Saturday 20 July 2013

Storage-Properties-in-Hyperion-Essbase

Essbase - Consolidation Storage Properties:



In oracle essbase data storage properties will be defined where and when consolidations are stored. For example members are tagged as store data then Essbase sums the values of store data members and stores the result at parent level.

 
Total we have six storage properties in Essbase:

1) Store data

Store data property is a default storage property, when we load the data in to essbase will store values in the cell. Store the data values with member.

2) Dynamic Calc

When we tag any member as a dynamic calculation the values are never stored in the cell, but values are dynamically retrive in the reports. The data associated with the member is not calculated until requested by a user. The calculated data is not stored. 
                   Dynamic calculation options allow outline members to be calculated when requested by users rather than during the batch calculation process.

Advantages:
Memory saved.
Calculatin would be fast.
Backup would be fast.
Retriveng would be fast.
Disadvantages:
Reprt performance would be slow.

3) Dynamic Calc and Store

When we tag any member as dynamic calc and store, the value is does not store the first time. However the value is dynamically retrived and stored in the block. Would not calculate the data value until a user
requests it, and then store the data value.

Advantages:
Memory saved.
Calculatin would be fast.
Backup would be fast.
Retriveng would be fast.
Disadvantages:
Reprt performance would be slow.

4) Shared member

The shared member storage property provides a way to reuse data that essbase has indexed or calculated. Shared members, instead of storing data in multiplies places, create a pointer to a stored member. The data value associated with shared member comes from different member having the same name. Shared member is also called alternative hierarchy.

Conditions of shared member:
Shared members should not have children below it.
The original member and shared member should be in the same dimension and original member should be created first only then we can create shared member.
We do not have any formulas, attributes and UDA's to the shared members.

5) Never share

The data associated with the member is duplicated with the parent and its child if an implied shared relationship exists.

6) Label only

Label only used for all grouping pupose or navigating purpose and we would not tag a 'level 0' as lable only. Although a label only member has no data associated with it, it can display a value. 
The label only tag groups members and eases navigation and reporting. Typically, label only members are not calculated.