Limiting the entry of special chars in a string.

Hi,
I have to restrict the entry of any character except (a-z)/(A-Z) and (0-9) in a text field of datatype VARCHAR2. (Forms 10g)
Is there any built in to implement this instead of verifying every entered character.
Thanks
Preeti

SQL> create table t(v varchar2(40) check (translate(v,'~0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ','~') is null));
Table created.
SQL> insert into t values ('abc123');
1 row created.
SQL> insert into t values ('abc+++');
insert into t values ('abc+++')
ERROR at line 1:
ORA-02290: check constraint (SCOTT.SYS_C005284) violated

Similar Messages

Verify special char is in String before append into StringBuffer

I have following code to verify A special char "X" is in the String before continue adding it to a StringBuffer:
private boolean veriChar(String poem){
if(peom.indexOf("X")==-1) return false;// make sure X is in the String
return true
However, if I only want a single X in String to return true, any method to use? for example: poem=" EXTRA TEXT" (2 Xes here) needs to be rejected to be false.

take this code compile it and see for yourself.
public class Test{
public static void main(String args[]){
    Test t = new Test();
    System.out.println(""+t.veriChar("MATT"));
    System.out.println(""+t.veriChar("MAX"));
    System.out.println(""+t.veriChar("MAXX"));
private boolean veriChar(String toCheck){
    return!((toCheck.indexOf("X")<0)||(toCheck.indexOf("X")!=toCheck.lastIndexOf("X")));
} you will see that the first and third ones return false and the second returns true which is as you want.
now an explanation of what is happening.
the method looks like this
private boolean veriChar(String toCheck){
    return!((toCheck.indexOf("X")<0)||(toCheck.indexOf("X")!=toCheck.lastIndexOf("X")));
}first we check if the special X or whatever exists in the string at all
toCheck.indexOf("X")<0;this returns true for the first test of MATT
now we check if the last occurance in our string of the special X is the same position as the first occurance. if it is then we have only one special X. if not then we have more than one special X.
toCheck.indexOf("X")!=toCheck.lastIndexOf("X")note that we check for not equals so that for MAX it returns false and for MAXX it returns true
so now we have our answers but they are inverted from what we want so we put the ! which gives the boolean opposite. so that the MAX returns true and the other two return false.

File Receiver - Special Char (182) for fieldSeparator

Hi,
I need to create files using the character 182 as columns separator. I read in the help.sap.com that the format for special char is '0xHH'.
I put for the fieldseparator the value '0xB2' but the error "Conversion initialization failed with java.lang.Exception: java.lang.NumberFormatException: Value out of range. Value:"B6" Radix:16" is returned.

Hi,
Itu2019s basically IDOC to file scenario.
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Issue: Not getting response when the document is having special chars

