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Tuning, Troubleshooting, Security, and Maintenance
System Maintenance
If you are considering using the automated method to backup your data,
you should take into consideration the following advantages and
disadvantages:
• there is no need to exit the ITO GUI, although OVW actions are not
possible for a short time, for example; starting applications in the
Application Desktop window.
• ITO server processes, ITO Operator Web GUI, trouble ticket and
notification services remain fully operational.
• a partial recovery of the Oracle database is possible, for example:
• up to a given time
• individual damaged tablespaces
• Oracle's archive-log mode must be enabled, which means:
• reduced overall performance
• more disk space required
• no binaries are backed up
Temporary files such as queue files are excluded from the backup. When
the backup starts, the ITO GUI pops up a notification window and some
OVW maps remain blocked for the duration of the backup. Any task that
cannot be completed before the backup starts remains idle until the
backup is finished and then resumes and completes.
Note that the backup does not include Oracle's online, redo, log files,
which cannot be backed up while the database is running. However,
Oracle does allow you to mirror these files on different disks so that they
can be recreated in the event of problems. Refer to the Oracle
documentation for more details.
The scripts provided by ITO for automated backups use Oracle's online
backup method, which requires the database run in archive-log mode.
Oracle's archive-log mode is not the default setting for the Oracle
database: it has to be configured manually. Briefly, in archive-log mode,
Oracle stores any changes to data files between full backups in
numbered redo log files. The redo log files are used in the event of a
crash to restore a configuration from the most recent, full backup. For
more information see Oracle's product documentation. To enable
archive-log mode in Oracle:
1. Close all ITO open sessions, and stop ovw. Enter: ovstop
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Chapter 10
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Table of Contents
Troubleshooting
