What is reorg in database?
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Answer / vasuki🐍
reorganizes the table and its indexes by
rebuilding the index data into unfragmented and contiguous area on the disk.
Normally after a large amount of INSERT, UPDATE, DELETE activities on data tables, we generally need a REORG.
After a table space reorganization the fragments are moved around and clustered,
however the database still utilizes the old statistic to query the data.
So it is recommended to run a RUNSTATS on the table.
This command updates the statistic information.
Besides it makes sure that the DB2 optimizer takes advantage of the refreshed statistic information.
Reorg>>runstats
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