Please help following issue: Not getting response when the document is having special chars(Use any doc with special char(ex: &, $, <, >,.....) TestErrorFour.doc
Error message:
System.FormatException: Invalid length for a Base-64 char array. at
System.Convert.FromBase64String(String s) at
Summarize.Summarizer.AccumulateBroadcast(String filedata, String givenWords) in
c:\DocumentSummarizer\App_Code\Summarizer.cs:line 66
Code:
File 1:
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.Properties;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.hwpf.*;
import org.apache.poi.hwpf.extractor.*;
import com.lowagie.text.Document;
import com.lowagie.text.pdf.PRTokeniser;
import com.lowagie.text.pdf.PdfReader;
public class DocumentSummarizerClient {
     static Properties loadProperties() {
          Properties prop = new Properties();
          try {
               prop.load(DocumentSummarizerClient.class.getClassLoader().getResourceAsStream("vep.properties"));
          } catch (Exception ioe) {
               ioe.printStackTrace();
          return prop;
     public String getSummary(String fileName,String noOfWordsOrPercentage ){
          String summaryInputData ="";
          String summarizedData="";
          String summarizerURL = loadProperties().getProperty("Summarizer.serviceURL");
          try {
               String fileExtension=fileName.substring(fileName.lastIndexOf(".")+1, fileName.length());
               if (fileExtension.equalsIgnoreCase("doc")|| fileExtension.equalsIgnoreCase("txt")|| fileExtension.equalsIgnoreCase("pdf")) {
                              if (fileExtension.equalsIgnoreCase("txt")) {
                                   BufferedReader bufferedReader = new BufferedReader(
                                             new FileReader(fileName));
                                   String line = null;
                                   while ((line = bufferedReader.readLine()) != null) {
                                        summaryInputData += line;
                              if(fileExtension.equalsIgnoreCase("doc")){
                                   POIFSFileSystem fs = null;
                                    fs = new POIFSFileSystem(new FileInputStream(fileName));
                                     HWPFDocument doc = new HWPFDocument(fs);
                                     WordExtractor we = new WordExtractor(doc);
                                     String[] paragraphs = we.getParagraphText();
                                     for( int i=0; i<paragraphs .length; i++ ) {
                                        paragraphs[i] = paragraphs.replaceAll("\\cM?\r?\n","");
                              summaryInputData+= paragraphs[i];
                              if(fileExtension.equalsIgnoreCase("pdf")){
                                   Document document = new Document();
               document.open();
               PdfReader reader = new PdfReader(fileName);
               int pageCount =reader.getNumberOfPages();
                    for(int i=1;i<=pageCount;i++){
                              byte[] bytes = reader.getPageContent(i);
                              PRTokeniser tokenizer = new PRTokeniser(bytes);
                              StringBuffer buffer = new StringBuffer();
                              while (tokenizer.nextToken()) {
                              if (tokenizer.getTokenType() == PRTokeniser.TK_STRING) {
                              buffer.append(tokenizer.getStringValue());
                              summaryInputData += buffer.toString();
               else{
                    System.out.println("This is Invalid document. Presntly we support only text,word and PDF documents ");
               // String encoded =new String (summaryInputData.getBytes("ISO-8859-1"),"UTF-8");
                    String encoded=Base64Utils.base64Encode(summaryInputData.getBytes());
               // encoded =new String (summaryInputData.getBytes("ISO-8859-1"),"UTF-8");
                    String parameters= "base64String="+encoded+"&noOfWordsOrPercentage="+noOfWordsOrPercentage;
                    summarizedData= postRequest(parameters,summarizerURL);
                    String slength= "<string xmlns=\"http://tempuri.org/\">";
                    if(summarizedData.contains("</string>")){
                    summarizedData= summarizedData.substring(summarizedData.indexOf(slength)+slength.length(),summarizedData.indexOf("</string>"));
                    summarizedData = replaceVal(summarizedData);
                    //System.out.println("<?xml version=\"1.0\" encoding=\"utf-8\"?><![CDATA["+summarizedData+"]]>");
                    // System.out.println("Summarized data "+summarizedData);
                    if(summarizedData.contains("Please enter the percentage")){
                         summarizedData="Data given cannot be summarized further";
               else{
                    System.out.println("Data given cannot be summarized further");
                    summarizedData="";
          } catch (FileNotFoundException e) {
               return("The File is not found \n\n"+e.toString());
          } catch (IOException e) {
               return("The File is already in use \n\n"+e.toString());
          } catch (Exception e) {
               return(e.toString());
          return summarizedData;
     public static String postRequest(String parameters,String webServiceURL) throws Exception{
          Properties systemSettings = System.getProperties();
          systemSettings.put("http.proxyHost", loadProperties().getProperty("proxyHost"));
     systemSettings.put("http.proxyPort", loadProperties().getProperty("proxyPort"));
     System.setProperties(systemSettings);
          String responseXML = "";
          try {
               URL url = new URL(webServiceURL);
               URLConnection connection = url.openConnection();
               HttpURLConnection httpConn = (HttpURLConnection) connection;
               byte[] requestXML = parameters.getBytes();
               httpConn.setRequestProperty("Content-Length", String
                         .valueOf(requestXML.length));
               httpConn.setRequestProperty("Content-Type",
                         "application/x-www-form-urlencoded");
