If the data file contains all necessary things, and the remote links indicate correct positions in the data file, as a result of this command the table will be repaired. In this case, the index file will be corrected without changing the database file. Where, -r -q – is the quick recovery mode. So, in order to recover a damaged table use the command: That is why before using this command it is beter to create a backup of the table file which you are going to recover. myd file, with further replacement of the damaged file with this file. Myisamchk works by way of debugging and creating a copy of. To recover damaged MyISAM tables, you can use the command myisamchk.
MyISAM tables of a MySQL database can be damaged as a result a sudden interruption of a record process or a computer shutdown, hardware and software errors and failures, and also when trying to debug the table used by the server with the help of myisamchk.Īs a result of damage, data can disappear from the table or be wrongly represented, but most often damage to the table results in an error like this: «Incorrect key file for table: ‘table_name’. Recovering Damaged MySQL Databases With The Help of Myisamchk
#News rover what is recreate database archive
In the same way, you can recover lost dump files (*.sql) or its archive (*.zip, *.gzip, *.bzip2). If the user failed to create a copy of database files beforehand, they can be recovered with Hetman Partition Recovery, and then be sent to the necessary folder using the method described above. If for some reason you deleted a MySQL database, reinstalled Windows or formatted a hard disk, everything can be restored by usig the method described above, by putting the previously copied database files into the folder with the name of the database:Ĭ:\ProgramData\MySQL\MySQL Server 5.7\Data Recovering a Lost or Deleted MySQL Database It is possible to recover MySQL database table information by putting the previously copied structure files and data files into the folders of already existing bases (in our case, these are two bases: my_db и my_db2).Creating a copy of MySQL table database is possible by copying structure files and data files (*.opt, *.frm, *.myd, *.myi for MyIsam *.opt, *.frm, *.ibd for InnoDB) and savig them into another folder.
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Advanced users or those who failed to use the backup functions for MySQL databases will also be interested in how to create backups and restore databases manually, by using the abovementioned structure files and table data: However, these functions apply more to creatig backups of MySQL data with the help of built-in tools.
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