WMCPA Spring Conference 2017

SQL becomes more and more the standard for accessing data in physical files or SQL tables. Contrary to native I/O where the programmer specifies a physical or logical file that is to be used, with SQL the Optimizer decides which or if any index is used or if the complete table/file is read. Long running queries are a nuisance. IBM i Navigator as well as Access Client Solutions (ACS) provide multiple interfaces for recording information about SQL queries and for analyzing the collected data, such as Visual Explain, SQL Plan Cache (Snapshots) or SQL Performance Monitors. All advised indices from both query engines (SQE and CQE) are recorded along with information about how often and when an index was used for the last time. With IBM i Navigator and ACS those information can be accessed and necessary indexes immediately created.