               httpConn.setRequestMethod("POST");
               httpConn.setDoOutput(true);
               httpConn.setDoInput(true);
               OutputStream out = httpConn.getOutputStream();
               out.write(requestXML, 0, requestXML.length);
               out.close();
               InputStreamReader isr = new InputStreamReader(httpConn
                         .getInputStream());
               BufferedReader br = new BufferedReader(isr);
               String temp;
               String tempResponse = "";
               while ((temp = br.readLine()) != null)
                    tempResponse = tempResponse + temp;
               responseXML = tempResponse;
               br.close();
               isr.close();
          } catch (java.net.MalformedURLException e) {
               System.out
                         .println("Error in postRequest(): Secure Service Required");
          } catch (Exception e) {
               System.out.println("Error in postRequest(): " + e.getMessage());
          return responseXML;
     public String replaceVal(String value) {
               if (value == null) {
                    value = "";
               value = value.replace("<", "<");
               value = value.replace(">", ">");
               value = value.replace("&", "&");
               return value;
          public static void main(String[] args) {
               DocumentSummarizerClient testdoc=new DocumentSummarizerClient();
               System.out.println("hello");
               testdoc.getSummary("C:\\working_folder\\vep\\UnitTestCases\\VEP1.0\\DocumentSummarizerTestData\\TestErrorFour.doc","100%");
Note: Use any doc with special char(ex: &, $, <, >,.....) TestErrorFour.doc
File 2:
---------public class Base64Utils {
private static byte[] mBase64EncMap, mBase64DecMap;
* Class initializer. Initializes the Base64 alphabet (specified in RFC-2045).
static {
byte[] base64Map = {
(byte)'A', (byte)'B', (byte)'C', (byte)'D', (byte)'E', (byte)'F',
(byte)'G', (byte)'H', (byte)'I', (byte)'J', (byte)'K', (byte)'L',
(byte)'M', (byte)'N', (byte)'O', (byte)'P', (byte)'Q', (byte)'R',
(byte)'S', (byte)'T', (byte)'U', (byte)'V', (byte)'W', (byte)'X',
(byte)'Y', (byte)'Z',
(byte)'a', (byte)'b', (byte)'c', (byte)'d', (byte)'e', (byte)'f',
(byte)'g', (byte)'h', (byte)'i', (byte)'j', (byte)'k', (byte)'l',
(byte)'m', (byte)'n', (byte)'o', (byte)'p', (byte)'q', (byte)'r',
(byte)'s', (byte)'t', (byte)'u', (byte)'v', (byte)'w', (byte)'x',
(byte)'y', (byte)'z',
(byte)'0', (byte)'1', (byte)'2', (byte)'3', (byte)'4', (byte)'5',
(byte)'6', (byte)'7', (byte)'8', (byte)'9', (byte)'+', (byte)'/'};
mBase64EncMap = base64Map;
mBase64DecMap = new byte[128];
for (int i=0; i<mBase64EncMap.length; i++)
mBase64DecMap[mBase64EncMap[i]] = (byte) i;
* This class isn't meant to be instantiated.
private Base64Utils() {
* Encodes the given byte[] using the Base64-encoding,
* as specified in RFC-2045 (Section 6.8).
* @param aData the data to be encoded
* @return the Base64-encoded <var>aData</var>
* @exception IllegalArgumentException if NULL or empty array is passed
public static String base64Encode(byte[] aData) {
if ((aData == null) || (aData.length == 0))
throw new IllegalArgumentException("Can not encode NULL or empty byte array.");
byte encodedBuf[] = new byte[((aData.length+2)/3)*4];
// 3-byte to 4-byte conversion
int srcIndex, destIndex;
for (srcIndex=0, destIndex=0; srcIndex < aData.length-2; srcIndex += 3) {
encodedBuf[destIndex++] = mBase64EncMap[(aData[srcIndex] >>> 2) & 077];
encodedBuf[destIndex++] = mBase64EncMap[(aData[srcIndex+1] >>> 4) & 017 |
(aData[srcIndex] << 4) & 077];
encodedBuf[destIndex++] = mBase64EncMap[(aData[srcIndex+2] >>> 6) & 003 |
(aData[srcIndex+1] << 2) & 077];
encodedBuf[destIndex++] = mBase64EncMap[aData[srcIndex+2] & 077];
// Convert the last 1 or 2 bytes
if (srcIndex < aData.length) {
encodedBuf[destIndex++] = mBase64EncMap[(aData[srcIndex] >>> 2) & 077];
if (srcIndex < aData.length-1) {
encodedBuf[destIndex++] = mBase64EncMap[(aData[srcIndex+1] >>> 4) & 017 |
(aData[srcIndex] << 4) & 077];
encodedBuf[destIndex++] = mBase64EncMap[(aData[srcIndex+1] << 2) & 077];
else {
encodedBuf[destIndex++] = mBase64EncMap[(aData[srcIndex] << 4) & 077];
// Add padding to the end of encoded data
while (destIndex < encodedBuf.length) {
encodedBuf[destIndex] = (byte) '=';
destIndex++;
String result = new String(encodedBuf);
return result;
* Decodes the given Base64-encoded data,
* as specified in RFC-2045 (Section 6.8).
* @param aData the Base64-encoded aData.
* @return the decoded <var>aData</var>.
* @exception IllegalArgumentException if NULL or empty data is passed
public static byte[] base64Decode(String aData) {
if ((aData == null) || (aData.length() == 0))
throw new IllegalArgumentException("Can not decode NULL or empty string.");
byte[] data = aData.getBytes();
// Skip padding from the end of encoded data
int tail = data.length;
while (data[tail-1] == '=')
tail--;
byte decodedBuf[] = new byte[tail - data.length/4];
// ASCII-printable to 0-63 conversion
for (int i = 0; i < data.length; i++)
data[i] = mBase64DecMap[data[i]];
// 4-byte to 3-byte conversion
int srcIndex, destIndex;
for (srcIndex = 0, destIndex=0; destIndex < decodedBuf.length-2;
srcIndex += 4, destIndex += 3) {
decodedBuf[destIndex] = (byte) ( ((data[srcIndex] << 2) & 255) |
((data[srcIndex+1] >>> 4) & 003) );
decodedBuf[destIndex+1] = (byte) ( ((data[srcIndex+1] << 4) & 255) |
((data[srcIndex+2] >>> 2) & 017) );
decodedBuf[destIndex+2] = (byte) ( ((data[srcIndex+2] << 6) & 255) |
(data[srcIndex+3] & 077) );
// Handle last 1 or 2 bytes
if (destIndex < decodedBuf.length)
decodedBuf[destIndex] = (byte) ( ((data[srcIndex] << 2) & 255) |
((data[srcIndex+1] >>> 4) & 003) );
if (++destIndex < decodedBuf.length)
decodedBuf[destIndex] = (byte) ( ((data[srcIndex+1] << 4) & 255) |
((data[srcIndex+2] >>> 2) & 017) );
return decodedBuf;
issue 2: Exception when passing 2MB .txt file
Steps to reproduce:
Call getSummary() with 2MB .txt file
Actual:
The following exception has occured:
1. Error in postRequest(): Unexpected end of file from server
java.lang.NullPointerException
Please provide your precious feedback/suggestions.
Thanks in advance…..
Edited by: EJP on 15/03/2011 16:52: added code tags. Please use them. Code is unreadable otherwise.

