560
If you are dumping tables t1, t2, and t3 from mydb
mysqldump -u... -p... mydb t1 t2 t3 > mydb_tables.sql
If you have a ton of tables in mydb and you want to dump everything except t1, t2, and t3, do this:
DBTODUMP=mydb
SQL="SET group_concat_max_len = 10240;"
SQL="${SQL} SELECT GROUP_CONCAT(table_name separator ' ')"
SQL="${SQL} FROM information_schema....
283
If you're just importing from a dump file from the CLI on *nix, e.g.
mysql -uxxx -pxxx dbname < /sqlfile.sql
then first install pipe viewer on your OS then try something like this:
pv sqlfile.sql | mysql -uxxx -pxxxx dbname
which will show a progress bar as the program runs.
It's very useful and you can also use it to get an estimate for mysqldump ...
93
Percona's Vadim Tkachenko made this fine Pictorial Representation of InnoDB
You definitely need to change the following
innodb_buffer_pool_size = 4G
innodb_log_buffer_size = 256M
innodb_log_file_size = 1G
innodb_write_io_threads = 16
innodb_flush_log_at_trx_commit = 0
Why these settings ?
innodb_buffer_pool_size will cache frequently read data
...
88
All Data is InnoDB
This is what will give you an exact point-in-time snapshot of the data:
mysqldump -uuser -ppass --single-transaction --routines --triggers --all-databases > backup_db.sql
--single-transaction produces a checkpoint that allows the dump to capture all data prior to the checkpoint while receiving incoming changes. Those incoming changes ...
78
Rather than killing the process, it would be safer if you did it within MySQL:
$ mysqladmin processlist -u root -p
Enter password:
+-----+------+-----------+-------------------+---------+------+-------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+-----+------+-----------+-------------------+...
74
A note to expand on the answer by RolandoMySQLDBA.
The script he included is a great approach for including (and table_name in) or excluding (and table_name NOT in) a list of tables.
If you just need to exclude one or two tables, you can exclude them individually with the --ignore-table option:
mysqldump -u -p etc. --ignore-table=Database.Table1 --ignore-...
69
The architecture of InnoDB demands the use of four basic types of info pages
Table Data Pages
Table Index Pages
Table MetaData
MVCC Data (to support Transaction Isolation and ACID Compliance)
Rollback Segments
Undo Space
Double Write Buffer (background writing to prevent reliance on OS caching)
Insert Buffer (managing changes to non-unique secondary ...
56
Export:
mysqldump -u username –-password=your_password database_name > file.sql
Import:
mysql -u username –-password=your_password database_name < file.sql
53
Based on this blog post
http://ilikekillnerds.com/2014/08/fixing-sequel-pro-sql-encoding-error-for-imported-sql-files/
When importing your database dump, you need to select Western (Mac OS Roman) as the encoding format for the file to import without issue.
36
Easier to use the --single-transaction switch:
mysqldump --single-transaction -u username -p db > db.sql
36
You need to collect all the database names into a space delimited list. Use that for mysqldump
MYSQL_USER=root
MYSQL_PASS=rootpassword
MYSQL_CONN="-u${MYSQL_USER} -p${MYSQL_PASS}"
#
# Collect all database names except for
# mysql, information_schema, and performance_schema
#
SQL="SELECT schema_name FROM information_schema.schemata WHERE schema_name NOT IN"
...
33
What I think is that the database you are trying to dump contains procedures/methods that were defined by a user while logged in as root@'foobar'.
Now the solution is that you have to replace the definer's for that procedures/methods
then you can generate the dump without the error.
you can do this like ..
UPDATE `mysql`.`proc` p SET definer = 'root@...
33
You can also import an .sql file as an already connected user to the database manner :
mysql> use your_database_name;
mysql> source file.sql;
31
When you have more than a few tables it is much better running something like this:
mysql databasename -u [user] -p[password] -e 'show tables like "table_name_%"'
| grep -v Tables_in
| xargs mysqldump [databasename] -u [root] -p [password] > [target_file]
Or somethink like this:
mysqldump -u [user] -p[password] databasename `echo "show ...
30
If you've already started the import, you can execute this command in another window to see the current size of your databases. This can be helpful if you know the total size of the .sql file you're importing.
SELECT table_schema "Data Base Name", sum( data_length + index_length ) / 1024 / 1024 "Data Base Size in MiB"
FROM information_schema.TABLES GROUP ...
