I need the format to be a flat text file not an Oracle dmp file.
Thanks
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Question
Exporting an extremely large table to a flat file?
Hi
Platform : Oracle 9.2 / Windows 2000
I'd like to export a table with 40 million rows to a flat file. If I SPOOL data into a regular text file it grinds to a crawl after around 4 million records. I have tried TOAD but it hangs!
Does anybody know of a utility that might do what I am looking for?
Thanks
AC
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Answers
AC
For more detailed information on export look at:
http://download-west.oracl
Registration is free.
Regards
Chedgey
AC,
If you need a flat file output then the easiest way is to write something to do it for in either PL/SQL or Pro*C.
To do it in PL/SQL is quite simple using the supplied UTL_FILE package. As a simplistic example:
Declare
vFileHandle UTIL_FILE.FILE_TYPE;
vOutputDirectory VarChar2(50) := 'C:\TEMP\';
vOutputFileName VarChar2(50) := 'TestPutput.txt';
Cursor cTable Is Select TABLE_NAME From USER_TABLES;
Begin
vFileHandle := UTIL_FILE.FOPEN( vOutputDirectory, vOutputFileName, 'w' );
For rTable In cTable
Loop
UTIL_FILE.PUTF( vFileHandle, '%s\n', rTable.TABLE_NAME );
UTIL_FILE.FFLUSH( vFileHandle );
End Loop;
UTIL_FILE.FCLOSE( vFileHandle );
End;
The documentation is at:
http://download-west.oracl
I hope that helps.
Regards
Chedgey
You may want trying FastReader from Wisdomforce www.wisdomforce.com . FastReader is exporting the data from very large Oracle tables into flat text files very fast . FastReader's huge advantage it doesn't add overhed on your system. Don't know what hardware you have, but in my case FastReader unloaded 55 million rows from huge Oracle table in like 5 minutes. FastReader also generates loader scripts to various databases such as Oracle (sqlldr), MSSQL Server (bcp), DB2 , MySQL, etc... Which is nice since it is easy to automate the process
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by: chedgeyPosted on 2004-07-28 at 03:39:29ID: 11654673
AC,
What is wrong with Oracle's export utility?
Try, from a command window:
exp <username>/<password>@<dat
Then enter the requested details such as filename, object owner and objects.
Regards
Chedgey