OCP认证052考试题库：1Z0-V8.02-第1题

OCP认证052考试题库：1Z0-V8.02-第1题，完整题库请点击这里联系老师咨询了解

1. View the Exhibit and examine the attributes of an undo tablespace.

In an OLTP system, the user SCOTT has started a query on a large table in the peak transactional hour

that performs bulk inserts. The query runs for more 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

Answer: A

答案解析：

“快照太旧”错误是因为没有足够的还原数据来实现读取一致性。所以选A。