为进行离线数据库备份，需要执行以下步骤。

To do an offline database backup, follow the steps below.

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我们离线数据库维护。

We're offline for database maintenance.

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当执行离线数据库备份时，需要单独备份编目分区。但是，在线备份时就不需要这样，因为日志是包括在备份镜像中的。

When performing an offline database backup, the catalog partition needs to be backed separately; however, this is not a concern with online backups, as the logs are included in the backup image.

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