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Backing up your database
Retaining old disk backups
Two ways to run BACKUP
Estimating Media Capacity
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overwrites existing disk files of the same name. If you need to retain
BACKUP
a backup, when you create a new backup either use different file or path names
for the archive devices, or move the old backup to another location before
starting the backup.
You can run
in two ways:
BACKUP
•
Attended. In attended mode,
and prompts you to mount the archive media when necessary. With this
method, you must run
•
Unattended. In unattended mode,
present, and does not issue prompts. Instead, you must make appropriate
estimates of the space required, and set up your devices accordingly. Any
error is considered fatal.
In some cases, you can use third party software to create backups. Such
products can be particularly useful for unattended backups. See "Unattended
backup" for details if you want to run backups when no operator is present.
Note
You can run
BACKUP
Interactive SQL.
Before you do a backup, be sure that your archive media has sufficient space.
When you estimate available space on disk or tape, keep in mind these rules:
•
You need enough room for a full backup of the Catalog Store, as well as
the full or incremental backup of the IQ Store. If your Catalog Store holds
Adaptive Server Anywhere data in addition to the Adaptive Server IQ
system tables, you need room to back up this data as well.
•
You do not need to include space for the transaction log, as this log is not
backed up.
•
For tape backups, the first tape set you specify must be able to hold the full
backup of the Catalog Store, including any non-IQ data in the Catalog
Store. (A tape set consists of one or more backup tapes produced on a
given archive device.)
assumes that an operator is present,
BACKUP
interactively from the command line.
BACKUP
assumes that no operator is
BACKUP
from a batch script or procedure, as well as from
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