Abap-table access via JDBC

Hello,
we have a java-program, that accesses data via jdbc to a mysql-database.
Now we want to migrate the mysql-table to abap-table.
How can we access from the java-program to theese migrated abap-tables via jdbc?
Regards Oliver

Oliver,
If you want to access those tables from SAP, then you have to use the Java Connectors (
JCO).
Please write the more details abount the java IDE and OS, which you are using I will send you appropriate help.
Thanks

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10G Forms connect to MS Access via JDBC

A new project requires a 10G Form to connect to MS Access database. I understand 10G no longer connects to Access using ODBC. Will JDBC work? If JDBC can be used does anyone have a "How To" document or examples on how to connect orms 10G to MS Access via JDBC
Thanks
Ralph

I dont think it will work. In 10g forms is going to implement transparent gateways.
Is there a possibility of getting the data from MS access directly to Oracle database and then connect to Oracle DB from forms ?
Rajesh Alex

WebDynpro Abap MSS: Access via "NULL" object reference not possible

hi,
My customer send me the following link to Appraisal Documents (Manager) MSS
http://server.sap.portal:1810/sap/bc/webdynpro/sap/HAP_START_PAGE_POWL_UI_MSS/
http://a.imageshack.us/img685/5959/mss3.jpg (logon in Costumer SAP System)
http://a.imageshack.us/img225/4008/mss4.jpg (Appraisal Documents (Manager) MSS run succesful)
Link that also run by the SICF in my customer is correct.
But when I run in my SAP System see the following error
http://a.imageshack.us/img715/5355/mss1j.jpg (SCIF in my SAP System)
http://a.imageshack.us/img44/5346/mss2.jpg (SCIF - test service)
http://a.imageshack.us/img840/1677/mss2b.jpg (Error, without window logon)
<b> Access via "NULL" object reference not possible</b>
Other question is: In what part of MSS is this option? because the ESS is in Career and Jobs / Appraisals Documents
http://a.imageshack.us/img683/9900/careerjob3.jpg (Employee Self Service / Career and Jobs / Appraisals Documents)
thanks for your posts and answer
Ivan

Hello
The most important information is (again) missing: which object reference is initial ("NULL")?
The ABAP dump will tell you.
Below I show an example how this can happen (and be avoided):
LOOP AT lt_accountings INTO ls_accounting.
lo_po_account ?= ls_accounting-accounting.
ENDLOOP.
" QUESTION: Are you sure that lo_po_account hold an instance ???
" If LO_PO_ACCOUNT is empty the following statement will give you the dump.
ls_mepoaccounting = lo_po_account->get_data( ).
" And that is how to avoid this (at least the dump. Whether your logic is still ok is another matter...)
CHECK ( lo_po_account IS BOUND ).
ls_mepoaccounting = lo_po_account->get_data( ).
Regards
Uwe

Inserting data into Ms Access via jdbc odbc connectivity

Can anyone help dictate what's wrong with this below method which is supposed to be adding new record(append) into my ms Access Table. This is giving me a hell of problem, I thought I have everything well. The module is branched via a Swing ui. Can you debug this ? and send a new code to try?
public void Query3(){
try{
//while(rs.next() )
stmt.executeUpdate("INSERT INTO pupRegister_Table1 " +
"VALUES ('1001', 'Simpson', 'Mr.', 'Springfield', '2001')");
//stmt.executeUpdate ("INSERT INTO pupRegister_Table1 " +
//"VALUES(var_firstname)");
// Close the result set, statement and the connection
rs.close() ;
stmt.close() ;
conn.close() ;
} catch( SQLException se )
System.out.println( "SQL Exception:" ) ;
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Thanks a lot,
that contribution really helped but I realised that I Missed adding the
insertRow();
that did the trick and it works fine now
Thanks
Yet another issue is about inserting the current date into the date field having data type as date. Hence I am using the Jdbc stuff. I am having problem here
any further help?

Internal PLSQL Tables Access via SQL. But how ?

