When this command is issued, all data files that are in the online backup mode will be issued checkpoint SCN.

当发出这个命令时，处于联机备份模式的所有数据文件都将被发放检查点 SCN。

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When Alter Tablespace ts_name End backup is issued, again a checkpoint SCN is recorded at the headers of online backup data files.

当发出“Alter Tablespace ts_name End Backup”时，在联机备份数据文件的的文件头中再次记录了检查点scn。

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For those data files not in the online backup mode, subsequent checkpoint will increase the SCN in their headers.

对于没有处在联机备份模式的那些数据文件，随后的检查点将在它们的文件头中添加scn。

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