题目内容

储集层的非均质性将（）影响到储层中油、气、水的分布规律和油田开发效果的好坏。

A. 间接
B. 直接
C. 严重
D. 可能

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You issue the following RMAN command to set a retention policy on a database： RMAN>CONFIGURE RETENTION POLICY TO REDUNDANCY 2； What will be the outcome of issuing this command？（）

After two days，a backup will be marked obsolete
B. After two days，a backup will be deleted from the media
C. If the RMAN repository has records of two or more recent backups of a file，then older backups will be deleted from the media.
D. If the RMAN repository has records of two or more recent backups of a file then older backups will be marked obsolete.

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