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How to determine to collect histograms or not (Even oracle determines by same)

From Oracle 10g, the Oracle SMON (System Monitor) process regularly gathers information on columns that are used in query predicates and updates them automatically into a table named COL_USAGE$ in the SYS schema. Unlike the MON_MOD$ table, also in the SYS schema, which records table-level DML activity such as the number of rows changed by […]