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Question and Answer

Connor McDonald

Thanks for the question, Sam.

Asked: May 31, 2017 - 5:40 pm UTC

Last updated: June 09, 2017 - 2:21 am UTC

Version: Application Express 4.1.1.00.23

Viewed 1000+ times

You Asked

Hello Tom,

Firstly, I tried to google it a lot to check on if there is a limit to number of rows that can be exported to csv file from APEX Interactive Report but couldn't find one.

So here is my issue. I have an interactive report with around 35 columns and 500k rows. When I tried to download to a csv file, it only gave me around 150k rows. I then did hit and trial to see if it is an issue with number or rows. I tried with 4/5 columns and it downloaded all the rows. As I keep on increasing the number of columns in the report and download the file, the number of rows in the started decreasing.

So my question - is there a size limit to csv file in interactive report. I would really appreciate if you can point to any Oracle documentation on this limitation, if it exists?

Thanks,
Sam

and Connor said...

Hi, I spoke to the Apex PM and there is no internal limit on the size of a download.

If you can setup a demo on apex.oracle.com, and paste the URL to it in here as a review, we'll take a look.

Easy way to generate 500k rows is to have your report run of a query like:

select
rownum c1,
rownum c2,
rownum c3,
rownum c4,
..
from dual connect by level <= 500000;

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Comments

Thanks

Samip Musyaju, June 05, 2017 - 12:53 am UTC

I am trying to replicate the issue in apex.oracle.com but got stuck on the memory issue.

ORA-30009: Not enough memory for CONNECT BY operation

and just an FYI, my apex version is 4.1.X.X. I will try to see if it is an issue on excel side.

But thanks for the response.
Connor McDonald
June 06, 2017 - 1:50 am UTC

Ah...my bad. Do this as a workaround

select
rownum c1,
rownum c2,
rownum c3,
rownum c4,
..
from
( select 1 from dual connect by level <= 5000 ),
( select 1 from dual connect by level <= 1000 );


Thanks

Sam, June 08, 2017 - 2:06 pm UTC

I changed the query and the report is now displaying up. I have 20 columns with 500k rows. URL below

https://apex.oracle.com/pls/apex/f?p=44037:3

The download to csv works for 4 or 5 columns but it errors out when I tried with 20 columns.

Error: 500 Internal Server Error.

I suppose it has to do something with timing out.

Anyway I had one of my friend create the report in apex version 4.2.X.X and it worked fine. I could download all 500k rows.

Is it something with the apex version 4.1.1.00.23 that this limitation is applied.
Connor McDonald
June 09, 2017 - 2:21 am UTC

OK, I'll pass it on to the PM and see what he comes back with
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