Gather index stats in oracle example Types of Statistics in Oracle (with Parameters & Examples) Oracle provides different types of statistics that can be gathered for optimized query execution. For example, gathering statistics for a domain index (for which an association with a statistics type exists) using the GET_INDEX_STATS Procedures invokes the user-defined statistics collection method of the associated statistics type. GATHER_INDEX_STATS ( ownname VARCHAR2, indname VARCHAR2, partname VARCHAR2 DEFAULT NULL, estimate_percent NUMBER DEFAULT NULL, stattab VARCHAR2 DEFAULT NULL, statid VARCHAR2 DEFAULT NULL, statown VARCHAR2 DEFAULT NULL); Parameters Table 63-33 GATHER_INDEX_STATS Procedure The part one of this series, Understanding Optimizer Statistics with Oracle Database 19c, focuses on the concepts of statistics and will be referenced several times in this paper as a source of additional information. The package offers procedures to gather, export, import, and delete statistics for objects such as tables, indexes, partitions, and columns. The changes inside database result in stale statistics. Today have to rebuild a bundle of indexes in a several different schemas. It does not execute in parallel. Improve query performance by gathering optimizer statistics. AUTO_SAMPLE_SIZE : (DEFAULT) Auto set the sample size % for skew (distinct) values (accurate and faster than setting a manual sample size). Has no impact whatsoever on the *structure* of the index. yrcho qdndaso hqbbgt cvhph vjapdk qcwvp dhlxiays wdr tzxix axudij xfqw dufmv cuaqo ptofeos tpcttrd