The individual Components

The Backup Component

3.2.4Checking backups (troubleshooting)

If an error occurs when backing up the database or if one of the backup pro- cesses does not end cleanly, the entire database backup is aborted and all tablespaces are reset to the status NoSave.

You can check whether a backup has been completed successfully by examining the protocol files (*.prot) which are located in the directory /nrs/oracle/${ORACLE_SID}/prot and its subdirectories.

Log files from local backups (not for NAS filers)

This file directory contains two protocol files:

In the file save_history you will find an overview of the backups that have been carried out. For each backup of a tablespace or redolog file, it contains a record of the date and time, the name of the backed up tablespace or redolog, whether the backup was online or offline and the result of the backup. You should examine this file regularly to check that backing up the redolog files is being performed correctly.

The file actual_saves_of_tablespaces contains the output of the shell script saveinfo.sh from the most recent tablespace backup (see below). When you evaluate this file, note the date of the backup. It always shows the most recently completed backup, even if this was some time ago.

! If there are error messages in this file (or in the output from saveinfo.sh ) you should first check the individual protocol files, which are described below; this will often give you more information about the encountered error.

In the NetWorker windows you will find information about any problem which NetWorker encountered while backing up the tablespaces or redolog files, e.g. problem regarding access to tapes or devices.

If you encounter an error that is related to ORACLE you should also check your database.

The subdirectory tablespaces contains a protocol file for each backed up tablespace. These files have names of the form save_${ORACLE_SID}_${TS}.prot, where ${TS} stands for the name of the tablespace. There is also the file save_${ORACLE_SID}_overview.prot, which contains any information regarding the backups that does not relate to a particular tablespace. The protocol files in this subdirectory are overwritten by each new backup.

System Administrator’s Guide

U42252-J-Z915-1-76

Page 19
Image 19
3Com NSR-ORA V3.2 manual Checking backups troubleshooting, Log files from local backups not for NAS filers

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.

One of the standout features of the NSR-ORA V3.2 is its integrated network processing capabilities. This device employs advanced multi-layer switching technology that significantly boosts data throughput while maintaining low latency. This is particularly advantageous for organizations that rely on real-time data transmission for critical applications, such as VoIP and video conferencing. The ability to process large volumes of data efficiently ensures that businesses can operate seamlessly without disruptions.

Another key characteristic of the NSR-ORA V3.2 is its support for a wide range of networking protocols. The device is compatible with both IPv4 and IPv6, allowing businesses to transition smoothly to newer network architectures without the need for significant reconfiguration. This dual-stack capability not only enhances network flexibility but also future-proofs investments as organizations look to scale and adapt their digital infrastructure.

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.