单项选择题
YouworkasadatabaseadministratorforSupportcenter.cn.UsersintheSupportcenter.cnPRODdatabasecomplainabouttheslowresponseoftransactions.Whileinvestigatingthereasonyoufindthatthetransactionsarewaitingfortheundosegmentstobeavailable,andundoretentionhasbeensettozero.Whatwouldyoudotoovercomethisproblem?()
A.Increasetheundoreturn
B.Createmoreundosegments
C.Createanotherundotablespace
D.Increasethesizeoftheundotablespace
A.cn.UsersintheSupportcenter.cnPRODdatabasecomplainabouttheslowresponseoftransactions.Whileinvestigatingthereasonyoufindthatthetransactionsarewaitingfortheundosegmentstobeavailable,andundoretentionhasbeensettozero.Whatwouldyoudotoovercomethisproblem?()
A.Increasetheundoreturn
B.Createmoreundosegments
C.Createanotherundotablespace
D.Increasethesizeoftheundotablespace