What is the right synatx for db_hotbackup?

db_hotbackup has -h -d -l options. if i have all db and log file under one directory, which is env home. shall i do
(1) db_hotbackup -h <dir> instead of
(2) db_hotbackup -h <dir> -d <dir> -l <dir>
because -v show that db_hotbackup actually copy file multiple times with (2).
so which one is really correct? or none is ok?
thanks!

[email protected] wrote:
the related documentation actually has a typo on explaining -h usage.Yeap, you are right about that one, will change.
[email protected] wrote:
more questions, can we run this command while db is under use with new create/update/delete going on? what is the requirement?Don't worry about that. The advantage of a hot backup is that applications may continue to read and write the databases while the snapshot is being taken. The disadvantage of a hot backup (instead of standard backup) is that more information must be archived, and recovery based on a hot backup is to an unspecified time between the start of the backup and when the backup is completed.
[email protected] wrote:
also i noticed that this command will copy all the log files and then removed unnecessary ones. can it skip coping all logs? i need to copy it to a networked file system and speed is my concern.You have two options if speed is your concern. One would be to use the "-c" option, as I said in the previous post. You can archive the log files by using " [db_archive|http://www.oracle.com/technology/documentation/berkeley-db/db/utility/db_archive.html] ". For more details on that, please visit [Log file removal|http://www.oracle.com/technology/documentation/berkeley-db/db/ref/transapp/logfile.html] and [Database and log file archival|http://www.oracle.com/technology/documentation/berkeley-db/db/ref/transapp/archival.html] documentation pages.
The other thing you can do is to run db_hotbackup with "-u" option, as this will just copy the new log files.
Both of them should work and decrease the time needed for db_hotbackup to complete.
Bogdan

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