339.Why would you run the delete obsolete command? (Choose all that apply.)
A. To remove missing backup set pieces physically from disk
B. To remove metadata related to backup set pieces in the control file and the recovery catalog
C. To mark as deleted records in the control file and the recovery catalog associated with obsolete backup sets
D. To delete backup set pieces associated with backups that are no longer needed due to retention criteria
E. To remove old versions of RMAN backups
Answer: CD
为什么要运行 delete obsolete 命令？
A、从磁盘中删除丢失的备份集碎片，错误。既已丢失，如何删除。
B、在控制文件和恢复目录中删除与备份集碎片有关的元数据，错误。
C、在控制文件和恢复目录中将与过时的备份集相关联的记录标记为已删除，正确。
D、删除由于保留策略而不再需要的备份集，正确。
E、去除RMAN备份旧版本，错误。
A. To remove missing backup set pieces physically from disk
B. To remove metadata related to backup set pieces in the control file and the recovery catalog
C. To mark as deleted records in the control file and the recovery catalog associated with obsolete backup sets
D. To delete backup set pieces associated with backups that are no longer needed due to retention criteria
E. To remove old versions of RMAN backups
Answer: CD
为什么要运行 delete obsolete 命令？
A、从磁盘中删除丢失的备份集碎片，错误。既已丢失，如何删除。
B、在控制文件和恢复目录中删除与备份集碎片有关的元数据，错误。
C、在控制文件和恢复目录中将与过时的备份集相关联的记录标记为已删除，正确。
D、删除由于保留策略而不再需要的备份集，正确。
E、去除RMAN备份旧版本，错误。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2121780/ ，如需转载，请注明出处，否则将追究法律责任。
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