Re: UTL_FILE(HELP)

From: Mark C. Stock <mcstockX_at_Xenquery>
Date: Sun, 3 Apr 2005 12:53:15 -0400
Message-ID: <f7WdndpsVYjigs3fRVn-tg_at_comcast.com>


"Prasanna" <prasannansl_at_rediffmail-dot-com.no-spam.invalid> wrote in message news:fNOdndlsaKojMNLfRVn_vg_at_giganews.com...
> Hi All,
> Nice to be in this Forum.
> I have questions to ask on UTL_FILE :roll:
> Let me explain the concept.
> 1.When the net is down the user will take the records into one
> floppy(CLIENT)
> 2.When the net is up he will update the database(SERVER) with all the
> trasaction including the records which he taken into the floppy.
>
> He creates one text file in the floppy. The records in that text file
> will be as follows.
>
> ( '12-Dec-2004','D
> ','1','111111111111','11',11111,11111,'',0,'Z','N','M','
> ','N',11111,0,' ','12-Dec-2004',' ',0,' ',' ',' ',' ',0,'
> ','12-Dec-2004','
> ',0,'1','315','tpsl','06:45:26',1,'N','C','Y','D','1111','F','192.100.10.1','N','1111111111111','','','','','','19-Jan-2005','','','','')
> ( '12-Dec-2004','D
> ','2','222222222222','22',1254,1254,'',0,'Z','N','M',' ','N',1254,0,'
> ','12-Dec-2004',' ',0,' ',' ',' ',' ',0,'
> ','12-Dec-2004','
> ',0,'2','315','TPSL','07:07:11',1,'N','C','Y','D','2222','F','192.100.10.1','N','2222222222222','','','','','','19-Jan-2005','','','','')
>
> Questions
> *********
> 1. Is it possible to pass floppy drive A: as parameter to UTL_FILE?
> 2. If yes then do I need to create directory for this?
> 3. If no then can I copy the file in floppy to other location from
> procedure?
> 4. If yes then how can i do that?
> 5. When I get the line from UTL_FILE handler Iam straight away
> inserting the line. Like for example
> INSERT INTO CDYYMMDD1 VALUES(vNewLine);
> Is is possible?
> 6. How to go to the next line of UTL_FILE?
> 7.How to open that file in a procedure?
>
> It will be very useful if you send in any sample code of same issue.
> Iam here with pasting you the procedure which I have implemented.But
> it is not working due to the above mentioned Errors(Questions).
> _______________________________________________________
> CREATE OR REPLACE PROCEDURE BackupRestore (file_name IN VARCHAR2) IS
> vSFile utl_file.file_type;
> vNewLine VARCHAR2(200);
> vTNO VARCHAR2(6);
> vTDate DATE;
> vMach VARCHAR2(3);
>
> BEGIN
> vSFile := utl_file.fopen('A:', file_name,'r');
> LOOP
> BEGIN
> utl_file.get_line(vSFile, vNewLine);
> DBMS_OUTPUT.PUT_LINE(vNewLine);
> vTDate = substr(vNewLine,1,13)
> vTNo := SUBSTR(vNewLine,21,1);
> vMach := SUBSTR(vNewLine,77,3);
> FOR I IN (SELECT TRNNO, CONS_NO,MACHINE FROM CDYYMMDD1
> WHERE TRNDATE = vTDate AND
> (TRNNo = vTNo AND MACHINE = vMach)) LOOP
> IF I = 0 then
> INSERT INTO CDYYMMDD1 VALUES(vNewLine);
> END IF;
> END LOOP;
>
> EXCEPTION
> WHEN NO_DATA_FOUND THEN
> EXIT;
> END;
> END LOOP;
> COMMIT;
> utl_file.fclose(vSFile);
> EXCEPTION
> WHEN utl_file.invalid_mode THEN
> RAISE_APPLICATION_ERROR (-20051, 'Invalid Mode Parameter');
> WHEN utl_file.invalid_path THEN
> RAISE_APPLICATION_ERROR (-20052, 'Invalid File Location');
> WHEN utl_file.invalid_filehandle THEN
> RAISE_APPLICATION_ERROR (-20053, 'Invalid Filehandle');
> WHEN utl_file.invalid_operation THEN
> RAISE_APPLICATION_ERROR (-20054, 'Invalid Operation');
> WHEN utl_file.read_error THEN
> RAISE_APPLICATION_ERROR (-20055, 'Read Error');
> WHEN utl_file.internal_error THEN
> RAISE_APPLICATION_ERROR (-20057, 'Internal Error');
> WHEN utl_file.file_open THEN
> RAISE_APPLICATION_ERROR (-20059, 'File Already Opened');
> WHEN utl_file.invalid_maxlinesize THEN
> RAISE_APPLICATION_ERROR(-20060,'Line Size Exceeds 32K');
> WHEN utl_file.invalid_filename THEN
> RAISE_APPLICATION_ERROR (-20061, 'Invalid File Name');
> WHEN utl_file.access_denied THEN
> RAISE_APPLICATION_ERROR (-20062, 'File Access Denied By');
> WHEN others THEN
> RAISE_APPLICATION_ERROR (-20099, 'Unknown UTL_FILE Error');
> END read_demo;
> /
> _____________________________________________________
> Sorry for taking your valuable time.Thanks for spending your time.
> Waiting for your reply.
>

what is you client interface/tool?

what version of oracle?

as jim kennedy noted, utl_file is server side...

if you have a situation where client connectivity is a problem, is the issue only related to writes (inserts)? or do you also have to make provisions for reads?

in the simplest scenario, where you're just pushing data from the client and need to buffer it locally if the network connection is down, why not just save the SQL INSERT statements to a file (presumably on the hard disk, not on the floppy drive) and then reissue them when the connection is up?

++ mcs Received on Sun Apr 03 2005 - 18:53:15 CEST

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