How to implement simple java stored procedure

I'm using Maxdb 7. 6.03.15 (standalone - no SAP) as a Migration Environment to a new centralized SAP solution.
Most of the work is done in internal DBproc but I need to trig external procedure (those one's written in Java).
I have already spent too much time to find related information and because I need only very simple triggreing, I don't want to learn and deploy product like NetWeaver ... anyone could give me minimal information on how to do that ...
If I'm right, I need to configure the MessageServer and develop a minimist java proc that should be able to register the DBproc (java language) inside DB and handle the MessageServer msg generated by my internal DBproc call to the newly registered java proc ?
I just want to do that as simple as possible, I don't need locking scheme neither multiple request queue ... because I control all access to the DB and all process are completely serialized (It was a design rule).
Could anyone help me ?

Thank's Lars for that quick answer !
You wrote,
> AFAIK one development target is to implement UDEs (User Defined Extensions) that will allow the creation of "inside-the-db-code" in >other languages than the one used for the stored procedures.
did you mean "JavaUdeServer" ? I see some interesting code in source tree about that . I investigate a little about but I miss the binary javaUdeServer code (and I don't want to rebuild the distribution also because of different version). The message returned when I tried to call a registered java stored proc was smoething like 'Impossible to contact UDE server'
But the code is still embedded in the kernel (as It can be found in the map files).
I don't find any documentation on that feature ,is it for security reason ? If so I'm ready for a 'No disclosure agreement' (It's not a personal request).
Of course, if the only way is NetWeaver that could be OK but the task seem's to me so heavy regarding my so simple need's ... if there is a short way (samples ?) to kick me on NetWeaver to reach my goal you're welcome !!
(Some piece of code on NetWeaver that allow a procedure to call to external java proc that return hostname will be enough ...).
For you information, (because I have the feeling I got your answer) I already install a trial NetWeaver some week's ago but I don't spent (and I don't have) many times to use It and I have the bad sensation to try driving a big truck only to move a cup of coffee ...(of Java of course !) but perhaps I'm too impatient ?
Regards,
Michel

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Missing Defines Error in Simple Java Stored Procedure

Anyone have any suggestions on what might be causing the unusual behavior described below? Could it be a 10g java configuration issue? I am really stuck so I'm open to just about anything. Thanks in advance.
I am writing a java stored procedure and am getting some SQLException's when executing some basic JDBC code from within the database. I reproduced the problem by writing a very simple java stored procedure which I have included below. The code executes just fine when executed outside of the database (10g). Here is the output from that execution:
java.class.path=C:\Program Files\jEdit42\jedit.jar
java.class.version=48.0
java.home=C:\j2sdk1.4.2_04\jre
java.vendor=Sun Microsystems Inc.
java.version=1.4.2_04
os.arch=x86
os.name=Windows XP
os.version=5.1
In getConnection
Executing outside of the DB
Driver Name = Oracle JDBC driver
Driver Version = 10.1.0.2.0
column count=1
column name=TEST
column type=1
TEST
When I execute it on the database by calling the stored procedure I get:
java.class.path=
java.class.version=46.0
java.home=/space/oracle/javavm/
java.vendor=Oracle Corporation
java.version=1.4.1
os.arch=sparc
os.name=Solaris
os.version=5.8
In getConnection
We are executing inside the database
Driver Name = Oracle JDBC driver
Driver Version = 10.1.0.2.0
column count=1
column name='TEST'
column type=1
MEssage: Missing defines
Error Code: 17021
SQL State: null
java.sql.SQLException: Missing defines
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:158)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:206)
at oracle.jdbc.driver.OracleResultSetImpl.getString(Native Method)
at OracleJSPTest.test(OracleJSPTest:70)
Here is the Java code:
// JDBC classes
import java.sql.*;
import java.util.*;
//Oracle Extensions to JDBC
import oracle.jdbc.*;
import oracle.jdbc.driver.OracleDriver;
public class OracleJSPTest {
private static void printProperties(){
     System.out.println("java.class.path="+System.getProperty("java.class.path"));
     System.out.println("java.class.version="+System.getProperty("java.class.version"));
     System.out.println("java.home="+System.getProperty("java.home"));
     System.out.println("java.vendor="+System.getProperty("java.vendor"));
     System.out.println("java.version="+System.getProperty("java.version"));
     System.out.println("os.arch="+System.getProperty("os.arch"));
     System.out.println("os.name="+System.getProperty("os.name"));
     System.out.println("os.version="+System.getProperty("os.version"));
private static Connection getConnection() throws SQLException {
     System.out.println("In getConnection");
Connection connection = null;
// Get a Default Database Connection using Server Side JDBC Driver.
// Note : This class will be loaded on the Database Server and hence use a
// Server Side JDBC Driver to get default Connection to Database
if(System.getProperty("oracle.jserver.version") != null){
          System.out.println("We are executing inside the database");
          //connection = DriverManager.getConnection("jdbc:default:connection:");
          connection = new OracleDriver().defaultConnection();
}else{
     System.out.println("Executing outside of the DB");
     DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
     connection = DriverManager.getConnection("jdbc:oracle:thin:@XXX.XXX.XXX.XX:XXXX:XXXX","username","password");
DatabaseMetaData dbmeta = connection.getMetaData();
System.out.println("Driver Name = "+ dbmeta.getDriverName());
System.out.println("Driver Version = "+ dbmeta.getDriverVersion());
return connection;
public static void main(String args[]){
     test();
public static void test() {
     printProperties();
Connection connection = null; // Database connection object
try {
     connection = getConnection();
     String sql = "select 'TEST' from dual";
     Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery(sql);
     ResultSetMetaData meta = rs.getMetaData();
     System.out.println("column count="+meta.getColumnCount());
     System.out.println("column name="+meta.getColumnName(1));
     System.out.println("column type="+meta.getColumnType(1));
     if(rs.next()){
          System.out.println(rs.getString(1));
} catch (SQLException ex) { // Trap SQL Errors
     System.out.println("MEssage: " + ex.getMessage());
     System.out.println("Error Code: " + ex.getErrorCode());
     System.out.println("SQL State: " + ex.getSQLState());
     ex.printStackTrace();
} finally {
try{
if (connection != null || !connection.isClosed())
connection.close(); // Close the database connection
} catch(SQLException ex){
ex.printStackTrace();
Message was edited by:
jason_mac

