Oracle sql to flat file

Now, Create a Stored Procedure:. Now run the procedure as following:. You can now check your directory you specified in Create Directory command for Exported File.

Another Example:. We will create a Stored Procedure which will accept Directory and File name as input. Now let's execute the stored procedure and check the file at the desired location:. Email This BlogThis! Fahad March 19, at AM. Vikas Pandey February 2, at AM. Rajinder Bhatia Posted November 18, 0 Comments. Rajinder Bhatia.

Tom Falconer Posted November 18, 0 Comments. Hi, external tables is for read. Lakshman Jagarlamudi Posted November 19, 0 Comments. Hi, Yes. Donald Biddle Posted November 19, 0 Comments. Tom Falconer Posted November 19, 0 Comments. Bertrand, You can write to external tables if you are using 10g or later. Regards, Tom. Register or Login. We need to move data from flat file to Oracle table frequently. For example sales department sends daily sale data in excel sheet to IT department, how this data feed into Oracle database to tables?

This is one of the most used utility in Oracle database. Bad data will log into bad file. Note that sqlloader has many many options in it, many professionals use it to automate the loading process. You can write sql on top of the External Tables.

Step 4 :- Run select query This will select data from External Table which is associated with a flat file. So we can use any files in the directory for utl operations.

A reader, September 06, - am UTC. I tried this function with table having BLOB data,but it gave inconsistent data type error.

September 07, - am UTC. DOn't know if this related to the subject of question. But it defintely answers some comments here. There is an effective and very fast tool FastReader www. But I still have some hope! Is this the final word on the matter? Any words of wisdom most appreciated! February 09, - am UTC. Like Tom says, you can do it in Java.

Bipin, March 30, - pm UTC. Tom, I have same question as Paul has. I read your book effective oracle by design,, but it seems i need to read it again in order to understnad ref cursors. But in any case, it's very difficult for me to digest this fact.

Isn't ref cursor is a cursor after all? As Paul mentioned in above posting, it is a very common requirement to write such code. Where does Java get this information from? It has to be part of 'opened RefCursor', no? Is there any other reading you can suggest? Thanks again for supporting oracle develoepr community. March 30, - pm UTC. If you know at compile time, we can use a ref cursor.

Enhancement request for Oracle? Thanks for your quick answer Tom. I think this is the last question I am going to ask on this subject. Thanks for your patience. Have a good day. I previously thought I won't followup on this but it seems that I have not made my question clear enough. It expects a cursor?

This ref cursor structure of course will be different for different SPs. In order for me to do this, I need to get access to ref cursor metadata as everything column names, types, of columns etc. So, that's not an option for me. Hope this explains the questions. Thanks again for your help. If you want the declaritive way, where the language and SQL are tightly bound, you'll use ref cursors. I think I will try Java SP.

Thanks for your time, Tom. Hi Tom, We are in Oracle9R2 and we would like to preserver our data atleast for 7 years as per the instructions from various authorities. For this reason we have decided to preserve data in text format. Because we are not sure that if we have taken backup in oracle7 it will work in oracle10g or higher versions at the time of requirement suppose at end of 7th year we require this data Such restoration will make our life difficult.

So we have decided to 1. Dump all data in text files using separator character got an answer in this question 2. Kindly guide me which one is best for this step shall we do by exp and imp with indexfile option?

Load this text data into the tables. Can you help me a. April 06, - pm UTC. Just upgrade as you upgrade? Hi Tom, Regarding your answer to my question in this thread, sorry I have not mentioned that, we are in banking industy and every day we are generating huge number of transactions every day". Due to various reasons our vendor is purging transactions from our production database on a monthly basis.

This database is outside our country so we are having little control over it, secondly I can not take decision on this. In this scenario we want to preserve our data in text format.

Can you help me regarding my questions? I also observed that downloading of data of records by using your utility into flat file took around 9 mins. Can you tell me is it normal? April 07, - am UTC. Ok, silly little desktop pc. I will recheck again and inform you.

April 07, - pm UTC. You could make the plsql go faster by array fetching. Cannot directly access remote package variable? A reader, April 21, - pm UTC. April 22, - am UTC. A reader, April 22, - pm UTC. April 22, - pm UTC. April 28, - am UTC. Hi Tom, I have to extract oracle table data to text file and for that I want to use this proc. Its a scheduled job which is running on Unix server.

What other modifications do i need to make it running on Unix. I think these are very basic questions, but I am new to this environment and have to meet very close deadline. June 01, - am UTC. Hi, oracle version is 9. June 01, - pm UTC. TIA ht. August 02, - am UTC. Does it apply on my database also? Regards, Dawar.

August 11, - am UTC. Tom, DB version is I would like to create CSV file from Oracle table. I did not find any test. Am I missing any thing? You created procedures, did you run them? I got it, thanks. Tom, Thanks for making this code available. But I dont understand this part of the code. Could you plz explain? FOR i IN What purpose do they solve? Thanks as always. I'll define up to the first columns ignoring the rest Output file was not really big just about MB. If sql loader would release session right after file is created and command would be completed, then timing for sqlloader would be very short.

