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(DBMS_STATS.DELETE_TABLE_STATS & DBMS_STATS.GATHER_TABLE_STATS)

vish3210
vish3210 asked
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Last Modified: 2011-10-03
Hi Experts,

Please clarify my doubts below....

1)Is it mandatory to have DBMS_STATS.DELETE_TABLE_STATS before DBMS_STATS.GATHER_TABLE_STATS????

      DBMS_STATS.DELETE_TABLE_STATS(ownname=>'NSCDPREP',tabname=>'DP_FWEQ_STAT_FCST_GT');
      DBMS_STATS.GATHER_TABLE_STATS(ownname=>'NSCDPREP',tabname=>'DP_FWEQ_STAT_FCST_GT',estimate_percent=>30);

2) When I've "INSERT" statement in a table I need to use the above commands(DBMS_STATS.DELETE_TABLE_STATS & DBMS_STATS.GATHER_TABLE_STATS). Agreed.

Do I need use the commands(DBMS_STATS.DELETE_TABLE_STATS & DBMS_STATS.GATHER_TABLE_STATS) when I've "UPDATE" on the table.

Thank you,
--Vimal
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