Under which condition(s) does IORM manage Exadata cell resources?
A.
All the time
B.
When there are IORM resource plans In place
C.
When there are more than one resource group for a cell
D.
When I/O requests start to saturate the cell
E.
When I/O requests start to saturate the cell and there is more than one resource group defined
for the cell
Explanation:
The inter-database I/O allocations are defined within the software in the Exadata cell
and managed by the I/O Resource Manager (IORM).
The Exadata cell software ensures that inter-database I/O resources are managed and properly
allocated within, and between, databases. Overall, DBRM ensures each database receives its
specified amount of I/O resources and user defined SLAs are met.
In essence, Exadata I/O Resource Manager has solved one of the challenges traditional storage
technology does not address: creating a shared grid storage environment with the ability to
balance and prioritize the work of multiple databases and users sharing the storage subsystem.
Exadata I/O resource management ensures user defined SLAs are met for multiple databases
sharing Exadata storage. This ensures that each database or user gets the correct share of disk
bandwidth to meet business objectives.
http://docs.google.com/viewer?a=v&q=cache:4UC374GVcY8J:www.oracle.com/us/solutions/data
warehousing/039572.pdf+Overall,+DBRM+ensures+each+database+receives+its+specified+amo
unt+of+I/O+resources+and+user+defined+SLAs+are+met&hl=en&gl=in&pid=bl&srcid=ADGEESiq
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