Let’s start this discussion candidly – I am a big fan of the FETCH FIRST n ROWS ONLY clause coded in a SQL statement. That assertion will require some clarification, since there are some valid use cases, and others that make little sense. Regardless, I will try not to over-complicate the discussion.
In this article we are going to examine some tuning options that a DBA has available to help improve dynamic SQL performance on DB2 LUW.
IBM® Data Server Manager is an integrated database management tools platform. In this article, learn how to use the Query Tuning functionality that is included with the Base edition of DSM at no additional charge to tune the queries running in your DB2® for z/OS® environment.
Performance problems can be tough to solve, especially if you've not had to deal with them much before. In this session from IDUG NA 2016, Steve Rees goes through a step-by-step, decision tree-based approach for tackling performance problems.
IDUG Content Committee member describes improvements in BLU performance in DB2 for LUW V11.1