Allows long running transactions as indicated by logsec.
由logsec表示允许长期运行的事务。
This is the default backup mode as indicated by logarchmeth1 to be OFF.
这是默认的备份模式,由logarchmeth1设置为OFF来表示。
However, it returns nothing, as indicated by the v, which stands for void.
但正如V所示(表示void),它不返回任何值。
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