Remote Query Performance
There are many ways to improve the performance of remote queries. We take a look at some of those options in the next sections.
OPTIMIZE FOR n ROWS
Use of the OPTIMIZE FOR n ROWS for distributed applications to limit the number of rows returned in a DRDA client query block so that only a portion of the answer set is fetched. It can also optimize cases when a large number of rows are fetched by allowing a client to request multiple query blocks from a DRDA requester in a single network transmission. This allows you to specify the number of query blocks to retrieve.
OPTIMIZE FOR n ROWS is supported for result sets returned by a SELECT statement or by a stored procedure. DRDA Level 3 is implemented to provide the client ...
Get DB2® Universal Database™ for OS/390™ v7.1 Application Certification Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
