HANA replication LOG retention statistics

Log retention is important in the replication mechanism as it defines the capacity of the primary
 system to absorb and store changes waiting to be sent toward the secondary system. 
If logs are produced quicker than consumed for a long time, the replication will be compromised.
 This monitor will detect those situations and send alarms so you can react before replication stops.

Configuration hints

Create new rule in the table. You can customize the filter in order to define a specific configuration for a given service or host.

Minimum retention time

  • The minimum time expected before reaching the retention limit parameter settings. Send an alarm if below threshold

Minimum time before disk full

  • The minimum time expected before a disk full situation. Send alarm if below threshold

Max LOG backup avg. daily size

  • The maximum average size of generated log backup on a daily basis, computed over a configurable period.
  • Send an alarm if the average size is over a limit.
  • This is an indicator of a growing number of changes to replicate.

Atomic fields

Nb of days for computing average periodDefines the period to compute average backup size

Surveillance table

ActiveTo enable/disable a rule
HostA filter on the host
ServiceA filter on the service
Minimum log retention timeThe minimum time expected before reaching the retention limitparameter settings.
Minimum time before disk fullThe minimum time expected before a disk full situation
Maximum average log size per dayThe maximum average size of generated log backup on a daily basis
SeverityThe severity of the generated alert.
Auto clearIf checked, the alarm will be cleared as soon as the alarm condition is not met anymore
Alarm tagThis field allows to add custom text within the alarm message. %MSG% variable will containthe actual generated message and can be used such as: “my_prefix %MSG% my_suffix”. By default, tagwill be used as prefix.
enable AlarmTo enable alarm sending
enable QOSTo enable metric sending

Generated metrics

REPLICATION_LOG_RETENTION_REMAINING_DAYSDaysHOST:PORTSends the remaining days before reaching retention limit
REPLICATION_LOG_BACKUP_DAILY_AVG_SIZEMegabytesHOST:PORTSends average size of daily LOG backup
/home/clients/8c48b436badcd3a0bdaaba8c59a54bf1/wiki-web/data/pages/products/promonitor/6.8/monitorsguide/hana/hanareplicationlogretentionstatistics.txt · Last modified: 2024/05/01 18:35 (external edit)