DBMS_STATS Gather Statistics of Schema, Tables, Indexes

exec DBMS_STATS.GATHER_SCHEMA_STATS(ownname,estimate_percent, block_sample , method_opt,degree,granularity,cascade,stattab, statid,options,statown ,no_invalidate, gather_temp,gather_fixed);

Code examples:
exec dbms_stats.gather_schema_stats('SCOTT',DBMS_STATS.AUTO_SAMPLE_SIZE);

exec dbms_stats.gather_schema_stats(ownname=>'SCOTT', estimate_percent=>DBMS_STATS.AUTO_SAMPLE_SIZE);

exec dbms_stats.gather_schema_stats(ownname => 'SCOTT', estimate_percent => 25);

exec dbms_stats.gather_table_stats('SCOTT', 'EMPLOYEES');

exec dbms_stats.gather_index_stats('SCOTT', 'EMPLOYEES_PK');

exec dbms_stats.delete_schema_stats('SCOTT');

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