Why use RUNSTAT Utility?

Answer Posted / sajjan jindal

IT is a DB2 utility used to collect statistics about the
data values in tables which can be used by the optimizer to
decide the access path. It also collects statistics used
for space management. These statistics are stored in DB2
catalog tables.

The RUNSTAT is executed after a load, or after mass
updates, inserts, deletes, or after REORG.

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