some normal databases: mysqldump --host=host --user=user --password=passwd --result-file=result.sql -R --single-transaction database_name My question is : do I ...
8
votes
2answers
16k views

DROP PROCEDURE IF EXISTS not included in mysqldump

I'm dumping my stored procedures only using the following command: mysqldump --routines --no-create-info --no-data --no-create-db --skip-opt databasename -u username -p > outputfile.sql but the ...
4
votes
1answer
2k views

Why would the size of MySQL MyISAM table indexes (aka MYI file) not match after mysqldump import?

I've been archiving some MySQL (version 5.0.96) MyISAM tables locally and deleting from my server after checking the data. Every time the process has been pretty similar and comes off mostly without a ...
3
votes
2answers
2k views

Quick MySQL Backup

I have a database which is grown to 3GB and it has 3 MyISAM tables. And I have 4GB RAM. What will be the best (quick) way to backup this database without any performance lack. Or mysqldump will work ...
7
votes
4answers
17k views

Verify mysqldump backup is corruption free

We've got a cron task backing up our Database using mysqldump - my main concern is corruption, short of manually importing and checking the backups each time whats the best way to check / verify a ...
9
votes
1answer
25k views

Can mysqldump dump triggers and procedures?

Is there any way of making a mysqldump which will save all the triggers and procedures from a specified db? Some time ago I read that mysqldump will also save my triggers, but it doesn't look like it....
5
votes
2answers
7k views

Different MySQL Datafile Sizes After Restoration

I'm quite new in database administration. The database architecture of my current company is master-slave replication. We are using MySQL version 5.0.86. Some weeks ago, we upgraded the company's ...
5
votes
2answers
2k views

How to copy a MySQL database which is a mixture of InnoDB and MyISAM to the same server?

Because mysqldump takes forever, we decided to just move around the files. Because the 2 databases are on the same server, a cp will be fast. The problem is, from research, MyISAM is okay with being ...
2
votes
1answer
920 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 ...
206
votes
11answers
169k 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 5.0....
68
votes
4answers
93k views

MySQL any way to import a huge (32 GB) sql dump faster?

I have this huge 32 GB SQL dump that I need to import into MySQL. I haven't had to import such a huge SQL dump before. I did the usual: mysql -uroot dbname < dbname.sql It is taking too long. ...
6
votes
2answers
18k views

Set up a MySQL slave using mysqldump to get the initial data

I have a master database which already has some data in it. The tables in the master database include both MyISAM and InnoDB engines. Now I want use mysqldump to dump the initial data of my slave ...
2
votes
1answer
3k views

importing myisam 5.0 database into a 5.5 innodb server

I have MySQL 5.0 and 5.5 servers (but not a 5.1 server). The 5.0 server is myisam only, the 5.5 default is innodb. I need to move a database from the 5.0 server to the 5.5 server. The database is ...
3
votes
1answer
4k 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 ...
4
votes
1answer
15k views

MySql - ERROR 1071 Specified key was too long; max key length is 1000 bytes while restoring dump

while trying to restore a MySql Dump, i get the following error: ERROR 1071 (42000) at line 25: Specified key was too long; max key length is 1000 bytes any ideas?
1
vote
1answer
445 views

Translating backup size to database size

I have a client who gave me a 4 gig datafile from mysqldump that I need to restore somewhere. Is there a good rule of thumb for translating the size of a backup into the size of the database once it ...
1
vote
1answer
437 views

mysqldump, preserve update_time and modify_time attributes as listed by show table status from

Does mysqldump preserve the create_time and update_time attributes that are output by show table status from? If not, is there an option that does this? From the manual it looks like mysqldump ...
41
votes
6answers
82k views

Restore mysql database with different name

How can we restore mysql database with different name from mysqldump file. I dont't want to open dump file and edit it. Any other better methods?
21
votes
6answers
33k 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 ...
14
votes
1answer
21k views

What are the optimal mysqldump settings? [closed]

After some search I ended up with the following settings: mysqldump\ --host=localhost\ --port=3306\ --databases ****\ --user=****\ --password=****\ --default-character-set=...
25
votes
1answer
14k 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?
9
votes
2answers
28k 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 ...
9
votes
2answers
59k views

How to log verbose output from mysqldump?

