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G-28
Glossary
On-Bar (Informix specific term)
A backup and restore system for OnLine
Server. ON-Bar enables you to create a
copy of your OnLine Server data and
later restore the data. The ON-Bar
backup and restore system involves the
following components:
• onbar utility
• Data Protector, as the backup
solution
• XBSA interface
• ON-Bar catalog tables, which are
used to back up dbobjects and track
instances of dbobjects through
multiple backups.
onbar utility (Informix specific term)
The Informix utility that communicates
backup and restore requests to OnLine
Server. The utility uses XBSA to
exchange control data and back up and
restore data with Data Protector.
ONCONFIG (Informix specific term)
An environment variable that specifies
the name of the active ONCONFIG
configuration file. If the ONCONFIG
environment variable is not present,
OnLine uses the configuration values
from the file
<INFORMIXDIR>\etc\onconfig (on
HP-UX) or <INFORMIXDIR>/etc/
onconfig (on Windows).
online backup
A backup that is performed while the
application (or database) is available for
use. Application-specific interfaces
allow backup products, like Data
Protector, to back up logical units of the
database while retaining access for the
application. In simple configurations
(non ZDB), the application remains in a
backup mode for the entire duration of
the backup. In contrast to that, for ZDB
configurations, the backup mode lasts
only for the duration of the split/
snapshot operation. After that, the
application can resume to the standard
mode. Depending on the configuration,
resource requirements vary significantly.
online redo log (Oracle specific term)
Redo logs that have not been archived,
but are either available to the instance
for recording database activity or are
filled and waiting to be archived or
reused.
See also archived redo log.
OnLine Server (Informix specific term)
Refers to INFORMIX-OnLine Dynamic
Server.
OpC
See OVO.