creating mysqldump to backup database - mysql
I know how mysqldump works.
But dont know where to use it?
If I execute this command after starting mysql program then it says error.
I am using ubuntu. So how can I use this utility?
Backup your database this way too..
mysql -u root -p DB_NAME > db_name_backup.sql
If you want to backup all database simply run this
mysql -u root -p > mysql_db_backup.sql
You will learn more about mysql and mysqldump here..
Guide:
mysqldump and mysql
MySQL Database Backup using mysqldump
shell> mysqldump --opt db_name > backup-file.sql
You can read the dump file back into the server like this:
shell> mysql db_name < backup-file.sql
Or like this:
shell> mysql -e "source /path-to-backup/backup-file.sql" db_name
mysqldump is also very useful for populating databases by copying data
from one MySQL server to another:
shell> mysqldump --opt db_name | mysql --host=remote_host -C db_name
It is possible to dump several databases with one command:
shell> mysqldump --databases db_name1 [db_name2 ...] > my_databases.sql
If you want to dump all databases, use the --all-databases option:
shell> mysqldump --all-databases > all_databases.sql
If tables are stored in the InnoDB storage engine, mysqldump provides a
way of making an online backup of these (see command below). This
backup just needs to acquire a global read lock on all tables (using
FLUSH TABLES WITH READ LOCK) at the beginning of the dump. As soon as
this lock has been acquired, the binary log coordinates are read and
lock is released. So if and only if one long updating statement is
running when the FLUSH... is issued, the MySQL server may get stalled
until that long statement finishes, and then the dump becomes
lock-free. So if the MySQL server receives only short (in the sense of
"short execution time") updating statements, even if there are plenty
of them, the initial lock period should not be noticeable.
shell> mysqldump --all-databases --single-transaction > all_databases.sql
For point-in-time recovery (also known as “roll-forward”, when you need
to restore an old backup and replay the changes which happened since
that backup), it is often useful to rotate the binary log (see
Section 8.4, “The Binary Log”) or at least know the binary log
coordinates to which the dump corresponds:
shell> mysqldump --all-databases --master-data=2 > all_databases.sql
or
shell> mysqldump --all-databases --flush-logs --master-data=2 > all_databases.sql
The simultaneous use of --master-data and --single-transaction works as
of MySQL 4.1.8. It provides a convenient way to make an online backup
suitable for point-in-time recovery if tables are stored in the InnoDB
storage engine.
For more information on making backups, see Section 6.1, “Database
Backups”.
mysqldump -u MYSQL_USER -h MYSQL_SERVER -pMYSQL_PASS --all-databases > "dbs.sql"
You use it directly on the terminal, just like mysql it self, and pass the parameters directly to it.
mysqldump -u [user] -p[password] [database name] > dumpfilename.sql
yes you can.
see http://dev.mysql.com/doc/refman/5.0/en/mysqldump.html for more information on the tool.
If it's an entire DB, then:
$ mysqldump -u [uname] -p[pass] db_name > db_backup.sql
If it's all DBs, then:
$ mysqldump -u [uname] -p[pass] --all-databases > all_db_backup.sql
If it's specific tables within a DB, then:
$ mysqldump -u [uname] -p[pass] db_name table1 table2 >
table_backup.sql
You can even go as far as auto-compressing the output using gzip (if your DB is very big):
$ mysqldump -u [uname] -p[pass] db_name | gzip > db_backup.sql.gz
If you want to do this remotely and you have the access to the server in question, then the following would work (presuming the MySQL server is on port 3306):
$ mysqldump -P 3306 -h [ip_address] -u [uname] -p[pass] db_name >
db_backup.sql
To IMPORT:
ype the following command to import sql data file:
$ mysql -u username -p -h localhost DATA-BASE-NAME < data.sql
In this example, import 'data.sql' file into 'blog' database using vivek as username:
$ mysql -u sat -p -h localhost blog < data.sql
If you have a dedicated database server, replace localhost hostname with with actual server name or IP address as follows:
$ mysql -u username -p -h 202.54.1.10 databasename < data.sql
OR use hostname such as mysql.cyberciti.biz
$ mysql -u username -p -h mysql.cyberciti.biz database-name < data.sql
If you do not know the database name or database name is included in sql dump you can try out something as follows:
$ mysql -u username -p -h 202.54.1.10 < data.sql
REfer: http://dev.mysql.com/doc/refman/5.6/en/mysqldump.html
Related
Backup all privileges related to specific user of MySQL
I want to backup all privileges related to specific user (for example u_1) from a MySQL database and restore that in another server. As described here, The 'mysql' database contains users/privileges/passwords. So I have to backup all related data from all tables of mysql database (mysql.user,mysql.db, ...). I can run this command: $ mysqldump -u root --flush-privileges -r mysql.sql -p mysql But of course the mysql.sql contains all users and all privileges. Also I tried this command: $ mysqldump -u root -p --where="user.user='u_1'" mysql user> mysql.sql But as expected, it only contains a row of mysql.user table. Is there a way to strip out other users except of u_1?
