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Do I need to drop database before restore?
IMPORTANT: Before restoring a backup made before an update, you must make sure to completely empty your database. Drupal updates may rename tables or rearrange table data into new tables, and these tables typically won’t be deleted when you restore a database backup.
How do I clear a PostgreSQL database?
To delete a database:
- Specify the name of the database that you want to delete after the DROP DATABASE clause.
- Use IF EXISTS to prevent an error from removing a non-existent database. PostgreSQL will issue a notice instead.
How can I restore MySQL from a backup?
To restore a MySQL instance from a backup to a database server: Shut down the database server. Delete all files inside the server’s data directory.
Can you backup a MySQL server without stopping writing to it?
Hot – if a MySQL Server is running on an InnoDB subsystem, then you can create transactional-consistent backups without stopping writing to a MySQL Server Partial – the backup is not created for the entire DBMS, but for specific databases or tables. This is useful when different backup strategies are applied to different data.
How can I backup more than one database in MySQL?
To include more than one database in the backup dump file: On the system that hosts the database, use MySQL to create a new database. Make sure you’ve named it the same as the database you lost. This creates the foundation file that mysqldump will import the data into.
How is xtrabackup used to backup MySQL server?
Xtrabackup is an open-source utility from Percona for MySQL Server backups. Unlike mysqldump and mysqlbinlog, which creates an sql script, Xtrabackup makes a physical backup by copying the database files. Usually to copy database files, you need to turn off MySQL Server, but the peculiarity of Xtrabackup is that it can copy live database files.