A.死鎖出現(xiàn)了,必須殺掉某個(gè)會(huì)話才能解開(kāi) B.死鎖能夠被ORACLE偵測(cè)到,并且自動(dòng)解開(kāi) C.應(yīng)用軟件設(shè)計(jì)應(yīng)充分考慮避免死鎖 D.出現(xiàn)死鎖后會(huì)報(bào)ORA-60
A.MAX B.SUM C.COUNT D.AVG
A.UNION B.MINUS C.UNIONALL D.INTERSECT