WRITE_DATALIST:Writing Multiple Data Items to a Cache Structure

You can use the WRITE_DATALIST request to specify that data should be written to the cache structure for a given set of entries for the connection identified by CONTOKEN. Using this request type provides performance benefits by reducing the number of accesses to the coupling facility.

The data to be written is described by a write-operation-block, which contains the relevant information to describe the attributes of the write operation. The result of the write operation is contained in the write-operation-response-block, which contains the relevant information about the completion of the write request.

The number of write-operation-blocks that can be specified is dependent upon whether BUFFER or BUFLIST is specified.

The WRITE_DATALIST request type is valid only for a structure allocated in a coupling facility of CFLEVEL=12 or higher.

Guide to the Topic

WRITE_DATALIST:Writing Multiple Data Items to a Cache Structure is divided into two topics.

The first topic, IXLCACHE Functions for WRITE_DATALIST, applies to all WRITE_DATALIST requests and includes the following major topics:

The second topic, Writing a list of data items: Summary summarizes a procedure for defining a list of data items and writing them to the cache structure.