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MySQL Database Learning 18 Database maintenance and performance improvement

Source: Internet
Author: User
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18.1 Data Backup

Possible causes of data loss include:

    • Storage media Failure
    • User's error action
    • The server is completely paralyzed

18.1.1 Copy data file (only for tables with storage engine MyISAM)

18.1.2 mysqldump

1. Backing up a database

- - P dbname    table1 table2 ... tablen//If there is no parameter table, the entire database    is backed up > backupname.sql

2. Backing up multiple databases

- - -- databases     dbname1,dbname2,..., dbnamen    > backupname.sql

3. Back up all databases

- - -- all-databases    > backupname.sql

18.2 Data Restore

MySQL Database Learning 18 Database maintenance and performance improvement

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