# Restoring backup

To restore a Nextcloud installation there are four main things you need to restore:

1. The configuration directory

2. The data directory

3. The database

4. The theme directory

Note

You must have both the database and data directory. You cannot complete restoration unless you have both of these.

When you have completed your restoration, also make sure to run the maintenance:data-fingerprint command afterwards, to ensure your sync clients can recover from the restored backup.

## Restore folders

Note

This guide assumes that your previous backup is called “nextcloud-dirbkp”

Simply copy your configuration and data folder (or even your whole Nextcloud install and data folder) to your Nextcloud environment. You could use this command:

    rsync -Aax nextcloud-dirbkp/ nextcloud/

## Restore database

Warning

Before restoring a backup you need to make sure to delete all existing database tables.

The easiest way to do this is to drop and recreate the database. SQLite does this automatically.

### MySQL

MySQL is the recommended database engine. To restore MySQL:

    mysql -h [server] -u [username] -p[password] -e "DROP DATABASE nextcloud"
    mysql -h [server] -u [username] -p[password] -e "CREATE DATABASE nextcloud"

If you use UTF8 with multibyte support (e.g. for emojis in filenames), use:

    mysql -h [server] -u [username] -p[password] -e "DROP DATABASE nextcloud"
    mysql -h [server] -u [username] -p[password] -e "CREATE DATABASE nextcloud CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci"

### PostgreSQL

    PGPASSWORD="password" psql -h [server] -U [username] -d template1 -c "DROP DATABASE \"nextcloud\";"
    PGPASSWORD="password" psql -h [server] -U [username] -d template1 -c "CREATE DATABASE \"nextcloud\";"

## Restoring

Note

This guide assumes that your previous backup is called “nextcloud-sqlbkp.bak”

### MySQL

MySQL is the recommended database engine. To restore MySQL:

    mysql -h [server] -u [username] -p[password] [db_name] < nextcloud-sqlbkp.bak

### SQLite

    rm data/owncloud.db
    sqlite3 data/owncloud.db < nextcloud-sqlbkp.bak

### PostgreSQL

    PGPASSWORD="password" psql -h [server] -U [username] -d nextcloud -f nextcloud-sqlbkp.bak

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