Thanks for your response….
This is enhancement project and some one develops long back.
Regarding point (b) You should be using the java.net.URLEncoder to encode URL parameters, not a base64 encoder.
DocumentSummarizerClient.java I am using base64
Ex:
// String encoded =new String (summaryInputData.getBytes("ISO-8859-1"),"UTF-8");
                    String encoded=Base64Utils.base64Encode(summaryInputData.getBytes());
               // encoded =new String (summaryInputData.getBytes("ISO-8859-1"),"UTF-8");
                    String parameters= "base64String="+encoded+"&noOfWordsOrPercentage="+noOfWordsOrPercentage;
                    summarizedData= postRequest(parameters,summarizerURL);
                    String slength= "<string xmlns=\"http://tempuri.org/\">";
                    if(summarizedData.contains("</string>")){
                    summarizedData= summarizedData.substring(summarizedData.indexOf(slength)+slength.length(),summarizedData.indexOf("</string>"));
                    summarizedData = replaceVal(summarizedData);
                    //System.out.println("<?xml version=\"1.0\" encoding=\"utf-8\"?><![CDATA["+summarizedData+"]]>");
                    System.out.println("Summarized data "+summarizedData);
                    if(summarizedData.contains("Please enter the percentage")){
                         summarizedData="Data given cannot be summarized further";
Above specific please I need to modify to resolve above issue.
Could you please suggest me what changes I need to do.
Waiting for positive response.