You typically save the verbose output of a Linux command like this: # command > output.txt But when you use a command like mysqldump, the > option outputs the dump of the database tables to ...
6
votes
4answers
13k views

how to dump a single stored procedure from a database

I need to create a dump file that contains a single stored procedure from a database, not all routines. I've tried something like this: mysqldump -u root -pssmart --skip-triggers --no-create-info --...
6
votes
1answer
9k views

MySQL - MySQLDump problems with large table

I have a MySQL database that is 10.6GB - that has both MyISAM & InnoDB tables. One particular table (called 'responses') is 8Gb - this table is InnoDB. The live database is replicated to a ...
3
votes
2answers
1k views

When does creating a .sql backup with mysqldump become too large?

Is there a limit to how large a database can be when executing a .sql backup using mysqldump, or will you run into server problems before that - will the server not be able to take such a large backup ...
2
votes
2answers
2k views

How to enable all the possible backup options of MySQL

I normally use MySQL Administrator to backup my database. I want to enable all the backup options for the available backup types in MySQL. I noticed that Binary Logging is not running on my PC. How to ...
0
votes
2answers
377 views

understanding mysqldump auto-backup performance issues and inner functionality

Is there a performance issue, if I run a cronjob in background with mysqldump --single-transaction with a 60 seconds interval? Will my original database keep functioning without an issue while the ...
4
votes
1answer
11k views

Move ibdata1, set innodb_data_file_path

I am in a bit of an awkward situation right now. I have a database with a few large InnoDB tables, one of which is about 145 GiB. I have been running a lot of maintenance on this table in particular, ...
3
votes
2answers
7k views

How do I replicate a MySql server's data without using mysqldump?

I've got a working server with a lot of data on it. I've built a new server that will be lots faster. Both are running x686 code on Debian Squeeze. A quick test using one of the tables shows that it ...
2
votes
2answers
1k views

mysqldump with automatically generated export name

When I do database dumps through MySQL WorkBench it picks a filename for me which is the current date (YYYMMDD). Now, I want to do this in a batch file since I want to make weekly dumps automatically ...
1
vote
1answer
1k 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 ...
5
votes
2answers
4k views

How to merge MySQL backup files (*.sql)

We have several MySQL backup files of a database in *.SQL format and we want to restore the database by using these files. However, as the sql files contains "DROP TABLE" definitions, running one ...
5
votes
1answer
7k views

MySQL settings useful to speed up a mysqldump import

Recently I had to import a 7 Gb MySQL dump file to a MySQL 5.6 server. The import took around 7 hours on a mono-core CPU with 1 Gb of RAM. Someone else tested the import on a MySQL server which has, ...
2
votes
1answer
773 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 ...
2
votes
3answers
3k views

Backup / Export data from MySQL 5.5 attachments table keeps failing!

Can anyone please help! - I have a large table in a MySQL 5.5 database. It is a table which holds a mixture of blobs/binary data and just data rows with links to file paths. It has just over a million ...
2
votes
1answer
775 views

MySQL : Does 'bytes_sent' and 'bytes_received' include mysqldump data?

I'm trying to estimate my db traffic not including backups (mysql 5.1.41). I use show global status; to get the parameters bytes_sent and bytes_received. Questions Do these numbers include ...
2
votes
1answer
793 views

mysql upgrading from 5.1 --> 5.6 do I have to do mysqldump before upgrade?

I was reading this document: http://dev.mysql.com/doc/refman/5.5/en/upgrading-from-previous-series.html It says when upgrading from mysql 5.1 to do a mysqldump and then a reload. Is there anyway ...
2
votes
1answer
7k 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?