Jason,
Works for me on Oracle 10.1.0.3 running on Red Hat Enterprise Linux AS release 3 (Taroon).
Java code:
import java.sql.*;
* Oracle Java Virtual Machine (OJVM) test class.
public class OjvmTest {
public static void test() throws SQLException {
    Connection conn = DriverManager.getConnection("jdbc:default:connection:");
    PreparedStatement ps = null;
    ResultSet rs = null;
    try {
      ps = conn.prepareStatement("select 'TEST' from SYS.DUAL");
      rs = ps.executeQuery();
      if (rs.next()) {
        System.out.println(rs.getString(1));
    finally {
      if (rs != null) {
        try {
          rs.close();
        catch (SQLException sqlEx) {
          System.err.println("Error ignored. Failed to close result set.");
      if (ps != null) {
        try {
          ps.close();
        catch (SQLException sqlEx) {
          System.err.println("Error ignored. Failed to close statement.");
}And my PL/SQL wrapper:
create or replace procedure P_J_TEST as language java
name 'OjvmTest.test()';And here is how I execute it in a SQL*Plus session:
set serveroutput on
exec dbms_java.set_output(2000)
exec p_j_testGood Luck,
Avi.

How to create a java stored procedure

hi @all
i have no expierence with java
my plan
i want to select (create view) data from a table which is located in sql server db
with a java stored procedure.
i won't use the way Generic Connectivity/Transparent Gateways (http://download-west.oracle.com/docs/cd/A87860_01/doc/server.817/a76960/hs_admin.htm).
can anybody help me?

Download JDeveloper. Look for examples on http://otn.oracle.com.

Java- Stored Procedure with Call by Result

Hi Oracle-Community,
I am looking for some example Code how to use a Java-Stored Procedure with Out-Parameters. Don't get me wrong. I dont want to call a Procedure with Out Parameters from Java (there are a lot of examples for this out there) . I just want to implement the Call by Result concept in a Java-Stored Procedure. A Client will call this Procedure with some parameters and the Java Procedure will fill them. So my first question: is this possible? And my second Question: How to implement it?
Greetings.

