InnoDB Database Recovery Techniques Peter Zaitsev (Percona) Presented at the 2009 MySQL Camp by Peter Zaitsev of Percona. Description: Have you ever had Innodb database corrupted or have deleted data accidentally and want it back ? This session will go through various approaches you can use to get most of your data back using MySQL build in features as well as third party open source tool. This session speaks about Innodb database recovery techniques (apart from recovering from back). First we will discuss various types of Innodb corruption and data loss scenarios ranging from user error to hardware failures. Then we will look at Innodb storage data structure to see what foundations does it has for corruption discovery and recovery. Then we will go into approaches one can use to recover data including: * Recovering Innodb dictionary running our of sync with .idb files * Recovering minor  []

Crash Recovery and Media Recovery in InnoDB Heikki Tuuri (Innobase / Oracle Corp.) From the official conference page at http://www.mysqlconf.com/mysql2009/public/schedule/detail/6843 InnoDB provides a reliable, true-and-tested automatic crash recovery for MySQL database users. It is based on a redo log and write-ahead logging, two techniques that are used in most of the leading database engines in the world. We will explain these techniques in depth, and present some benchmarks of the crash recovery time. InnoDBs media recovery is done from a (hot) backup of a database, using the MySQL binlog to replay the transactions just as they happened originally. We will explain the difference between MySQLs statement-based and row-based replication and binlogging, and how they should be used to ensure a successful replay of transactions.