5.1.1.3 Resource Assignment Methods

You can use shares or allocations to assign resources in an IORM plan.

A share value represents the relative importance of each entity. With share-based resource allocation, a higher share value implies higher priority and more access to the I/O resources. For example, a database with a share value of 2 gets twice the resource allocation of a database with a share value of 1.

Valid share values are 1 to 32, with 1 being the lowest share, and 32 being the highest share. The sum of all share values in a plan cannot be greater than 32768.

Share-based resource allocation is the recommended method for the interdatabase plan (dbplan). For the cluster plan (clusterplan), share-based resource allocation is the only option.

With allocation-based resource management, an allocation specifies the resource allocation as a percentage (0-100). Each allocation is associated with a level. Valid level values are from 1 to 8, and the sum of allocation values cannot exceed 100 for each level. Resources are allocated to level 1 first, and then remaining resources are allocated to level 2, and so on.

Though not recommended, allocation-based resource management can be used in the interdatabase plan (dbplan). For the category plan (catplan), allocation-based resource management is the only option.