Read a file and insert rows into table
Hi,
i would like to know how read a file (expl.txt) with the utl_file package and after insert each row into the table (dataID).
ie :
file /tmp/expl.txt is containing :
id1 id2 describe
2 3 test1
6 5 test2
4 7 test3
and
table dataID (
id1 number,
id2 number,
describe varchar2(100));
Thanks you very much.
Hello,
You can use the TEXT_IO package.
Perform an over-all search (right upper corner) on TEXT_IO, and in the results you will find a manual on how to use the package.
Hope this will help you.
Regards,
Cindy
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Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
MS SQL Consulting:
Large scale of database and data cleansing
Remote DBA Services:
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SQL Server Integration Services:
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Not a total deal breaker, but would be nice to know what is happening under the hood here so I don't act on any false assumptions.
Thanks for any input.
To replicate:
Create a table with CLOB field:
CREATE TABLE DEVUSER.TESTTABLE
ID NUMBER
, FULLNAME VARCHAR2(50)
, AGE NUMBER
, DESCRIPTION CLOB
);Capture the before SCN:
SELECT DBMS_FLASHBACK.GET_SYSTEM_CHANGE_NUMBER FROM DUAL;Insert a new row in the test table:
INSERT INTO TESTTABLE(ID,FULLNAME,AGE) VALUES(1,'Robert BUILDER',35);
COMMIT;Capture the after SCN:
SELECT DBMS_FLASHBACK.GET_SYSTEM_CHANGE_NUMBER FROM DUAL;Start logminer session with the bracketing scn values and options etc:
EXECUTE DBMS_LOGMNR.START_LOGMNR(STARTSCN=>2619174, ENDSCN=>2619191, -
OPTIONS => DBMS_LOGMNR.DICT_FROM_ONLINE_CATALOG + DBMS_LOGMNR.CONTINUOUS_MINE + -
DBMS_LOGMNR.COMMITTED_DATA_ONLY + DBMS_LOGMNR.NO_ROWID_IN_STMT + DBMS_LOGMNR.NO_SQL_DELIMITER)Query the logs for the changes in that range:
SELECT
commit_scn, xid,operation,table_name,row_id
,sql_redo,sql_undo, rs_id,ssn
FROM V$LOGMNR_CONTENTS
ORDER BY xid asc,sequence# ascResults:
2619178 0C00070028000000 START AAAAAAAAAAAAAAAAAA set transaction read write
2619178 0C00070028000000 INSERT TESTTABLE AAAAAAAAAAAAAAAAAA insert into "DEVUSER"."TESTTABLE" ...
2619178 0C00070028000000 UPDATE TESTTABLE AAAFEXAABAAALEJAAB update "DEVUSER"."TESTTABLE" set "DESCRIPTION" = NULL ...
2619178 0C00070028000000 COMMIT AAAAAAAAAAAAAAAAAA commitEdited by: 958701 on Sep 12, 2012 9:05 AM
Edited by: 958701 on Sep 12, 2012 9:07 AMScott,
Thanks for the reply.
I am inserting into the table over a database link.
I am using the new version of HTML Db (2.0)
HTML Db is connected to an Oracle 10 database I think, however the table I am trying to insert data into (via the database link) is in an Oracle 8 database - this is why we created a link to it as we couldn't have the HTML Db interacting with the Oracle 8 database directly due to compatibility problems (or so I've been told)
Simon -
Read multiple files and save all into one output file(AGAIN)
Hi, guys
I need your help for reading data from multiple files and save the results into one output file. When files are selected from file chooser, my program read the data line by line , do some calculations and save the result into the output. I made an array to store input files and it seems to be working fine, but when it comes to SaveFile() function, issues NullPointException message.