30
Best Practices to take MySQL server backup:
MySQL Replication
Setup Replication in MySQL. You will have to setup Master and Slave server. All read-writes to the DB could go to your Slave Server.
Advantage of having Replication is you can take a backup from your slave server without interrupting Master server, Your application will continue to work on ...
30
You are going to find this shocking, but you only need one major option : --opt
What is --opt ?
This option, enabled by default, is shorthand for the combination of --add-drop-table --add-locks --create-options --disable-keys --extended-insert --lock-tables --quick --set-charset. It gives a fast dump operation and produces a dump file that can be ...
28
Please run this query:
SELECT
Data_BB / POWER(1024,1) Data_KB,
Data_BB / POWER(1024,2) Data_MB,
Data_BB / POWER(1024,3) Data_GB
FROM (SELECT SUM(data_length) Data_BB FROM information_schema.tables
WHERE table_schema NOT IN ('information_schema','performance_schema','mysql')) A;
This will give you a ballpark figure. The column index_length is ...
27
I know it's really late, but I found this question when I faced the same problem. So, in case anyone need, I found two possible solutions:
your user misses the LOCK privilege, so you should ask your database administrator to grant it to you
run the same mysqldump command, simply adding the --single-transaction flag, eg. mysqldump --single-transaction -u ...
23
The recommended way to back up RDS is with automatic backups and DB snapshots. DB snapshots are basically the same as EBS snapshots, which are stored in S3 behind the scenes, but are only available within the same region.
If you need cross-region fault tolerance (good plan!), there is no way to restore your data in another region without doing it "the ...
22
Take these some points in your consideration they may help you in case of generating the dump and restoring it.
Use Extended inserts in dumps.
Dump with --tab format so you can use mysqlimport, which is faster than mysql < dumpfile.
Import with multiple threads, one for each table.
Use a different database engine if possible. importing into a heavily ...
21
No mysqldump -all-databases does not include all objects
mysqldump --help
-A, --all-databases Dump all the databases. This will be same as --databases
with all databases selected.
So mysqldump with --all-databases only dumps all the databases.
In order to migrate all the databases to a new server, you should take a complete ...
20
In General if you have the credentials for accessing MySql from Machine B.
You should have MySQL user name , host name and Password.Then You can write the Command for taking backup
On Machine B Write
mysqldump -h Your_host_name -u user_name -p password --all-databases > backup.sql
If You Face issues there may be some network issue try some things as
...
19
You can dump database with SequelPro (Mac OSX) with File > Export (⇧⌘E) option.
18
The quickest solution would just be to re-create the definer so it does exist, as long as it doesn't create any conflicts with existing users.
CREATE USER 'root'@'foobar';
18
The reference to --binary-mode (introduced in MySQL 5.6.3) is probably a distraction.
It doesn't sound like you're dealing with a mysqldump output file, there. Try the file utility.
shell> file dumpfile.sql
dumpfile.sql: ASCII text
If you don't get the ASCII text response, you're dealing with either something that isn't a dump file from mysqldump at ...
18
You have to use the mysql client to reload
mysql -u root -p -Ddatabasename < /home/databasename_bkup.sql
Another way to reload would be
mysql -u root -p -Ddatabasename
then from the MySQL prompt, do this
mysql> source /home/databasename_bkup.sql
If you would like the mysqldump to drop and recreate the database for you, create the dump like ...
17
When you execute a mysqldump of a single database, all tables are dumped in alphabetical order.
Naturally, the reload of the mysqldump into a database would also be in alphabetical order.
You could just do a SHOW PROCESSLIST; and find out the DB Connection running the mysqldump. When the dump is reloaded, the DB Connection will vanish.
If you want to know ...
16
Back on Dec 16, 2011, I answered the question How do you mysqldump specific table(s)?
I collected all tables not including a certain set of table names.
Using the same principles, you could have collect all the database names from the metadata table information_schema.schemata that you want mysqldump'd, create a query to return that list, then use that ...
16
Since I happened to be researching this myself, here's a summary of what I found.
According to a 2015 blog post from the MySQL dev team, the main advantages of mysqlpump are that it can use multiple threads in parallel to speed up the dumping and that it doesn't share mysqldump's backwards compatibility requirements, which should open the door for further ...
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