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15-5
User Guide for Cisco Secure Access Control System 5.4
OL-26225-01
Chapter 15 Managing System Operations and Configuration in the Monitoring and Report Viewer
Configuring Data Purging and Incremental Backup
only the log collector services during compress operation and will be up and running after the compress
operation is completed. You need to enable the log recovery feature to recover the log messages that are
received during the database compress operation.
In ACS 5.4, database compress operation is automated. You can check the Enable ACS View Database
Compress check box to compress the ACS View database automatically every day at 5 A.M. The
database compress operation is run everyday automatically at 5 A.M whenever there is a need.
Note You need to enable the log recovery option to recover the log messages that may be received during the
database compress operation. If the log recovery feature is not enabled, then ACS sends an alert message
to enable the log recovery feature.
The following database limitations apply for ACS database compress:
• An automatic database compress operation is started the forthcoming day at 5 A.M as soon as the
database size is greater than 80 percent of allocated view database size.
• ACS displays an alert message when the difference between the physical and actual size of the view
database is greater than 7 percent of the allocated view database size and less than 36 percent of the
allocated view database size. Also, an automatic database compress operation is triggered when the
size of the database exceeds 80 percent of allocated view database size to avoid disk space issues.
• ACS displays an alert message when the difference between the physical and actual size of the view
database is greater than 36 percent of the allocated view database size.
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If the log recovery feature is not enabled and the ACS view database compress option is enabled,
an automatic database compress operation is triggered only after enabling the log recovery
feature when the size of the database exceeds 80 percent of allocated view database size to avoid
disk space issues.
–
If the log recovery feature and the ACS view database compress option are enabled, an
automatic database compress operation is started to avoid disk space issues. The log collector
services are shut down during this operation and will be up and running after the compress
operation is completed. Since you have log recovery feature enabled already, any log messages
that are received during the database compress operation are recovered after the log collector
services are up and running.
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If the log recovery feature and the ACS view database compress options are not enabled, ACS
does not trigger any database compress operation. But, if the size of the database exceeds 80
percent of the allocated view database, an automatic database compress operation is triggered
only after enabling the log recovery feature to avoid disk space issues.
–
If the log recovery feature is enabled, and the ACS view database compress option is not
enabled, an automatic database compress operation is started when the size of the database
exceeds 80 percent of allocated view database size limit to avoid disk space issues. The log
collector services are shut down during this operation and will be up and running after the
compress operation is completed. Since you have log recovery feature enabled already, any log
messages that are received during the database compress operation are recovered after the log
collector services are up and running.
Note It is recommended to perform database compress during the maintenance hours. DB compress may take
long time depends on the database size. Database compress should be done after the purge operation gets
completed.