User Defined Collection (UDC) Wizard - History Model
This window determines the quantity and granularity of data stored for historical analysis.
Select the history level most appropriate for your system characteristics and needs. The data model selected determines the short term and long term space requirements.
|
Level |
Select When... |
|
Entry |
Uses less disk space. Top offenders still visible. High resolution data is saved for a short period only. |
|
Standard |
Suitable for most collections. Optimal combination of accuracy, granularity and space consumption. |
|
High Volume |
For collections of intensive activity (thousands of SQL executions per minute) and for which most of the activity is to be recorded. Offers high granularity at a cost of large disk space requirement. |
|
Custom |
Advanced Users only. Tailor the aggregation options to meet your needs. See Custom Configuration. |
Disk Space
Short term historical data is stored in files (in the middleware). The entire space is claimed at the time of installation. The Data directory (located on the middleware host) contains the history data files. This space is claimed during collection creation and therefore the directory should have sufficient free space to hold the indicated amount of required data.
When the amount of disk free space is lower than the estimated
required amount, the free space indicator is marked in red and you must
either select a less demanding history model (or manually customize) or
find a sufficient data directory location. Either manually enter the data
directory, or use the browse (
) option.
Until sufficient space is found on the data directory, you are prevented from proceeding with the collection creation.