Tag Archives: INDEX RANGE SCAN

12c新增并行索引扫描

Oracle在12c之前对于索引范围扫描是没有办法并行执行的,从12.1开始,Oracle可以并行的执行索引扫描。 首先创建测试环境: SQL> create table t_para_ind (id number, name varchar2(30), created date);   Table created.   SQL> insert into t_para_ind select id, object_name, created from t_big;   6735106 rows created.   SQL> commit;   Commit complete.   SQL> create index … Continue reading

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