statistics policies. Review the number of objects that are assigned to statistics policies and
ensure the polling and retrieval periods are set such that the numbers will remain below
the stated guidelines.
Using SAM Server Performance Statistics, 5620 SAM can assist in determining how
many polled and accounting statistics are being collected.
5620 SAM performance can be adversely affected by increasing the number of historical
statistics entries recorded by the 5620 SAM. 5620 SAM system impacts include increased
time listing log records from the GUI and OSS clients, increased Oracle tablespaces, and
increased database backups times.
Statistics record retention
The table below shows the different retention rates that are achievable depending upon
the collection rate and statistic type.
Table 6-13 Maximum statistics interval retention - SAM Database
Statistics Type Total Number of statistics
records to be stored in the
Database
Maximum number of
retention intervals
Performance <40M 672
>40M 96
Accounting <40M 672
>40M 16
Table 6-14 Maximum statistics interval retention - Auxiliary Database
Statistics Type Total Number of statistics
records to be stored in the
Database
Maximum number of
retention intervals
Performance <5,376M 17,520
>5,376M 1,344
Accounting <80,640M 17,520
>80,640M 1,344
When using the logToFile method only, for collection, the maximum retention of data on
the file system is 600 minutes (10 hours).
Scaling
Scaling guidelines for statistics collection
Statistics collection
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5620 SAM
3HE-09809-AAAG-TQZZA 13.0 R7
Issue 1 December 2015
6-15
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