Chapter 8 Frequently Asked Questions for MySQL Enterprise Backup

This section lists some common questions about MySQL Enterprise Backup, with answers and pointers to further information.


Questions and Answers

8.1: Does MySQL Enterprise Backup work with MySQL Server version x.y.z?

See Section B.1, “Compatibility with Older MySQL or InnoDB Versions” for details of compatibility between different releases of MySQL Enterprise Backup and MySQL Server.

8.2: What is the big ibdata file that is in all the backups?

You might find your backup data taking more space than expected because of a large file with a name such as ibdata1. This file represents the InnoDB system tablespace, which grows but never shrinks, and is included in every full and incremental backup. To reduce the space taken up by this file in your backup data:

8.3: What happens if apply step is interrupted?

If the mysqlbackup command is interrupted during the apply-log or apply-incremental-backup stage, the backup data is OK. The file operations performed by those options can be performed multiple times without harming the consistency of the backup data. Just run the same mysqlbackup command again, and when it completes successfully, all the necessary changes are present in the backup data.

8.4: Why is the option --defaults-file not recognized?

When you specify the --defaults-file option, it must be the first option after the name of the command. Otherwise, the error message makes it look as if the option name is not recognized.