Recovery

Performing a recovery

5.2.1Automatic Recovery for an Optional Point in Time

This section documents the use of the ora_recut command with the aid of which you can automatically recover a specific database level (recovery until time).

In order to recover a specific database level you can use the following command:

ora_recut [<ORA-SID>][-t <time>] [-v]

The ORACLE ID <ORA-SID> only needs to be specified if there is more than one database. If the -t option is used to define a point in time (format yyyy-mm- dd:hh:mm:ss,i.e., for instance: 1997-11-27:22:00:00) the ora_recut command will attempt to roll back the database to precisely that moment. If you do not enter a time here, then ora_recut will prompt you for a time presently. The -v option enables the output of additional information.

The following prerequisites must be met so that ora_recut can be used:

The database must be physically sound (operable) because ora_recut needs to query the position of the control files.

All the servers and device servers used for the backups have to be active.

The last full recovery made before the required point in time using

${ORACLE_SID}_full_save has to have run under Version 3.0 of NSR-ORA or higher.

If OPS is being used, you must pay attention to some further prerequisites (see section “Recovery with ORACLE Parallel Server (OPS)” for further information).

! With the automatic recover until time you cannot use backups which are distributed on several days of the week.

In order to restore a specific database level with these prerequisites you must carry out the following steps:

1.Specify the time.

2.Start ora_recut:

# ora_recut [<ORA-ID>] [-t <time>]

If ora_recut requires further information, you will be prompted to enter it. Basically ora_recut runs fully automatically. Only if errors occur that ora_recut cannot solve on its own, does an error message appear and you are informed that you can attempt to solve the problem yourself, for instance:

The database hadn’t gone down in 5 minutes

System Administrator’s Guide

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3Com NSR-ORA V3.2 manual Automatic Recovery for an Optional Point in Time, Start orarecut

NSR-ORA V3.2 specifications

The 3Com NSR-ORA V3.2 is a versatile networking solution designed to enhance connectivity and streamline data management across various enterprise environments. With the rapid evolution of digital communication, 3Com recognized the need for a robust system that caters to the demanding requirements of today's businesses. The NSR-ORA V3.2 is specifically engineered to provide optimal performance, scalability, and reliability.

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Security is at the forefront of the NSR-ORA V3.2's design. The device incorporates advanced security features such as firewall protection, intrusion detection, and secure VPN capabilities. These components work together to safeguard sensitive information and ensure that data integrity is maintained across the network. In addition to these features, the device offers comprehensive management tools, allowing network administrators to monitor performance and manage access controls more effectively.

The NSR-ORA V3.2 also excels in its interoperability with various devices and platforms, making it an ideal choice for enterprises that utilize a mix of legacy systems and modern technologies. Its compatibility with both wired and wireless networks provides businesses with the flexibility to design an infrastructure that meets their specific operational needs.

In summary, the 3Com NSR-ORA V3.2 is a powerful networking solution that combines advanced processing capabilities, robust security features, and a high degree of compatibility with diverse systems. Its emphasis on performance and scalability makes it a compelling choice for organizations seeking to enhance their network infrastructure in an ever-evolving digital landscape.