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Monthly Archives: December 2018
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