Now I am doing spool off to generate big files about 2GB each. It creates file but starts writing only in some time 30 minutes for example. Looks like it just loads as much as it can to memory first. After file is completed session is not released, actual command is hanging and I can't rename file, antil I close console manually. Can you explain this behaviour?

I have 10g SE on Windows. A form contains 2 blocks. There are 2 radio buttons on a form, when I change this options Radio then the first block contents need to be cleard. I hope Iam clear with my question. Waiting for your reply. August 24, - am UTC. It has been over a decade since I last touched forms, they have a forum for forms over there. Tom, could you please, answer the questions above about spool off behavior? Thanks a lot Denis. August 24, - pm UTC. I'm not sure what you mean by the spool off behaviour, you said It creates file but starts writing only in some time 30 minutes for example Data is written to file very fast.

Command is not completed and session is hanging for some time after data was written to file last time. Then, after some time command is completed and session release.

What sqlplus is doing after it completed writing to file? Big file 2GB. File is created right away, but data started writing to file in 30 minutes. What is happening at this time?

Command is not completed and session is hanging after data was written to file last time. So it looks like it completed writing to file, but is doing something else? I was wating for a day to see if command would be completed by itself. So I had manually to close console window. Similar situation to case 1, the difference is that comman is not completed by itself, or it need more time then I waited.

In both cases file had all data I need - all necessery data was written to file. AlbumTrackID chr 9 a. Denis Thanks Denis. August 25, - am UTC. Perhaps you have a big table, but the table has very very few rows relative to its overall size. So, it takes a long time to full scan - reading all of the empty blocks.

Trace it and see. If we've version 9i release 2, can we change these extract to implment bulk fetch with limit clause? Is that possbile?

Please let me know. August 30, - pm UTC. I need to do bulk collect and array fetching. Please let me know your thoughts. August 31, - am UTC. You would array fetch column 1 into array slots Hi TOm, The code was very useful But i have only one doubt I have some five records from the table, the file is created for the first record, but the second record it throws the following exception ORA invalid file operation ORA at "SYS.

September 21, - pm UTC. September 28, - pm UTC. John K. Sorry I was not clear. Right now I must type in the entire procedure, not just the parameters; that works as expected.

But every time I try to paste in the multiple line query after being prompted by a script that I have written based around your procedure , the errors are due to the line breaks in the pasted string. September 29, - am UTC. The total size of the unloaded data is unlimited -- the maximum size of an individual row of data is what is limited. I ran the utility, directing output to snoconso.

The data in the dumptable was selected from a table originally loaded using sqlldr. RRF' "str X'7c0d0a'" badfile 'orig. October 11, - pm UTC. Reproducing the truncation John K. The spooled output is fine but the cols have been formatted to suit these particular 19 rows. My login. October 13, - am UTC. I've not had this happen to me. October 31, - am UTC. I tested the query in sqlplus and worked fine thanks,. November 04, - am UTC.

December 22, - am UTC. You have the logic virtually outlined for you right above, just have to change it to "result sets". It does not create the file on my application server. Rather it creates the file on the directory used in create directory object on the database server. Thanks, PRS. December 30, - am UTC. How would you like it if files just started appearing on your machine magically??? Hi Tom, Its useful as ever. You always learn new things.

I was going though the above posts, i had a doubt if i can create a file in a directory through a "after insert trigger" and how? Thanks kirtish. January 07, - am UTC. Say you create that file in the after insert trigger And the transaction is rolled back.

Files do not rollback. Could you please provide an example. Also, is it possible to declare the sql in a cursor rather than putting it in a varchar2 variable. March 22, - pm UTC. You can then have a generic stored procedure which takes in any native cursor variable with a single VARCHAR2 field and which pumps the cursor contents out to a file.

What we need is a fast solution which can be invoked from the server, rather than relying on shell scripts and jobs. May 29, - am UTC. You would likely find an external procedure written in C to be "faster", yes. Hi Tom In the past you help me, now i need once more a little help from you. I have a file that's contained 4 lines of information, in each line there is several information that is separeted by " ".

My problem is this, my plsql reads perfectlly the first line but i cannot read the second, i don't know how. Can you tell me how i can read the other lines? If possible with an example. August 27, - pm UTC. What I did is. August 29, - am UTC. Thanks that solved the problem. August 30, - am UTC. In order to see how something works, I read the documentation. I got the answer for 2, can you please comment on 1.

ON or OFF turns this display on or off. Turning feedback ON sets n to 1. Setting feedback to zero is equivalent to turning it OFF. I have one problem in creating csv file. If one column has single line value, it is coming in single cell. But if the column has no. That one column value takes more than one cell in csv.