Hi,

Since no one jumped in, can anyone point me another list, more apropriate, where I could ask these questions on Nbackup?


Thanks!


--- Em ter, 1/2/11, Anderson Farias <peixedragao@...> escreveu:

Hi,


I did a level 0 (full) backup of a 8GB with nbackup. It created a 8Gb file and took about 8 minutes. Good!

Right after that, for testing porpouses, I did a level 1 backup on the same database, an nbackup created a 100 Kb file and took about 5 minutes!!

My question is:

1) why the level 1 backup takes so much time (almost as much as level 0)? (I thought it was meant to work very fast)

2) why does level 1 creates this 100 Kb backup file if nothing has changed in the database between level 0 and level 1 backup?

(BTW, it's samething if a create a level 2 backup right after the level 1 backup -- again, nothing changed in the database between backps -- stil, it created a 40 Kb backup file and took another 5 mintutes to do so)


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Another one:

nbackup -? lists a '-D [ON | OFF]' option, which says

"Use or not direct I/O when scanning database"

What does this option actually do? I could not find any documentation about it.