I found out a solution. It is very simple.
Just defining the parameters as java array (e.g. String[] P1). The first value (P1[0]) is the returned value.
At last just set in JDeveloper in the "Edit Method Signature" Dialog the parametermode to OUT.
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Oracle Database Java Developer's Guide.

DBMS_JOB on Java Stored Procedure problem

Hi all,
(running on Oracle 9i : 9.2.0.7.0 64bit on HP/UX)
I have a Java Stored procedure that reads a table
One of the fields in this table is a CLOB containing some more SQL.
We then executeQuery() that SQL (and e-mail the output).
(Obviously I also have PL/SQL wrapper around it, which we'll call PROCNAME).
For certain pieces of SQL, this second executeQuery() fails throwing ORA-00942, but only when run from a DBMS_JOB(!).
Calling "CALL PROCNAME('argument')" from sqlplus/toad works fine, but setting "PROCNAME('argument')" to run as a DBMS Job fails on some SQL with the above error. (All as the same username).
java.lang.StackTraceElement doesn't seem to exist in Oracle java, so the only error I have to go on is e.getMessage() from SQLExecption which returns:
ORA-00942: table or view does not exist
Any help at this strangeness would be appreciated!
nic

Hi Cris:
May be is a problem of the effective user which is running the procedure.
Which is the auth_id directive at the PLSQL call spec?
Look at this example procedure UploadNews for example:
http://dbprism.cvs.sourceforge.net/dbprism/cms-2.1/db/cmsPlSqlCode.sql?revision=1.21&view=markup
this procedure calls to the cmsNews.doImport which is implemented as Java Stored Procedure.
Also check if your loadjava operation is not using -definer flag.
Best regards, Marcelo.

Java stored procedure in Oracle 8i

Hi,
I read in the whitepaper of Oracle "Stored Procedure Tutorial", I have a little problem understanding the following syntax in the example enclosed, please help.
In Java environment the method:
public static void assignEMailAddress(Connection conn, int eno, String fname, String lname) throws Exception;
this method take 4 parameters, but when it is public to SQL, the parameter is ignored!
Is this understood by the DBMS?
Is this Connection-typed parameter must ALWAYS be the first one in the proceudre list or the procedure list can be in any order?
The tutorial is given in Oracle 8i, Lite, we will be using the real Entreprise Oracle 8i, does it make any difference in how we should load java stored procedure?
I really appreciate any help. thanks
null

Mapping between Java types and pl/sql types
can only be done for standard Java datatypes.
You cannot publish a java procedure accepting a Connection variable to PLSQL.
Hope this helps.

Publishing JSP form JAVA stored procedure [Oracle8i 8.1.7]

Hi folks,
I wonder if anybody knows a way to publish JSP from JAVA stored procedure.
I know there is a way to load java class using PL/SQL package DBMS_JAVA.loadjava(), or
oracle.aurora.server.tools.loadjava.LoadJavaMain.serverMain() from java.
But I need somthing like publishjsp to translate the JSP.
Also would be nice if I can invoke this from a LOB where I have stored my JSP.
Any ideas?
Mitko

I case anyone is interested.
I managed to find out what I was doing wrong.
First when you call a stored procedure that is in a package and is a method of a class. You call it referencing the packagename.method. Leaving out the class name. Also, since this was a method that returns a value. The return value has to be assigned to a variable or used in an sql statement. Such as:
var x number;
call claimsprocedures.ip(19990033) into :x;call completed
print x;(then the value is displayed in sql*plus
scirco.
<BLOCKQUOTE>quote:<HR>Originally posted by scirco:
I created a simple java stored procedure and depoloyed it using the deployment wizard. The code for the class is as follows:
// Copyright (c) 2000 CAP-MPT
package ClaimsProcedures;
import sqlj.runtime.*;
import sqlj.runtime.ref.*;
import java.sql.*;
import java.sql.SQLException;
* A Sqlj class.
* 
* @author Sebastian Circo
public class ClaimsFinancialHistory extends Object {
* Constructor
public ClaimsFinancialHistory() {
public static int IP(int Claimno) throws SQLException {
int Val;
Val = 0;
#sql {select sum(amount) into :Val from reshist
where claimno = :Claimno and type = 'RI'};
return Val;
The wizard indicated that everything deployed properly. However when I try to call the procedure/method "IP" from sql*plus I get the following message: ORA-06576: not a valid function or procedure name. I double checked to make sure that I'm publishing the "IP" method and I still get the same error. I also tried calling the procedure with the schema.class.procedure form, still same error.
Can anyone help?
thanks
scirco<HR></BLOCKQUOTE>
null