Hello,
I want to write the result of a database query in an internal PLSQL Table. After that i would like work with this internal PLSQL Table
in a Package/Procedure/Function.
Important for me is to access the internal Table via SQL because i have to refactor a package wich is working with 46 Database Tables an plain SQL. I
would like to change these DB Tables into internal PLSQL Tables.
I have written a short example wich will explain my approach to solving this problem.
The syntax will be accepted by the Database but my 'dbms_output.put_line' statement at the end is empty or blank.
What do i wrong ? Would be nice if anyone can help me out.
With best regards
Jens
pre work :
create table PERSON_DB_TABLE
(SURNAME VARCHAR2(50),
LASTNAME VARCHAR2(50));
insert into PERSON_DB_TABLE values
('JENS','FOERSTER');
insert into PERSON_DB_TABLE values
('MAX','MEIER');
insert into PERSON_DB_TABLE values
('MARTHA','MUSTERMANN');
create type PERSON_OBJECT as object (
    SURNAME VARCHAR2(50),
    LASTNAME VARCHAR2(50));
create type PERSON_NESTED_TABLE as table of PERSON_OBJECT;
now my anonymous block
declare
   v_PERSON_OBJECT        PERSON_OBJECT;
   v_PERSON_NESTED_TABLE PERSON_NESTED_TABLE;
   v_PERSON_OBJECT_2      PERSON_OBJECT;
begin
   for v_counter in (select SURNAME, LASTNAME into v_PERSON_OBJECT.SURNAME,
                                                                                        v_PERSON_OBJECT.LASTNAME
                              from PERSON_DB_TABLE)
     loop
        v_PERSON_NESTED_TABLE := PERSON_NESTED_TABLE(v_PERSON_OBJECT);
     end loop;
   for v_counter in (select SURNAME, LASTNAME into v_PERSON_OBJECT_2.SURNAME,
                                                                                        v_PERSON_OBJECT_2.LASTNAME
                              from TABLE (v_PERSON_NESTED_TABLE))
     loop
        dbms_output.put_line(v_PERSON_OBJECT_2.LASTNAME);
     end loop;
end;

1386a7b8-e834-43bf-a0d4-922b548bb70b wrote:
I need this, because my customer didn't like the idea to use Database Tables instead of Variables in the RAM. So he wants this procedure redesigned.
As Mike says, keep this person away from your database.
Customers should not be dictating how to implement technical solutions, they should be providing business and logical requirements.
PL/SQL arrays/collections use expensive PGA memory, taking up valuable server resources.
Copying data from the database to PGA memory to try and process it using PL/SQL is bad design. SQL is designed specifically for data manipulation using database tables, so it's the ideal way to do process data... directly on database tables.

Remote database access via JDBC?

Hello,
Can anyone give me info on accessing remote databases (i.e. Microsoft
Access, etc) from Java programs (Servlets, JSP's, Classes) residing on the
iSeries (AS400) or perhaps any platform?
I currently have a couple of web applications set up on the Websphere App server that access DB2/400 database and I also have some Java Classes on PC's that access MS Access datafiles. I would like to begin writing the majority of my applications that run on the iSeries (or host system) that can remotely access other databases on our network.
Any info would be of great help to me.
Thank you
Don

I don't know of any existing Access JDBC drivers that support remote access, after all, the Access database itself is not remote access capable except via file sharing. One possibility is to look for a Type 3 JDBC driver that supports reuse of other Type 1 (ODBC bridge), Type 2 (Java/Native Mix) and Type 4 (pure Java)JDBC drivers on the server side.
If you were using WebLogic Server, I suppose you could use its remote JDBC facilities, but that won't help you.
One problem you will have to face is that Access JDBC drivers are not (if I recall) meant to be used in a multithreaded fashion. Good luck. By the way, it might be far simpler to port the Access database to DB2/400.
Chuck

Error in extracting String value from MS ACCESS via JDBC

Something wierd occurs in my program. I have a ACCESS database table named FormDetail. The attributes are:
name memo
val memo
The actual data store in such a table is
haihe 2
String test="SELECT name, val FROM FormDetail";
rs = stmt.executeQuery(test);
while(rs.next())
{ String name = rs.getString("name");
String value = rs.getString("val");
System.out.println("name: "+name+" value: "+value);
When I execute the code, the output is
name: haihe value:
NO VALUE print out. Why?
Any suggestion will be helpful! Thanks!