Handling special char in the HTTP-RFC ?

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Hi Hemant,
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Have a look at this thread : Re: Change encoding from utf-8 to iso-8859-1 in JMS receiver!

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We are just wondering is this a number being set in Oracle Apex, and whether we can modify it.
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Hi Thomas,
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Regards
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My Blog: http://www.inside-oracle-apex.com
APEX 4.0 Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

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Hi,
We are on SRM 5.0 (SRM_SERVER 550) Sp07. SAp 4.7 backend.
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BUS2121001##䟅㳤탇ᾣᾣઃ????#?? ######## 01############################
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BUS2121001GAEp#?g8Ia#####o# ################ 01###########
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Edited by: Srivatsan on Feb 29, 2008 1:14 PM

Hi,
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See the foll notes:
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316903 - SAPGUI: How to use I18N mode
215015 - Unicode UTF-8 printing with a Lexmark printer
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79991 - Multi-Language and Unicode support of mySAP solutions
73606 - Supported Languages and Code Pages
BR,
Disha.
Do reward points for useful answers.

Only one special char is shown in rsallowedchar table

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As far as my knowledge is concerned, BW allows 72 special char using RSKC, but when I see the table RSALLOWEDCHAR table it shows only one char of latest entry, all the previous entered char have not been shown there? how this magic?
Please explain, points will be given
regards

Hello Ganesh,
You only see the last character since all the other characters you've entered belong to the permitted characters which are.
!"%&'()*+,-./:;<=>?_0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'
If your try entering ¤±ß. You will see it in the table.
Rgds,
Sophian

Special char

i have special char inverted question mark ¿
is coming in my field how do i replace with '- '
thanks

this is my code
$*$ begin of routine - insert your code only below this line        -
... "insert your code here
*-- fill table "MONITOR" with values of structure "MONITOR_REC"
*-   to make monitor entries
... "to cancel the update process
   raise exception type CX_RSROUT_ABORT.
... "to skip a record
   raise exception type CX_RSROUT_SKIP_RECORD.
... "to clear target fields
   raise exception type CX_RSROUT_SKIP_VAL.
Replace all occurrences of '¿' in Source_fields-NOMEN_E with '-'.
and erro message i got is this
E:The field "SOURCE_FIELDS-NOMEN_E" cannot be changed. -

