Deleting Data Items and Reclaim Processing

For data items in the cache structure that users no longer need to access, you can use IXLCACHE REQUEST=DELETE_NAME or REQUEST=DELETE_NAMELIST. These requests delete the data item from the cache structure and free the allocated resources. Deleting a data item from the cache causes the system to automatically invalidate the locally cached copy of the data item for all users. For more information about deleting data items, see DELETE_NAME: Deleting Data Items From a Cache Structure and DELETE_NAMELIST: Deleting a List of Data Items.

If a user wants to deregister interest in a data item, the user does not invoke the DELETE_NAME or DELETE_NAMELIST request. To deregister interest, the user can register interest in another data item, and specify the vector index that is currently assigned to the original data item. The user also reassigns the local cache buffer to the new data item. For a complete description, see the following topics on registering interest in a data item:

Registering Interest in the Data Item for WRITE_DATA Requests
Registering Interest in the Data Item for READ_ DATA Requests
Registering Interest in the Data Item for CASTOUT_DATA Requests.