Though not using Access myself in the moment, I remember a lot of post about its memo fields.
Recommend to search for "+access +memo" here.

Using IN and TABLE operators via JDBC

Greetings,
Hope this may be of benefit to someone.
Any and all feedback greatly appreciated.
import java.math.BigDecimal;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import javax.sql.DataSource;
import oracle.sql.ARRAY;
import oracle.sql.ArrayDescriptor;
import oracle.jdbc.pool.OracleDataSource;
* Tests an SQL query that uses the IN operator and the TABLE keyword.
* The TABLE keyword transforms a PL/SQL collection into a regular table.
* Hence a query can use the IN operator with a PL/SQL collection.
* A PL/SQL collection maps to a java array.
* Hence you can execute a query using a <code>PreparedStatement</code> and an
* array as the parameter value.
* Note, however, that the PL/SQL collection type <em>must</em> be a database
* named type, one that is defined using the CREATE TYPE [DDL] statement.
public class SqlQuery {
public static void main(String[] args) {
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    oa[0] = new BigDecimal("9712061");
    oa[1] = new BigDecimal("9712062");
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    ResultSet rs = null;
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      ods.setURL(url);
      c = ods.getConnection();
      ArrayDescriptor ad = ArrayDescriptor.createDescriptor(
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                                                       c);
      ARRAY a = new ARRAY(ad, c, (Object) oa);
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      ps.setArray(1, a);
      rs = ps.executeQuery();
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        System.out.println(rs.getString(1));
    catch (Exception x) {
      x.printStackTrace();
    finally {
      if (rs != null) {
        try {
          rs.close();
        catch (Exception x) {
          System.err.println("Failed to close result set.");
          x.printStackTrace();
      if (ps != null) {
        try {
          ps.close();
        catch (Exception x) {
          System.err.println("Failed to close statement.");
          x.printStackTrace();
      if (c != null) {
        try {
          c.close();
        catch (Exception x) {
          System.err.println("Failed to close database connection.");
          x.printStackTrace();
}Good Luck,
Avi.

Thanks a lot for your replies!
We've solved the issue by converting the de table of record type into a sys_refcursor.
The types are now defined globally (instead of in a package) and we wrote a wrapper around the original function:
create or replace type my_result_rec as object(
val1 number,
val2 number );
create or replace type my_result_tab is table of my_result_rec;
function my_function_wrapper(
    param1 in number,
    param2 in number
) return sys_refcursor is
    result sys_refcursor;
begin
    open result for
      select * from table(my_function(param1,param2));
    return result;
end;
Rob

Doubt Regarding Table Accessed via DB Link

I have the following SQL:
select * from tab1@db_link tab1, tab2
where tab1.col1=tab2.col2
and tab1.col2=99;
Can I ensure that Oracle brings data corresponding to:
select * from tab1@db_link tab1
where tab1=99;
and then joins the data with tab2.
What could be fastest way to access data in this manner? Basically i need to tune a similar query.

