Bottleneck of performance when importing datapump

Hi, we have created a new database 12cR1 on LMOS with Linux x 86 64-bit. We are experiencing great slowness in 10-11GB data import and taking more than 3 hours. Looking at the AWR it shows high I/O waits.

AWR attached but unable to conclude the problem. Please can I ask someone to stem the problem?

Thank you very much!

I haven't looked too closely, but I will note this:

Your sql albums and waiting is all related to import - which is not a bad thing.

You start on the cpu - that is not a bad thing, even if CPU resources are needed by the operating system to run scripts, so there could be something on the side of the BONE there to observe.

You have a lot of 'other' waiting for I/O - I'll take that as meaning the OS did a lot of things.  It makes sense for a big load.

Others may have more insight of the AWR in what Oracle can be done, but I don't think that we are not seeing clear is the resources required by the operating system to archive the redo.  Therefore, if no one else using the db when you perform this type of load, you might consider: backup, off the record of archive, load, turn the back of archiving, archive again.  You can use OS tools to check the performance in your current setup and configuration noarchivelog, and total elapsed time.  Given that the percentage of your database that processes these data compared to the full size will determine how long does take a full backup, this could be the determining factor to see if you do not want to do that.

Tags: Database

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    ===========================================
    Perhaps the following links will propose a few ideas:

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    You might find the free Picasa software or Windows Live Photo Gallery
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    Volunteer - MS - MVP - Digital Media Experience J - Notice_This is not tech support_I'm volunteer - Solutions that work for me may not work for you - * proceed at your own risk *.

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