Glossary

online redo log (Oracle specific term) Redo logs that have not been archived, but are either available to the instance for recording database activity or are filled and waiting to be archived or reused.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.OpC

See OVO.

OpenSSH

A set of network connectivity tools used to access remote machines securely, by using a variety of authentication and encryption methods. It needs to be installed and configured on the Installation Server and the client if you perform remote installation using secure shell.

Oracle Data Guard (Oracle specific

term)

Oracle Data Guard is Oracle’s primary disaster recovery solution. Oracle Data Guard is able to maintain up to nine standby databases, each of which is a real-time copy of the production (primary) database, to protect against corruptions, data failures, human errors, and disasters. If a failure occurs on the production (primary) database, then a failover to one of the standby databases which becomes the new primary database is possible. In addition, planned downtime for maintenance can be reduced because the production

processing can be moved from the current primary database to a standby database and back quickly.

Oracle instance (Oracle specific term) Each installation of an Oracle database on one or more systems. One computer system can have several instances of a database running.

ORACLE_SID (Oracle specific term) A unique name for an Oracle Server instance. To switch among Oracle Servers, specify the desired <ORACLE_SID>. The <ORACLE_SID> is included in the CONNECT DATA parts of the connect descriptor in a TNSNAMES.ORA file and in the definition of the TNS listener in the LISTENER.ORA file.

original system

The system configuration backed up by Data Protector before a computer disaster hits the system.

overwrite

An option that defines one mode to resolve file conflicts during restore. All files are restored from a backup even if they are older than existing files.

See also merging.

OVO

HP OpenView Operations for Unix provides powerful capabilities for operations management of a large

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