Collection of statistics on the Db2 catalog and directory

You can use the RUNSTATS utility to gather statistics for the Db2 catalog. Db2 uses the collected statistics on the catalog to determine the access path for user queries of the catalog. You cannot run RUNSTATS on any Db2 directory objects.

The following sample shows part of the output from a RUNSTATS job on a catalog table space and its indexes:

DSNU000I   DSNUGUTC - OUTPUT START FOR UTILITY, UTILID = DSNTEX
DSNU050I   DSNUGUTC - RUNSTATS TABLESPACE DSNDB06.SYSDBASE INDEX(ALL)
DSNU610I # DSNUSUTP - SYSTABLEPART CATALOG UPDATE FOR DSNDB06.SYSDBASE SUCCESSFUL
DSNU610I # DSNUSUTS - SYSTABLESPACE CATALOG UPDATE FOR DSNDB06.SYSDBASE SUCCESSFUL
DSNU610I # DSNUSUTB - SYSTABLES CATALOG UPDATE FOR SYSIBM.SYSTABLESPACE SUCCESSFUL
 
DSNU610I # DSNUSUTB - SYSTABLES CATALOG UPDATE FOR SYSIBM.SYSSYNONYMS SUCCESSFUL
DSNU610I # DSNUSUIX - SYSINDEXES CATALOG UPDATE FOR SYSIBM.DSNDSX01 SUCCESSFUL
DSNU610I # DSNUSUIP - SYSINDEXPART CATALOG UPDATE FOR SYSIBM.DSNDSX01 SUCCESSFUL
DSNU610I # DSNUSUCO - SYSCOLUMNS CATALOG UPDATE FOR SYSIBM.DSNDSX01 SUCCESSFUL
DSNU610I # DSNUSUFL - SYSFIELDS CATALOG UPDATE FOR SYSIBM.DSNDSX01 SUCCESSFUL
 
DSNU610I # DSNUSUIX - SYSINDEXES CATALOG UPDATE FOR SYSIBM.DSNDYX01 SUCCESSFUL
DSNU610I # DSNUSUIP - SYSINDEXPART CATALOG UPDATE FOR SYSIBM.DSNDYX01 SUCCESSFUL
DSNU610I # DSNUSUCO - SYSCOLUMN CATALOG UPDATE FOR SYSIBM.DSNDYX01 SUCCESSFUL
DSNU610I # DSNUSUFL - SYSFIELDS CATALOG UPDATE FOR SYSIBM.DSNDYX01 SUCCESSFUL
DSNU010I   DSNUGBAC - UTILITY EXECUTION COMPLETE, HIGHEST RETURN CODE=0