No not much difference. On both the cases oracle goes for the same plan. Here is a small test case
select t.*
from t@to_inlabnew t, t1
where t.object_id = t1.object_id
   and t.object_type = 'TABLE'
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.03       0.16          0          0          1           0
Execute      1      0.00       0.00          0          0          0           0
Fetch      171      1.09       1.68          0          6          0        2544
total      173      1.12       1.84          0          6          1        2544
Rows     Execution Plan
      0 SELECT STATEMENT   GOAL: ALL_ROWS
   2544   HASH JOIN
   1000    INDEX   GOAL: ANALYZED (FAST FULL SCAN) OF 'T1_IDX' (INDEX)
199792    REMOTE OF 'T' (REMOTE)
               [TO_INLABNEW.REGRESS.RDBMS.DEV.US.ORACLE.COM]
              SELECT "OWNER","OBJECT_NAME","SUBOBJECT_NAME","OBJECT_ID",
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              "TIMESTAMP","STATUS","TEMPORARY","GENERATED","SECONDARY" FROM
                "T" "T" WHERE "OBJECT_TYPE"='TABLE'
select t.*
from (select * from t@to_inlabnew where object_type = 'TABLE') t, t1
where t.object_id = t1.object_id
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.00       0.00          0          0          0           0
Fetch      171      1.09       1.46          0          6          0        2544
total      173      1.09       1.46          0          6          0        2544
Rows     Execution Plan
      0 SELECT STATEMENT   GOAL: ALL_ROWS
   2544   HASH JOIN
   1000    INDEX   GOAL: ANALYZED (FAST FULL SCAN) OF 'T1_IDX' (INDEX)
199792    REMOTE OF 'T' (REMOTE)
               [TO_INLABNEW.REGRESS.RDBMS.DEV.US.ORACLE.COM]
              SELECT "OWNER","OBJECT_NAME","SUBOBJECT_NAME","OBJECT_ID",
              "DATA_OBJECT_ID","OBJECT_TYPE","CREATED","LAST_DDL_TIME",
              "TIMESTAMP","STATUS","TEMPORARY","GENERATED","SECONDARY" FROM
                "T" "T" WHERE "OBJECT_TYPE"='TABLE'

Database access via Jdbc in JSP

Hey guys,
Need a help here..I want to compare a data to existing data in a table sequencially.
1)re is the example, if i have a user login prog,i want to compare the user already exists in that data table.
if so how can print the user id's to compare?
and 2)at if the user id is a wave file(binary data) in SQl? since its immposible to compare the binary data?
keep me posting,thanks

1. Well, perform a query.
2. Who says you can't compare "binary" data?

How to handle BLOB field in receiver JDBC adapter into ABAP table

Dear Experts,
I am working in a synchronous scenario with Sender ABAP Proxy to Oracle Database as receiver via SAP PO 7.4.I will be calling a stored procedure view with fields ID, NAME,Age,*** and BLOB (Image binary).
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2. If yes, would the JAVA program have to deal with other 4 fields.
3. Can I use a UDF mapping to this BLOB field.
Regards
Rebecca...

Dear Praveen,
Thanks for your response...
Please correct me if I am wrong.
1. For 1-1 response mapping for BLOB field, I will use just use the below UDF code.
public static byte[] hexStringToByteArray(String s) {
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            byte[] data = new byte[len / 2];
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                        data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
                                                                                     + Character.digit(s.charAt(i+1), 16));
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Lost index stats in Ora 8.1.6 Tables when selecting via jdbc

Hi,
i'm using JBuilder8 and Kylix2 on a Linux machine with Oracle oci drivers of client 8.1.7.
The connect through JB8 jdbc via DBPilot is succesful and shows the tables of the db.
After executing a select on any table the index stats of this table are lost.
Kylix works fine without this failure.
Thanks for any comments to this problem
Jens

Well, it's not the PL/SQL code that is causing a problem. Everything worked fine for many months. Then one day (without any changes in the environment or code) the update of a table from a java application (via JDBC) fails. The same update done directly on the DB with SQL Plus still succeeds!
This led us to think that something is wrong with the JDBC connection (which was up for several months). Maybe a memory corruption?
Anyone that experienced similar problems with JDBC?

Access ABAP Table using Java (NWDS/JCO)

