题目内容
（请给出正确答案）
提问人：网友w*****2
发布时间：2022年4月6日 07:51
[单项选择题]
>ALTERTABLESPACEundotbs1RETENTIONGUARANTEEWhateffectwouldthisstatementhaveonthedatabase？（）A.Theextentsinundotablespaceretaindatauntilthenextfulldatabasebackup.B.Theextentscontainingcommitteddataintheundotablespaceareneveroverwritten.C.Theextentswhichnolongercontainuncommitteddataintheundotablespacearenotoverwrittenforatleast15minutes.D.Theextentscontainingcommitteddataintheundotablespacearenotoverwrittenuntiltheinstanceisshutdown.
A.Youexecutedthefollowingcommandtoenableretentionguarantee：SQL>ALTERTABLESPACEundotbs1RETENTIONGUARANTEEWhateffectwouldthisstatementhaveonthedatabase？（）
A.Theextentsinundotablespaceretaindatauntilthenextfulldatabasebackup.
B.Theextentscontainingcommitteddataintheundotablespaceareneveroverwritten.
C.Theextentswhichnolongercontainuncommitteddataintheundotablespacearenotoverwrittenforatleast15minutes.
D.Theextentscontainingcommitteddataintheundotablespacearenotoverwrittenuntiltheinstanceisshutdown.
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