ViewtheExhibitandexaminetheattributesofanundotablespace.InanOLTPsystem,theuserSCOTThasstartedaqueryonalargetableinthepeaktransactionalhourthatperformsbulkinserts.Thequeryrunsformorethan15minutesandthenSCOTTreceivesthefollowingerror:ORA-01555:snapshottoool
题目
ViewtheExhibitandexaminetheattributesofanundotablespace.InanOLTPsystem,theuserSCOTThasstartedaqueryonalargetableinthepeaktransactionalhourthatperformsbulkinserts.Thequeryrunsformorethan15minutesandthenSCOTTreceivesthefollowingerror:ORA-01555:snapshottoooldWhatcouldbethereasonforthiserror（）
A.Thequeryisunabletogetaread-consistentimage.
B.ThereisnotenoughspaceinFlashRecoveryArea.
C.Thereisnotenoughfreespaceintheflashbackarchive.
D.Thequeryisunabletoplacedatablocksinundotablespace
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参考答案和解析
参考答案：A