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Oracle认证考试

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View the Exhibit and examine the attributes of an undo tablespace. In an OLTP system, the user SCOTT hasstarted a query on a large table in the peak transactional hour that performs bulk inserts. The query runs formore than 15 minutes and then SCOTT receives the following error:ORA-01555: snapshot too old What could be the reason for this error()

  • A、The query is unable to get a read-consistent image.
  • B、There is not enough space in Flash Recovery Area.
  • C、There is not enough free space in the flashback archive.
  • D、The query is unable to place data blocks in undo tablespace
正确答案:A
答案解析:
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