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import of LONG columns

This is a discussion on import of LONG columns within the Oracle Database forums, part of the Database Server Software category; --> I've been working for a while now to improve the import time of one of our schemas. One table ...


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  #1 (permalink)  
Old 02-22-2008, 05:48 PM
Harry Boswell
 
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Default import of LONG columns

I've been working for a while now to improve the import time of one of our
schemas. One table takes up most of the import time, and it has a LONG
column in it. Most of the objects are fairly small, but about 40 are much
bigger - the largest is about 34.8 MB, and there are a few others that are
larger than 15 MB. Would increasing the BUFFER parameter size to a very
large value help this? (I'm thinking on the order of 35000000). Currently
this import is taking about 6 hours, and the one table makes up about 5 1/2
hours of that.

Thanks,
Harry Boswell
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  #2 (permalink)  
Old 02-22-2008, 05:49 PM
Brian Peasland
 
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Default Re: import of LONG columns

I've had a similar problem with one of my regular imports. I set BUFFER
to a larger value. I also increased the size of my buffer cache. That
seemed to help me.

HTH,
Brian

Harry Boswell wrote:
>
> I've been working for a while now to improve the import time of one of our
> schemas. One table takes up most of the import time, and it has a LONG
> column in it. Most of the objects are fairly small, but about 40 are much
> bigger - the largest is about 34.8 MB, and there are a few others that are
> larger than 15 MB. Would increasing the BUFFER parameter size to a very
> large value help this? (I'm thinking on the order of 35000000). Currently
> this import is taking about 6 hours, and the one table makes up about 5 1/2
> hours of that.
>
> Thanks,
> Harry Boswell


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