This approach should be a lot faster than performing the restore across the internet. Copy the backup files to an Azure blob store and perform the restore from there.Use the defer-table-indexes option in mysqlpump when you're dumping databases, so that index creation happens after table data is loaded.Avoid too much parallelism, which could cause you to hit a resource limit, and monitor resources by using the metrics available in the Azure portal. Use partitioned tables when appropriate.Enable the constraints and verify the data after the load to ensure referential integrity. Disabling foreign key checks helps improve performance. Use the disable-keys option in mysqldump when you're dumping data, to disable foreign key constraints before the load.Use the order-by-primary option in mysqldump when you're dumping databases, so that the data is scripted in primary key order.This approach results in a smaller dump file and speeds up inserts when the file is reloaded. Use the extended-insert multiple-row syntax that includes several VALUE lists.To dump large tables, combine the single-transaction option with the quick option. This is because LOCK TABLES causes any pending transactions to be committed implicitly. The single-transaction option and the lock-tables option are mutually exclusive. Dumping many tables within a single transaction causes some extra storage to be consumed during the restore. Use the single-transaction option to set the transaction isolation mode to REPEATABLE READ and send a START TRANSACTION SQL statement to the server before dumping data.Exclude triggers from dump files to avoid having the trigger commands fire during the data restore. Use the exclude-triggers option in mysqldump.To optimize performance when you're dumping large databases, keep in mind the following considerations: You can then run mysql_upgrade before you try migrating into your Azure database for MariaDB. If you need to upgrade across MariaDB versions, first dump or export your earlier-version database into a later version of MariaDB in your own environment. The mysql_upgrade command doesn't function in an Azure Database for MariaDB server, and it isn't supported. For example, if your existing MariaDB server is version 10.2, you should migrate to your Azure database for MariaDB that's configured to run version 10.2. To avoid any compatibility issues when you're dumping databases, ensure that you're using the same version of MariaDB on the source and destination systems. INSERT INTO innodb_table SELECT * FROM myisam_table ORDER BY primary_key_columns Use the clause ENGINE=InnoDB to set the engine to use for creating a new table, and then transfer the data into the compatible table before you restore it. If your tables are configured with other storage engines, convert them into the InnoDB engine format before you migrate them to your Azure database for MariaDB.įor example, if you have a WordPress app or a web app that uses MyISAM tables, first convert those tables by migrating them into InnoDB format before you restore them to your Azure database for MariaDB. Azure Database for MariaDB supports only the InnoDB storage engine, and no other storage engines. Make sure that all tables in the database use the InnoDB storage engine when you're loading data into your Azure database for MariaDB. This recommendation holds when you're moving a large amount of data, or when you want to minimize service interruption for live sites or applications. Use database dumps when you're migrating an entire database. You can use MySQL utilities such as mysqldump and mysqlpump to dump and load databases into an Azure database for MariaDB server in several common scenarios. You don't need to move the dump files to any special cloud location when you migrate data to your Azure database for MariaDB. For more information, see Configure SSL connectivity in Azure Database for MariaDB. Use an SSL-encrypted connection as a best security practice. Use these tools on your client machine with an internet connection to connect to the Azure database for MariaDB. Use common utilities and tools such as MySQL Workbench or mysqldump to remotely connect and restore data into your Azure database for MariaDB. Download and install MySQL Workbench or another third-party MySQL tool for running dump and restore commands.Install the mysqldump command-line utility.Create an Azure Database for MariaDB server - Azure portal.Dump and restore by using a command-line tool (using mysqldump).īefore you begin migrating your database, do the following:.This article explains two common ways to back up and restore databases in your Azure database for MariaDB:
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