Expert Oracle Exadata - Parent Directory

CHAPTER 2 OFFLOADING / SMART SCANSYS@SANDBOX> -- disable bloom filter offloadingSYS@SANDBOX> alter session set "_bloom_predicate_pushdown_to_storage"=false;Session altered.Elapsed: 00:00:00.82SYS@SANDBOX> @bloom_join2.sqlCOL2SUM(A.COL1)------------------------------ -----------2342 144asddsadasd 1535984162 rows selected.Elapsed: 00:11:39.39SYS@SANDBOX> -- enable bloom filter offloadingSYS@SANDBOX> alter session set "_bloom_predicate_pushdown_to_storage"=true;Session altered.Elapsed: 00:00:00.82SYS@SANDBOX> @bloom_join2.sqlCOL2SUM(A.COL1)------------------------------ -----------asddsadasd 1535984162342 1442 rows selected.Elapsed: 00:02:06.13SYS@SANDBOX> @dplanEnter value for sql_id: 09m6t5qpgkywxEnter value for child_no: 0PLAN_TABLE_OUTPUT-----------------------------------------------------------------------------------------SQL_ID 09m6t5qpgkywx, child number 0-------------------------------------select /*+ bloom join 2 use_hash (skew temp_skew) */ a.col2,sum(a.col1) from kso.skew3 a, kso.skew2 b where a.pk_col = b.pk_col andb.col1 = 1 group by a.col2Plan hash value: 46694713735