How to identify if a DP IDB needs filenames purging?
There are two ways to identify if a DP IDB needs filename purging:
Automated: Part of the daily health check combined with the DP Reporting feature
Manual: Using DP Command line interface (CLI) or running preconfigured IDB reports
Automated discovery
By default, Data Protector checks the condition of the IDB once a day as a part of the daily health
check mechanism. The start time of the check is defined by the global file parameter DailyCheckTime.
# DailyCheckTime=HH:MM
# default: 12:30
# This option is used for starting daily checks at first
# omnitrig run after the specified time each day. Valid values
# are hour:minute, using the twenty-four hour clock notation
# Specifying “None” disables starting daily checks.
The global file is located on the DP Cell Server under:
Windows (default) C:\Program Files\OmniBack\Config\Server\Options\global
HP-UX/SUN Solaris/Linux (default) /etc/opt/omni/server/options/global
The daily check triggers an “IDB Purge Required” notification if:
• The time elapsed since the last IDB filename purge exceeds Days Last Purge [days] (default, 180
days). At the same time, either the number of filename records likely to be purged exceeds Num.
Estimated Filenames [mio] (default, 6 millions) or the estimated time needed for the purge exceeds
Estimated Time Purge [min] (default, 120 minutes).
• The number of filenames in the IDB exceeds Num. Filenames [mio] (default, 100 millions).s
The filenames purge check carried out as part of Daily Check can be system resource intensive.
Therefore, under some circumstances, it might be useful to deactivate this part of the daily health
check. It can be switched off by setting the (undocumented in DP 5.5/6.0) global parameter
DbPurgeCheck = 0:
# DbPurgeCheck = 0 or 1
# default: 1
# If this option is set (=1), IDB purge check will be included
# when daily check is started. If this option is not set (=0),
# IDB purge check will be skipped. DbPurgeCheck=0
If the purge check is switched off as part of the daily health check it needs to be executed manually
on a regular basis.
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