Release: Amazon Relational Database Service on 2010-03-22

Release Notes>Amazon RDS>Release: Amazon Relational Database Service on 2010 03 22
New AWS SDK for Java.


Submitted By: cheriaws
Release Date: March 22, 2010 12:00 AM GMT
Latest Version: 2009-10-16
Created On: March 22, 2010 5:17 PM GMT
Last Updated: March 23, 2010 12:07 AM GMT

New Features

AWS SDK for Java AWS now provides a Java SDK that covers Amazon RDS and other AWS products. The SDK provides basic functions not included in the Amazon RDS API, such as request authentication, request retries, and error handling. For more information about the AWS SDK for Java, go to

Known Issues

InnoDB engine support only Amazon RDS automated backups and DB Snapshots are currently supported for the InnoDB engine only. Use of these features with other MySQL engines, including MyISAM, may lead to unreliable behavior while restoring from backups. Specifically, since storage engines like MyISAM do not support reliable crash recovery, your tables can be corrupted in the event of a crash. For this reason, we encourage you to use the InnoDB storage engine. If you choose to use MyISAM, you can attempt to manually repair tables that become damaged after a crash using the REPAIR command (see: However, as noted in the MySQL documentation, there is a good chance that you will not be able to recover all your data. If you wish to take DB snapshots with MyISAM tables, follow these steps:

(1) Stop all activity to your MyISAM tables (i.e., close all sessions).

(2) Lock and flush each of your MyISAM tables.

(3) Issue a CreateDBSnapshot API call or use the RDSCLI rds-create-db-snapshot command. When the snapshot has completed, release the locks and resume activity on the MyISAM tables.

These steps force MyISAM to flush data stored in memory to disk thereby ensuring a clean start when you restore from a DB snapshot.

Finally, if you would like to convert existing MyISAM tables to InnoDB tables, you can use alter table command (e.g., alter table engine=innodb;).

To find out the list of MyISAM tables owned by you, you can run the following query:
"select table_schema, table_name from information_schema.tables where engine='MyISAM' and table_schema not in ('mysql','information_schema');
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