public class FileReduction1 extends JFrame implements ActionListener
// GUI definition and layout
/* ACTION PERFORMED */
public void actionPerformed(ActionEvent event) {
if (event.getActionCommand().equals("Open File")) getFileName();
/* OPEN THE FILE */
private void getFileName() {
// Display file dialog so user can select file to open
JFileChooser fileChooser = new JFileChooser();
fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
fileChooser.setMultiSelectionEnabled(true);
int result = fileChooser.showOpenDialog(this);
// If cancel button selected return
if (result == JFileChooser.CANCEL_OPTION) return;
if (result == JFileChooser.APPROVE_OPTION)
files = fileChooser.getSelectedFiles();
textArea.setText("");
if(files.length>0)
filelist="";
System.out.println("files length"+files.length);
for(int i=0;i<files.length;i++)
System.out.println(files.getName());
filelist+=files[i].getName()+" ,";
if (checkFileName(files[i]) )
openButton.setEnabled(true);
readButton.setEnabled(true);
textArea.append("file "+files[i].getName()+"is a proper file"+"\n");
readFile(files[i]);
textfield.setText(filelist);
else{JOptionPane.showMessageDialog(this,"Please select file(s)",
"Error 5: ",JOptionPane.ERROR_MESSAGE); }
// Obtain selected file
/* READ FILE */
private void readFile(File fileName_in) {
// Disable read button
readButton.setEnabled(false);
// Dimension data structure
getNumberOfLines(fileName_in);
data = new String[numLines][4];
// Read file
readTheFile(fileName_in);
// Rnable open button
openButton.setEnabled(true);
/* GET NUMBER OF LINES */
/* Get number of lines in file and prepare data structure. */
private void getNumberOfLines(File fileName_in) {
int counter = 0;
// Open the file
openFile(fileName_in);
// Loop through file incrementing counter
try {
String line = fileInput.readLine();
while (line != null) {
counter++;
System.out.println("(" + counter + ") " + line);
line = fileInput.readLine();
numLines = counter;
closeFile(fileName_in);
catch(IOException ioException) {
JOptionPane.showMessageDialog(this,"Error reading File",
"Error 5: ",JOptionPane.ERROR_MESSAGE);
closeFile(fileName_in);
System.exit(1);
/* READ FILE */
private void readTheFile(File fileName_in)
// Open the file
//int row=0;
int col=0;
openFile(fileName_in);
System.out.println("Read the file");
// Loop through file incrementing counter
try
String line = fileInput.readLine();
while (line != null)
boolean containsDoubles = false;
double temp;
String[] lineParts = line.split("\t");
try
for (col=0;col<lineParts.length;col++)
temp=Double.parseDouble(lineParts[col]);
data[row][col] = lineParts[col];
containsDoubles = true;
System.out.print("data["+row+"]["+col+"]="+lineParts[col]+" ");
} catch (Exception e) {row=0; col=0; temp=0.0;}
if (containsDoubles){ row++;}
System.out.println();
line = fileInput.readLine();
catch(IOException ioException)
JOptionPane.showMessageDialog(this,"Error reading File", "Error 5: ",JOptionPane.ERROR_MESSAGE);
closeFile(fileName_in);
System.exit(1);
//System.out.println("length"+data.length);
closeFile(fileName_in);
process(fileName_in);
/* CHECK FILE NAME */
/* Return flase if selected file is a directory, access is denied or is
not a file name. */
private boolean checkFileName(File fileName_in) {
if (fileName_in.exists()) {
if (fileName_in.canRead()) {
if (fileName_in.isFile()) return(true);
else JOptionPane.showMessageDialog(null,
"ERROR 3: File is a directory");
else JOptionPane.showMessageDialog(null,
"ERROR 2: Access denied");
else JOptionPane.showMessageDialog(null,
"ERROR 1: No such file!");
// Return
return(false);
/* OPEN FILE */
private void openFile(File fileName_in) {
try {
// Open file
FileReader file = new FileReader(fileName_in);
fileInput = new BufferedReader(file);
catch(IOException ioException) {
JOptionPane.showMessageDialog(this,"Error Opening File",
"Error 4: ",JOptionPane.ERROR_MESSAGE);
textArea.append("OPEN FILE\n---------\n");
textArea.append(fileName_in.getPath());
textArea.append("\n");
//System.out.println("File opened successfully");
/* CLOSE FILE */
private void closeFile(File fileName_in) {
if (fileInput != null) {
try {
fileInput.close();
catch (IOException ioException) {
JOptionPane.showMessageDialog(this,"Error Opening File",
"Error 4: ",JOptionPane.ERROR_MESSAGE);
System.out.println("File closed");