Java stored procedures in 8.1.6

I created a simple java stored procedure and depoloyed it using the deployment wizard. The code for the class is as follows:
// Copyright (c) 2000 CAP-MPT
package ClaimsProcedures;
import sqlj.runtime.*;
import sqlj.runtime.ref.*;
import java.sql.*;
import java.sql.SQLException;
* A Sqlj class.
* 
* @author Sebastian Circo
public class ClaimsFinancialHistory extends Object {
* Constructor
public ClaimsFinancialHistory() {
public static int IP(int Claimno) throws SQLException {
int Val;
Val = 0;
#sql {select sum(amount) into :Val from reshist
where claimno = :Claimno and type = 'RI'};
return Val;
The wizard indicated that everything deployed properly. However when I try to call the procedure/method "IP" from sql*plus I get the following message: ORA-06576: not a valid function or procedure name. I double checked to make sure that I'm publishing the "IP" method and I still get the same error. I also tried calling the procedure with the schema.class.procedure form, still same error.
Can anyone help?
thanks
scirco

I case anyone is interested.
I managed to find out what I was doing wrong.
First when you call a stored procedure that is in a package and is a method of a class. You call it referencing the packagename.method. Leaving out the class name. Also, since this was a method that returns a value. The return value has to be assigned to a variable or used in an sql statement. Such as:
var x number;
call claimsprocedures.ip(19990033) into :x;call completed
print x;(then the value is displayed in sql*plus
scirco.
<BLOCKQUOTE>quote:<HR>Originally posted by scirco:
I created a simple java stored procedure and depoloyed it using the deployment wizard. The code for the class is as follows:
// Copyright (c) 2000 CAP-MPT
package ClaimsProcedures;
import sqlj.runtime.*;
import sqlj.runtime.ref.*;
import java.sql.*;
import java.sql.SQLException;
* A Sqlj class.
* 
* @author Sebastian Circo
public class ClaimsFinancialHistory extends Object {
* Constructor
public ClaimsFinancialHistory() {
public static int IP(int Claimno) throws SQLException {
int Val;
Val = 0;
#sql {select sum(amount) into :Val from reshist
where claimno = :Claimno and type = 'RI'};
return Val;
The wizard indicated that everything deployed properly. However when I try to call the procedure/method "IP" from sql*plus I get the following message: ORA-06576: not a valid function or procedure name. I double checked to make sure that I'm publishing the "IP" method and I still get the same error. I also tried calling the procedure with the schema.class.procedure form, still same error.
Can anyone help?
thanks
scirco<HR></BLOCKQUOTE>
null

Problem In creating Java stored procedure- Urgent

Hi Guys,
I try to create a simple Java stored procedure but I get the following error message. Can you help me to sort out the problem please?.
SQL> create or replace and compile java source named "Hello"
2 as
3 public class Hello {
4 public static String hello()
5 {
6 return "Hello Oracle World";
7 }
8 }
9 /
Warning: Java created with compilation errors.
SQL> show error java source Hello;
No errors.
Thanks in advance
anthony
null

I had a similar issue, the reason for that was picking the incorrect partner link.
Make sure the name of the selected partner link in the invoke output variable is matching with the Assign, in you case lets say you mapped the
Invoke
output variable is invoke_1_CallStoredProcedure_OutputVariable ( not nvoke_1_CallStoredProcedure_OutputVariable_1)
From
<Invoke_1_CallStoredProcedure_OutputVariable>
<LF_STATUS>
To
P_lf_status ( variable)
most of the time multiple variables are created when we try to select the output variable s in the Invoke.