Try these options (line breaks for clarity): $ mysqldump -u root -p --where="user='u_1'" --complete-insert --extended-insert --no-create-info mysql user db tables_priv columns_priv procs_priv proxies_priv > mysql.sql Or... let's call the above solution "the hard way." This should be the easy way: $ mysql -u root -p --skip-column-names -e "SHOW GRANTS FOR 'u_1';" > grants.sql
I would use: pt-show-grants --only u_1 pt-show-grants is a tool in the free Percona Toolkit. See https://www.percona.com/doc/percona-toolkit/LATEST/pt-show-grants.html
MySQL : Restore dump file
I have a single .sql file which is 800MB in size and contains a few of databases including tables and datas. The problem is, how to restore this kind of dump since there is no CREATE DATABASE syntax in the file? I try mysql> -u root -p --all-database < c:\data.sql but no joy.
Conducted a backup of the following. mysqldump -u xxx -p --all-database > c:\data.sql Or, in the database unit mysqldump -u xxx -p --databases db_name > c:\data.sql Recovery in the following code. mysql -u root -p < c:\data.sql
how can i take backup of mysql database tables
i want to move mysql database tables which resides in one computer to another computer. how can i create dump file as we created in Oracle ? i m using exp command but not working.
Use mysqldump. mysqldump -u <username> -p<password> <db_name> > <filename>.sql To import, create empty database named <db_name>, thena - mysql -u <username> -p<password> <db_name> < <filename>.sql To export all databases - mysqldump -u <username> -p<password> --all-databases > <filename>.sql
mysqldump -u <username> -p<password> -h <hostname> <dbname> <tablename> > filename.sql Now you may need to take the dump of just the schema. For example you use a command called like. mysql> show create table tablename; this will give you the query that created the table. Now for some reason you need to take schema dump of all the tables inside you database/databases you may use -d option like this mysqldump -d -u <username> -p<password> -h <hostname> <dbname> > filename.sql The -d option means "without data". Now you have full dump without the data and just the schema.
How to use MySQL dump from a remote machine
How can I backup a mysql database which is running on a remote server, I need to store the back up file in the local pc.
Try it with Mysqldump #mysqldump --host=the.remotedatabase.com -u yourusername -p yourdatabasename > /User/backups/adump.sql
Have you got access to SSH? You can use this command in shell to backup an entire database: mysqldump -u [username] -p[password] [databasename] > [filename.sql] This is actually one command followed by the > operator, which says, "take the output of the previous command and store it in this file." Note: The lack of a space between -p and the mysql password is not a typo. However, if you leave the -p flag present, but the actual password blank then you will be prompted for your password. Sometimes this is recommended to keep passwords out of your bash history.
No one mentions anything about the --single-transaction option. People should use it by default for InnoDB tables to ensure data consistency. In this case: mysqldump --single-transaction -h [remoteserver.com] -u [username] -p [password] [yourdatabase] > [dump_file.sql] This makes sure the dump is run in a single transaction that's isolated from the others, preventing backup of a partial transaction. For instance, consider you have a game server where people can purchase gears with their account credits. There are essentially 2 operations against the database: Deduct the amount from their credits Add the gear to their arsenal Now if the dump happens in between these operations, the next time you restore the backup would result in the user losing the purchased item, because the second operation isn't dumped in the SQL dump file. While it's just an option, there are basically not much of a reason why you don't use this option with mysqldump.
This topic shows up on the first page of my google result, so here's a little useful tip for new comers. You could also dump the sql and gzip it in one line: mysqldump -u [username] -p[password] [database_name] | gzip > [filename.sql.gz]
mysqldump -h [domain name/ip] -u [username] -p[password] [databasename] > [filename.sql]
Tried all the combinations here, but this worked for me: mysqldump -u root -p --default-character-set=utf8mb4 [DATABASE TO BE COPIED NAME] > [NEW DATABASE NAME]
If you haven't install mysql_client yet and using Docker container instead: sudo docker exec MySQL_CONTAINER_NAME /usr/bin/mysqldump --host=192.168.1.1 -u username --password=password db_name > dump.sql
You can directly pipe it to the remote server where you wish to copy your data to: mysqldump -u your_db_user_name -p --set-gtid-purged=OFF --triggers --routines --events --compress --skip-lock-tables --verbose your_local_sql_db_name | mysql -u your_db_user_name -p -h your_remote_server_ip your_remote_server_db_name You need to have created the db on your remote sql server. Using the above command, I was able to copy from my local sql server version 8.0.23 to my remote sqlserver running 8.0.25
This is how you would restore a backup after you successfully backup your .sql file mysql -u [username] [databasename] And choose your sql file with this command: source MY-BACKED-UP-DATABASE-FILE.sql
mysql dump, windows, seperate files for each DB, all databases option
Does anybody have an example on how to dump all databases uses mysql dump? And possible all a new file for each DB? I'm using the follow command: mysqldump -u root -p pw --all-databases > backup.sql; It's returning with "You have an error in your SQL sytax"; Thanks!
There is an error in your command, it should be no space after -p, like mysqldump -u root -ppw --all-databases > backup.sql; I not sure how many database you have, usually you can do this :- mysqldump -u root -ppw db_a > db_a.sql; mysqldump -u root -ppw db_b > db_b.sql; ... ... for all the databases