private void process(File fileName_in) {
//getNumberOfLines();
//data = new String[numLines][3];
// Read file
double temp,temp1;
//readTheFile();
//System.out.println("row:"+row);
//int number=data.length;
//System.out.println(number);
for (int i=0; i<row; i++)
temp=Double.parseDouble(data[i][1]);
sumx+=temp;
temp1=Double.parseDouble(data[i][3]);
sumy+=temp1;
multixy+=(temp*temp1);
square_x_sum+=(temp*temp);
square_y_sum+=(temp1*temp1);
//System.out.println("Sum(x)="+sumx);
double tempup=(row*multixy)-(sumx*sumy);
double tempdown=(row*square_x_sum)-(sumx*sumx);
slope=tempup/tempdown;
double tempbup=sumy-(slope*sumx);
intb=tempbup/row;
double tempside=(row*square_y_sum)-(sumy*sumy);
double cordown=Math.sqrt(tempdown*tempside);
corr=tempup/cordown;
r_sqrt=corr*corr;
textArea.append("Data for file"+ fileName_in.getName()+" have been processed successfully.");
textArea.append("\n");
textArea.append("Please enter output file name including extension.");
System.out.println("number"+row);
System.out.println("slope(m)="+slope);
System.out.println("intecept b="+intb);
System.out.println("correlation="+corr);
System.out.println("correlation="+r_sqrt);
saveFile();
private void saveFile()
textArea.append("SAVE FILE\n---------\n");
if (openFile1())
try {
outputToFile();
catch (IOException ioException) {
JOptionPane.showMessageDialog(this,"Error Writing to File",
"Error",JOptionPane.ERROR_MESSAGE);
private boolean openFile1 ()
// search for the file path
StringBuffer stringpath;
title=textfield1.getText().trim();
int temp=fileName_in.getName().length();
int temp_path=fileName_in.getPath().length();
int startd=(temp_path-temp);
stringpath=new StringBuffer(fileName_in.getPath());
stringpath.delete(startd, temp_path+1);
//System.out.println("file-path="+temp_path);
//System.out.println("length-file="+temp);
path=stringpath.toString();
fileName_out = new File(path, title);
//System.out.println(file_out.getName());
if (fileName_out==null || fileName_out.getName().equals(""))
JOptionPane.showMessageDialog(this,"Invalid File name",
"Invalid File name",JOptionPane.ERROR_MESSAGE);
return(false);
else
try
boolean created = fileName_out.createNewFile();
if(created)
fileOutput = new PrintWriter(new FileWriter(fileName_out));
fileOutput.println("File Name"+"\t"+"Slope(m)"+"\t"+"y-intercept(b)"+"\t"+"Coefficient(r)"+"\t"+"Correlation(R-Squared)");
return(true);
else
fileOutput = new PrintWriter(new FileWriter(fileName_out,true));
return(true);
catch (IOException exc)
JOptionPane.showMessageDialog(this,"Please enter the file name","Error",JOptionPane.ERROR_MESSAGE);
return(false);
private void outputToFile() throws IOException
// Initial output
textArea.append("File name = " + fileName_out + "\n");
// Test if data exists
if (data != null)
fileOutput.println(fileName_in.getName() +"\t"+ slope+"\t"+intb+"\t"+corr+"\t"+r_sqrt);
textArea.append("File output complete\n\n");
else
textArea.append("No data\n\n");
// End by closing file
initialcomp();
fileOutput.close();
private void initialcomp()
slope=0.0;
intb=0.0;
corr=0.0;
r_sqrt=0.0;
sumx=0.0; sumy=0.0; multixy=0.0; square_x_sum=0.0; square_y_sum=0.0;
for(int i=0;i<data.length;i++)
for(int j=0;j<data[i].length;j++)
data[i][j]=null;
/* MAIN METHOD */
public static void main(String[] args) throws IOException
// Create instance of class FileChooser
FileReduction1 newFile = new FileReduction1("File Reduction Program");
// Make window vissible
newFile.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
newFile.setSize(500,400);
newFile.setVisible(true);
Sorry about the long lines.
As you can see, all input files saved in array called files, however when OpenFile1() function is called, it take input (fileName_in) as a single file not an array. I'm assuming this causes the exception.
When there's muptiple inputs, program should take each file from getFileName() to outputToFile() sequentially.
Does anybody have an idea to solve this?
Thanks a lot!!you naming convention is confussing. you should follows Java naming convention..you have a getXXX but decalred the return type as "void"...get usully means to return something...
your code is doing too much..and hard to follows..
1. get the selected files
for each selected file
process the file and return the result
write out the result.
