To ensure that you can restore the data, perform the following tasks:
After you complete the backup, verify it with the archecker utility. For more information, see Verifying Backups.
ON–Bar checks for available logical-log space at the beginning of a backup. If the logs are nearly full, ON–Bar backs up and frees the logs before attempting to back up the storage spaces. If the logs contain ample space, ON–Bar backs up the storage spaces, then the logical logs.
Monitor the logs so that you can back them up before they fill. If insufficient space exists in the logical log, the database server will stop responding. If the database server stops responding, add more logical-log files and retry the ON–Bar command.
Extended Parallel Server keeps one logical log reserved for backups. That way, enough log space exists for you to back up the logical logs to free enough log space to back up storage spaces.
Copy the following database server configuration files. For more information, see Which Administrative Files to Back Up?.
To ensure the integrity of your backups, periodically verify that all database server data is consistent before you create a level-0 backup. You do not need to check for consistency before every level-0 backup. It is recommended that you do not discard a backup that is known to be consistent until the next time that you verify the consistency of your databases. For information on using the oncheck or onutil CHECK commands, see the IBM Informix: Administrator's Reference.
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