I have a dead hard drive. I've connected it with SATA to USB IDE and can recover files. Also the filesystems looks good. How Can I get a dump of database from that hard drive. The laptop I'm using also has mysql installed in it. I'm using xampp. I've tried the following command.
G:/xampp/mysql/bin/mysqldump -u root -p uma > D:/umaoldbackup.sql
This is not giving dump of a latest data. And I think it's giving dump from my local computer.
Please help.
Correct, mysqldump connects to the running MySQL Server process on your local computer, not the data on your sick hard drive.
MySQL client applications like mysqldump do not read the data files directly. They connect to a MySQL Server process and make requests for the data. Before you can access that data, you need to restore the data files to the data directory of an instance of MySQL Server.
Stop the MySQL service.
Copy data files to the data directory of your MySQL service. Move any existing data files to someplace else that is safe, if you want to bring back that data after exporting your umaoldbackup.
Start the MySQL service so it can read the files in that data directory.
You should probably get someone to do this for you if you don't know how to start and stop services on Windows.
Re your comment about where is the data directory...
I'm not a user of Windows or XAMPP.
It's probably actually C:\xampp\mysql\data according to What is the exact location of Mysql database tables in XAMPP folder?
But you can confirm that by connecting to your current MySQL service with a client and running the following query:
SELECT ##datadir;
Related
Guys I am trying to import database from a folder in the laptop to a live server via putty.
I have tried using:
mysql -u root -p dbname <"c:\path to database.file.sql"
I have also tried to use:
c:\path to database mysql -u root -p <file.sql
,but all in vain saying directory not found.
How can I import database from folder in laptop direct to centos via putty command line ?
First of all you should transfer the file from your computer to your CentOS Server.
I will suggest using WinSCP, (I prefer for not large size file transfers) it is very easy to use and it can help you a lot for the files edit, too.
You should make a new connection putting your Server IP, username and password.
After that you can use drag and drop for files transfer.
You can use https://cyberduck.io/ , if you want.
For copying tables or databases from local environment to my remote server, I use SQLYog - https://code.google.com/archive/p/sqlyog/wikis/Downloads.wiki
I setup the connections to my remote environment and then to my server. Then, all you need to do is copy the database from one host to the other
Then select the remote host, database to which data should be copied and let the software do the rest of the work.
I am using phpmyadmin on my windows os. I have a database with one table which has 100M records with the size of 20GB. I want to export this table and have the table.sql file. Whenever I try to do this, the size of the exported file is 0 bytes. When I check the apache error log, the following would show up:
Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 1066139648 bytes)
Any idea how to solve this problem?!
Thanks :)
I would suggest to try using the command line and the mysqldump.exe utility, as suggested here
If you have shared hosting and you are using Cpanel then they are providing you the option to backup your database in the following section.
Files => Backup => Download a MySQL Database Backup.
If you are on a shared hosting or you don't have access to shell, then use mysqldumper script; copy it to your server and start it in your browser under "yourDomain.com/path_to_mysqlumper/"
MySQLDumper is a PHP and Perl based tool for backing up MySQL
databases. You can easily dump your data into a backup file and - if
needed - restore it. It is especially suited for shared hosting
webspaces, where you don't have shell access.
If you have shell access to your host servers (if provided by your host since not all shared server hosters give this access) then you may use SSH access like in this tutorial using Putty that you install and configure then import or export your databases like in this third tutorial.
I try mysqldump for many hours but didnt work, until I started a superuser console.
First, start a superuser console
sudo su
Then, try the complete command
/opt/lampp/bin/mysqldump -u root -p [DATABASE NAME] > [PATH_FOR_BACKUPFILE]/[FILE_NAME].sql
I my case, it was something like /opt/lampp/bin/mysqldump -u root -p database > /home/user/backup.sql
MySQLDumper worked like a charm for me at my hosted website. I had to copy one database and "paste" it into a new database. In MySQLDumper, it isn't apparent right away how to do this, but the key is to create a new configuration file in MySQLDumper and that will allow you to copy/restore to different databases.
On the home screen in MySQLDumper, click Configuration, then Configuration Files. There is a text box at the top allowing you to create a new Configuration file. In there, put in the information for the second database you need (you created a connection to the first database when you install MySQLDumper). Save it. Then you can click Restore where you can select the dump of the first database and restore it in the second one.
This was a lifesaver. Thanks!
increase
max_post_size
variable in php.ini file. Then you will be able to download it.
I had a different issue when I was downloading from phpmyadmin in the middle like 180MB download stops with message - network error
So I used ssh connection which you can find in your cpanel sometimes they provide browser based terminal or sometime you have to access it using putty .