/** close the precious resource */
public void closeResource(Reader in){
if (in != null){
try{ in.close(); }
catch (Exception e){}
/** get the total number of line in a file */
public int getLineCount(File file) throws IOException{
BufferedReader in = null;
int lineCount = 0;
try{
in = new BufferedReader(new FileReader(file));
while ((in.readLine() != null)
lineCount++;
return lineCount;
finally{ closeResource (in); }
/** read the file */
public void processFile(File inFile, File outFile) throws IOException{
BufferedReader in = null;
StringBuffer result = new StringBuffer();
try{
in = new BufferedReader(new FileReader(inFile));
String line = null;
while ((in.readLine() != null){
.. do something with the line
result.append(....);
writeToFile(outFile, result.toString());
finally{ closeResource (in); }
public void writeToFile(File outFile, String result) throws IOException{
PrintWriter out = null;
try{
out = new PrintWriter(new FileWriter(outFile, true)); // true for appending to the end of the file
out.println(result);
finally{ if (out != null){ try{ out.close(); } catch (Exception e){} } }
} -
Dequeue XML from Oracle AQ and insert data into table
Using PL/SQL in a stored procedure, I need to dequeue a message from an Oracle AQ queue, parse the XML content and insert the data in an Oracle table. This is being done in Oracle 9.2.x.
The payload for the message consists of 2 attributes, APPLICATION_DATA (VARCHAR2(32) and MESSAGE_BODY (CLOB). The MESSAGE_BODY is an XML document. A sample of the message is shown below:
(M_NAME=MSG_LAW_WR_CRE_UPD, <?xml version = "1.0"?>
<MSG_LAW_WR_CRE_UPD ID = "WMIS-4744" SRC_SYSTEM_CODE = "WMIS" SRC_SYSTEM_INSTANCE = "WMIS">
<WR:CMP_LAW_WR_CRE_UPD xmlns:WR = "WR" >
<WR:DATETIME>12/19/2005</WR:DATETIME>
<WR:RUSCODE>100</WR:RUSCODE>
<WR:WRNO>38213</WR:WRNO>
</WR:CMP_LAW_WR_CRE_UPD>
</MSG_LAW_WR_CRE_UPD>)
This message needs to be dequeued from a queue named INBOUND, parsed and inserted into a table named INFO_TO_ACCT (CREATEDATE date, RUSCODE varchar2(10), WRNO number).
Any help would be appreciated.SELECT EXTRACTVALUE(xmltype('<?xml version = "1.0"?>
<MSG_LAW_WR_CRE_UPD ID = "WMIS-4744" SRC_SYSTEM_CODE = "WMIS" SRC_SYSTEM_INSTANCE = "WMIS">
<CMP_LAW_WR_CRE_UPD>
<DATETIME>12/19/2005</DATETIME>
<RUSCODE>100</RUSCODE>
<WRNO>38213</WRNO>
</CMP_LAW_WR_CRE_UPD>
</MSG_LAW_WR_CRE_UPD>'),'//DATETIME/text()') FROM DUAL;
hope this helps. -
Read Excel file and populate in a Table
Hi,
I have a requirement in which i have to read a Excel file and populate it thoroughly in a Table. The rows and column numbers are uncertain.
Help me on this...
Regards,
KrishHi,
I can give solution to Upload Excel file.
1)Add jxl jar folder in the lib folder of ur project.
2)Go to properties of ur project and add jar to ur project.
3)Using the File upload ui ,browse and upload the file.
4)Write the read file in to ur server location using fileoutput stream.
5)then using code u can read the excelfile from the server location itself.
Here is the code:
IWDAttributeInfo attInfo =wdContext.getNodeInfo().getAttribute("upload");
binaryType=IWDModifiableBinaryTypeattInfo.getModifiableSimpleType();
fileuploaded = binaryType.getFileName();
byte b[] = wdContext.currentContextElement().getUpload();
File filename =new File("
<Server name>\<folde name>\" + fileuploaded);
try {
FileOutputStream out = new FileOutputStream(filename);
out.write(b);
out.close();
catch (FileNotFoundException e)
e.printStackTrace();
catch (IOException e)
e.printStackTrace();
int iRows = 0;
try {
Workbook wb = null;
Sheet sheet = null;
wb = Workbook.getWorkbook(filename);
sheet = wb.getSheet(0);
int iColumns = sheet.getColumns();
iRows = sheet.getRows();
int i = 0;
for (int r = 0; r < iRows; r++)
for (int c = 0; c < iColumns; c++)
Cell cell = sheet.getCell(c, r);
characterarray<i> = cell.getContents();
i++;
wb.close();
Declare Globally
//@@begin others
String fileuploaded;
IWDModifiableBinaryType binaryType;
String characterarray[] = new String [10];
//@@end
Thanks,
Durga Rao
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