All,
I am trying to setup a jco connection from java program through NWDS to ECC abap table.
However I am getting the following error in NWDS:
Exception in thread "main" java.lang.ExceptionInInitializerError: JCO.classInitialize(): Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'
JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc [C:\Program Files\Java\jdk1.6.0_45\bin\sapjcorfc.dll: Access is denied]. java.library.path [C:\Program Files\Java\jdk1.6.0_45\bin;.]
and a parity error on my system:
"Parity blocked an attempt by javaw.exe to run sapjcorfc.dll because the file is not approved. If you require access to this file, please contact your system administrator. Scroll down for diagnostic data."
Here is the Java code...per the SAP website:
package com.sap.pi.updateAbapSxmbAdminParams;
import com.sap.mw.jco.*;
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private static JCO.Client theConnection;
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public static void main(String[] args) {
   createConnection();
   retrieveRepository();
   try {
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    JCO.ParameterList listParams = function.getImportParameterList();
    listParams.setValue("BSAUTHORS", "QUERY_TABLE");
    theConnection.execute(function);
    JCO.Table tableList = function.getTableParameterList().getTable("SXMSCONFVLV");
    if (tableList.getNumRows() > 0) {
     do {
      for (JCO.FieldIterator fI = tableList.fields();
      fI.hasMoreElements();)
       JCO.Field tabField = fI.nextField();
       System.out.println(tabField.getName()
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         tabField.getString());
      System.out.println("n");
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   catch (Exception ex) {
    ex.printStackTrace();
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   try {
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   catch (Exception ex) {
    System.out.println("Failed to connect to SAP system");
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   try {
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   try {
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   catch (Exception ex) {
    ex.printStackTrace();
   return null;

Hi Vicky,
You need authorization to the S_TABU_DIS object, talk with the ABAP basis team about this to find the more restrictive role.
It's not a good idea to use the RFC_READ_TABLE, for the wide permissions needed. You could think to develop a Z RFC for this. You can check pros/cons in this document: http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a83ec690-0201-0010-14ac-bd1d75e24a7d?overridelayout=t…
Regards.

Access ABAP table in Webdynpro Java application

Hi All
Is it possible to access ABAP table in Webdynpro Java application
Please provide your input
Thanks
Karthi D.

Hi you will connect to the remote SAP system, the
backend, using an Adaptive RFC MOdel. To access database tables, you can make use of existing functions in terms of RFC function modules. For each function module you need, the system generates a corresponding Java proxy class. All the generated proxy classes and interface are bundled together in the RFC model and treated as part
of your Web Dynpro project
In WebDynpro java you RFC by using Model :
Adaptive RFC Model
1. automatically adapts to changes in function module signature
2 provides support for data types and extensibility
3.support for different structure definitions in different backend
systems (release dependent structures, custom adaptation)
Basic principles and guidelines
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/11c3b051-0401-0010-fe9a-9eabd9c216de
See this blog
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/wdjava/faq%2b-%2bmodels%2b-%2badaptive%2brfc
http://help.sap.com/saphelp_nw04s/helpdata/en/6a/11f1f29526944e8580c5e59333d96d/frameset.htm
Thanks,
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Problem with Web Dynpro ABAP Adobe form Access via 'NULL' object reference

Hi All!
I'm a beginner of Adobe form.
problem 1:
I tried to display data in Adobe interactive form according to the tutorial :https://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/7783. [original link is broken] [original link is broken] [original link is broken]
I checked every step, but unfortunately it reported an error: Access via 'NULL' object reference not possible. I found that the error happens when trying to get element of the context node.
I also have such problem when I was studying the tutorial https://wiki.sdn.sap.com/wiki/display/WDABAP/CallAdobeFormthroughABAPWebDynpro.
problem 2:
I can't input any data in input box or click any button even if I selected the property 'enabled' of the interactive form while my colleague can do it on his computer. Does it means that there are some thing wrong with my adobe reader?
Hope anyone could save me,
Thanks & Regards,
Murloc

>
tomcat123 wrote:
> Hi All!
> I'm a beginner of Adobe form.
> problem 1:
> I tried to display data in Adobe interactive form according to the tutorial :https://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/7783. [original link is broken] [original link is broken] [original link is broken]
> I checked every step, but unfortunately it reported an error: Access via 'NULL' object reference not possible. I found that the error happens when trying to get element of the context node.
> I also have such problem when I was studying the tutorial https://wiki.sdn.sap.com/wiki/display/WDABAP/CallAdobeFormthroughABAPWebDynpro.
Check that you have entries in the Table MARI. else you will get this message.
> problem 2:
> I can't input any data in input box or click any button even if I selected the property 'enabled' of the interactive form while my colleague can do it on his computer. Does it means that there are some thing wrong with my adobe reader?
>
Compare the adobe live cycle version. it will work fine with 7.0/7.1
> Hope anyone could save me,
> Thanks & Regards,
> Murloc

Abap-table access via JDBC

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