Nortel Networks FP1 Manuale Utente Scaricare il pdf (Pagina 73)

Security and Administration 73

Nortel Networks Confidential

Backups should be scheduled during off-peak hours. The default time

is 2:00 a.m.

If a backup fails, the log files display the probable cause of the failure

and any available explanatory information. To view the log files,

double-click a failed job displayed in the OEM Console. See also

“Monitoring backups” on page 20.

This section contains the following backup procedures:

• “Backing up parameter files” on page 73

• “Backup job setup” on page 74

• “Modifying a scheduled backup job” on page 82

Oracle Enterprise Manager backups

Use the procedures listed in this section to schedule backups. This

section explains the generic method for backing up the Database

Module using the Oracle Enterprise Manager (OEM).

Similar methods are used to schedule any kind of backup job, the only

difference being the script name and the parameters used.

Backing up parameter files

The following procedure is necessary to backup database parameter

files on the primary and secondary databases. The (.keep) versions are

created in case the original file is corrupted.

Note: Execution of this backup procedure is required only when the

version of the Oracle database changes.

Individual data files cannot be

recovered

Individual data files can be

recovered

Longer recovery time Shorter recovery time

CAUTION

To avoid risk of data loss, always backup data to

external media and use consistent and regular

backup procedures.

Table 10 Comparing backup and recovery methods

Export/Import method RMAN method

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 95 96

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Nortel Networks FP1 Manuale Utente Pagina 73