Explaining and providing solutions of MySQL error 1449: The user specified as a definer does not exist using SQL SECURITY INVOKER and DEFINER.

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Backup ... backup... Backup... but of course.. you also need to monitor and test those backups often otherwise they could be worthless.  Having your MySQL binlogs enabled can certainly help you in times of an emergency as well.  The MySQL binlogs are often referenced in regards to MySQL replication, for a good reason, they store all of the queries or events that alter data (row-based is a little different but this an example). The binlogs have a minimal impact on server performance when considering the recovery options they provide.


[anothermysqldba]> show variables like 'log_bin%';
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At times you’ll find yourself responsible for generating test data for newly created tables for testing or sampling purpose. There are tools that will generate random data for you but…

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