What is metadata caching?
When modeling and maintaining a model in Cognos 8 Framework Manager it is important to consider the potential impact of metadata caching. Metadata, in the context of Framework Manager, is all the information stored within your Cognos model that describes the objects within a datasource and the manipulated objects created from your datasource. In most standard scenarios all the properties required to describe an object in Framework Manager will be captured during the import from a datasource.
However, there are times when changes to the model will result in query subjects that could potentially have varying properties. In cases where the metadata cannot be cached in the model then when running a report the information must be fetched from the datasource directly. Once the information is fetched from the datasource it will be cached for the duration of the connection to the datasource. It is important to note that retrieving the metadata from a datasource can add overhead to your complex reports.
