数据库空间优化

alter table OM_MOB_BEYOND_REGIS4 move nologging parallel 2;

alter index ind_OM_MOB_BEYOND_REGIS4  rebuild online nologging parallel 2;

alter table test logging parallel 1; 恢复表和索引的并行度、logging

alter table OM_MOB_BEYOND_REGIS4 enable row movement;
alter table OM_MOB_BEYOND_REGIS4 shrink space cascade;

alter table OM_MOB_BEYOND_REGIS4 disable row movement;

几条简单的语句，效果十分明显。很好用。