Getting parameters from URL: use of Special Chars

I'm unable to retrieve the Special Chars from URL parameters. Does someone have an idea where to look for?
Examples where no Special Chars is retrieved :
...App?param=Aménagement
...App?param=Am<é>nagement
...App?param=Am%E9nagement
I'm using this code :
          IWDProtocolAdapter protocolAdapter =
               WDProtocolAdapter.getProtocolAdapter();
          IWDRequest request = protocolAdapter.getRequestObject();
                                String param = request.getParameter("param");
Thanks!

okay, So if I use :
...App?param=Am%E9+nagement
How would you then integrate URLDecoder.decode in the following code?
IWDProtocolAdapter protocolAdapter =
     WDProtocolAdapter.getProtocolAdapter();
IWDRequest request = protocolAdapter.getRequestObject();
String param = request.getParameter("param");

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Larry,
Here's an approach that I've used...
In the Purchases table, Aux column, the expression is:
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Fill Down
This expression builds a string that identifies the item and the ocurrance of that item.
The Date column of the Summary tables, cell a3, contains:
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Fill Across, then fill down.
Regards,
Jerry

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Is there a java.String method (or similar) which will replace MS Word special chars - such as "culry apostrophes" - with HTML compliant versions?
cheers
Hugh
Edited by: inabind on Aug 11, 2008 7:39 AM

Yes. Oddly enough their names start with "replace".
But you don't necessarily need to convert the left curly quote to ߡ or whatever it converts to. You could also use UTF-8 as your HTML's encoding and just leave that character as is.

How can I Retrieve special chars from a HTTP Request??

Hi,
I want to retrieve special chars from a request
Chars like accents used in spanish languages or symbols?
Is there any way to do it
Thanks in advance
Alejandro Arredondo

This is my problem
For example:
This is my form:
<form>
<input type="text" name="test">
</form>
I do write a char on the text area. Something like "?" or "?"
or some words with accents
When I retrieve the value with
String value = request.getParameter("test");
and print it
out.println("TEST= " + test);
It prints another symbol that isn't the one I sent in my form.
why?
Thanks

Problem with special chars in BLOB datatype using contains keyword

Facing problem, when part searching with special chars in BLOB datatype. It is considering the non alpha-numeric chars as a separtor in a provided string
EX:
SELECT *
FROM RESUME_TEST P,grst_candidate d
WHERE d.candidate_id = p.candidate_id
AND CONTAINS(P.CAND_RESUME,'%VB.NET%',1) > 0
Strings: , VB.NET , PL/SQL AS/400 , C etc..
Followed the below approaches
1) created a table:
Syntax: create table resume_Test(cand_id number(10),cand_resume blob);
2) inserted the values into this table upto 60,000
3) created a context index
3.1 created preferences
Syntax:
BEGIN
ctx_ddl.create_preference('try_lexer3','BASIC_LEXER');
ctx_ddl.set_attribute('try_lexer3','printjoins','-_~!@#$%^&*(){}[],=?\;|><.+');
END;
3.2 created context index
Syntax:
CREATE INDEX CANDRESUME_CTX_IDX ON resume_test (cand_resume)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS ('LEXER try_lexer3 memory 500M');
4) while executing this index, it is taking much time approx 6 hrs(plz explain why it is taking time)
5) Problems:
5.1 when searching with string(VB.NET , PL/SQL AS/400 , C etc..) it is considering the special char as a separator
5.2 used escape char (\) also, but no effect
5.3 when searching with single char, it is giving error (ORA-29902,ORA-20000,DRG-51030)
5.4 getting the above error with wild card chars (& ,_, (),{},[])
So, please explain the clear scenarios, why am getting this error , and how to get the proper results.

Have you tried adding the / char to the printjoin characters?
Indexing can take a lot of time, depending on the amount of data and your machine's power. You could try to parallelize the index creation and / or assign more memory
CREATE INDEX CANDRESUME_CTX_IDX ON resume_test (cand_resume)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS ('LEXER try_lexer3 memory 2000M') PARALLEL 8;

Limiting the entry of special chars in a string.

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