A.USER_OBJECTS B.USER_TEXT C.USER_SOURCE D.USER_DESC
A.select seq.ROWNUM from dual; B.select seq.ROWID from dual; C.select seq.CURRVAL from dual; D.select seq.NEXTVAL from dual;
A.多余的空間會單獨閑置出來重新創(chuàng)建 B.GHOST程序會按比例重新增加調(diào)整每個分區(qū)容量 C.GHOST會報錯無法復(fù)制 D.以上都不正確