In terminal I go inside my public_html folder where all my files are stored . Followed by this command:
mysqldump -u [username] -p [database-you-want-to-dump] > [path-to-place-data-dump.sql]
This did the job in few minutes and saved a sql file in my public_html folder. Then I opened the folder in File manager and downloaded it from there.
You can also use FTP or you can download it directory by accessing by url.
Make sure you delete it after your download finishes.
Hey Guys so the other day I was running a database schema in the mysql workbench on my mac. I had added tables populated the data and tried to run some big queries. The server died and now when I connect to my local host instance I cannot find my database. However I can still see my database file in /usr/local/mysql/data/
Can any one help me work out how to start mysql server again and get it to load in the file?
I just dont' understand why it can no longer see the schema..
Connecting as localhost, using root, both workbench and terminal can't see the file. However the file is here:
The file I want is AM_DUMPS
When I try and load it from SQL Workbench I get:
Check to see if the data directory is owned by MySQL or mysqld is not launched as the mysql user. It looks like something along those lines. You may have to adjust the permissions to make sure that mysql is the owner.
I am using phpmyadmin on my windows os. I have a database with one table which has 100M records with the size of 20GB. I want to export this table and have the table.sql file. Whenever I try to do this, the size of the exported file is 0 bytes. When I check the apache error log, the following would show up:
Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 1066139648 bytes)
Any idea how to solve this problem?!
Thanks :)
I would suggest to try using the command line and the mysqldump.exe utility, as suggested here
If you have shared hosting and you are using Cpanel then they are providing you the option to backup your database in the following section.
Files => Backup => Download a MySQL Database Backup.
If you are on a shared hosting or you don't have access to shell, then use mysqldumper script; copy it to your server and start it in your browser under "yourDomain.com/path_to_mysqlumper/"
MySQLDumper is a PHP and Perl based tool for backing up MySQL
databases. You can easily dump your data into a backup file and - if
needed - restore it. It is especially suited for shared hosting
webspaces, where you don't have shell access.
If you have shell access to your host servers (if provided by your host since not all shared server hosters give this access) then you may use SSH access like in this tutorial using Putty that you install and configure then import or export your databases like in this third tutorial.
I try mysqldump for many hours but didnt work, until I started a superuser console.
First, start a superuser console
sudo su
Then, try the complete command
/opt/lampp/bin/mysqldump -u root -p [DATABASE NAME] > [PATH_FOR_BACKUPFILE]/[FILE_NAME].sql
I my case, it was something like /opt/lampp/bin/mysqldump -u root -p database > /home/user/backup.sql
MySQLDumper worked like a charm for me at my hosted website. I had to copy one database and "paste" it into a new database. In MySQLDumper, it isn't apparent right away how to do this, but the key is to create a new configuration file in MySQLDumper and that will allow you to copy/restore to different databases.
On the home screen in MySQLDumper, click Configuration, then Configuration Files. There is a text box at the top allowing you to create a new Configuration file. In there, put in the information for the second database you need (you created a connection to the first database when you install MySQLDumper). Save it. Then you can click Restore where you can select the dump of the first database and restore it in the second one.
This was a lifesaver. Thanks!
increase
max_post_size
variable in php.ini file. Then you will be able to download it.
I had a different issue when I was downloading from phpmyadmin in the middle like 180MB download stops with message - network error
So I used ssh connection which you can find in your cpanel sometimes they provide browser based terminal or sometime you have to access it using putty .
In terminal I go inside my public_html folder where all my files are stored . Followed by this command:
mysqldump -u [username] -p [database-you-want-to-dump] > [path-to-place-data-dump.sql]
This did the job in few minutes and saved a sql file in my public_html folder. Then I opened the folder in File manager and downloaded it from there.
You can also use FTP or you can download it directory by accessing by url.
Make sure you delete it after your download finishes.
I have a hard disk that MySQL 5 has been installed on it (this hard disk belongs to another PC with Windows XP) and I've connected it to my PC. How can i copy its MySQL data to another MySQL 5 ??
thanks in advance.
you can try this.
Shut down both mysql server.
Locate the mysql data directory (e.g. /. If your database use myisam as engine you will find for any database a folder. In this folder are the files for each table, indexfiles and datafiles. Copy the folder to the data directory on your pc.
Start your mysql server.
PS: Check the version of both servers.
Or you can use mysqldump this is an command line utility for mysql. After export copy the export file to your server and use this command:
mysql -u<username> -p<password> < <exportfilename>
Kind Regards