How can I implement the connection pool in my java stored procedure

my java stored procedures (in database 'B') have to connect to another oracle database ,let's say 'A'. And how can I implement the behavior like the so-called connection pool in my java stored procedure in 'B', as below.
1. database B, has 2 java stored procedures sp1 and sp2
2. both sp1 and sp2 connects to databse 'A'
whatever I call the sp1 and sp2 and the database 'A' always only one connected session from sp1 and sp2 in database 'B'.
THANKS A LOTS...

my problem is I have a lots of java stored procedures need to cnnect to the remote oracle db, and I hope the remote db can only have a connected session from my java stored procedures in my local db. I try as below
class sp{
static Connection conn=null; //the remote db connection,
public static void sp1(){...}//procedure 1, using conn
public static void sp2(){...}//procedure 2, using conn,too
I can 'see' the 'conn' variable if I invoke the sp1() and sp2() from the same client application(maybe sqlplus). But if I invoke the sp1() from client 'A' and invoke sp2() from client 'B' then the sp1() and sp2() can not see the 'conn' variable for each other. I think it's because the two clients cause oracle to create two instances of the class 'sp' and the sp1() and sp2() located in different instance seperately. Thus the sp1() and sp2() can not see 'conn' for each other. They can only see its own 'conn'.
To connect to the remote db from the java stored procedure is easy but is it possible to connect to the remote db via database link from the java stored procedure at my local db ? If so, then I also archive my goal .
BTW , thanks a lots...
andrew :-)

How to execute a procedure or function from Java Stored procedure

Hi,
I am new to Java Stored Procedures. I am working on Oracle 8i and JVM 1.3.1. I want to call a PL/SQL procedure from within Java. I have tried looking at severa; cources but they are quite high level for me. Can someone provide a simple example including the Source Code for .java file and also the calling function's code?
Heres a sample of what I have been working on: I an including Java code, and Function code and how I call the function. Instead of doing "select sysdate from dual" I want to do like "create table temp1(var1 varchar2(10))" or similar... like "exec procname(var1)" etc.
Thanks in advance.
PS. The variable passed in function is just a dummy variable.
-----Begin Java code-------
import java.sql.SQLException;
import java.sql.PreparedStatement;
import java.sql.Statement;
import java.sql.Connection;
import java.sql.ResultSet;
//Oracle Extensions to JDBC
import oracle.jdbc.driver.OracleDriver;
public class Test2{
public static String Testing(String d) {
Connection connection = null; // Database connection object
try {
// Get a Default Database Connection using Server Side JDBC Driver.
// Note : This class will be loaded on the Database Server and hence use a
// Se[i]Long postings are being truncated to ~1 kB at this time.

what your after is
Connection conn = DriverManager.getConnection
("jdbc:oracle:oci:@<hoststring>", "scott", "tiger");
CallableStatement cs = conn.prepareCall ("begin ? := foo(?); end;");
cs.registerOutParameter(1,Types.CHAR);
cs.setString(2, "aa");
cs.executeUpdate();
String result = cs.getString(1);
a more complete description can be found in the documentation at
http://download-west.oracle.com/docs/cd/B10501_01/java.920/a96654/basic.htm#1001934
Dom

How to retrieve 'long' column with 32K length in Java stored procedure

For some reasons, we are not using CLOB, BLOB, or BFILE to store large objects and I have to live with LONG. So I wrote a Java stored procedure to insert, select and manipulate a LONG column by retrieving the LONG into a java.lang.String class (which happens to be the Java class mapped to the LONG SQL datatype). It all works fine as long as the length of the value being retrieved is less than the magic figure of 32767 bytes (which is the restriction on LONG and VARCHAR2 datatype in PL/SQL as well). So looks like Oracle's implementation of the JVM limits String values to a max of 32767 bytes. Suggestions on how to overcome this limitation (other classes that you suggest or do I have to move to files)?
Thanks,
Jeet
null

the jvm has nothing to do with it ...
this is a pol/sql limitation on parameters in stored procedures.
and java stored procedures require a clal spec that makes the j-s-p look like a pl/qsl stored proc.

How to retrive a STANDARD stored procedure with java?

I have searched and searched, I have not found a direct, CLEAR, answer to this.
how do you call a standard, (not java) stored procedure from oracle database that requires input variables?
I have looked, searched and read and cannot find one simple example code, or message that explains this in clear concise info.
can some one please send me a email on this:
[email protected]
Don't bother leaving a message here, once I save this message and come back a day later its gone and can't be found by me..

Hi... I am trying to create a dts package which is called by a stored procedure... How can i do this? IF possible can you please send me the code as well..
Thanks a ton...
Susan_Davis

How to use a Java Thread in a Java Stored Procedure?

I am working with java stored Procedures but i have a problem when i use threads.While the thread is running all the processes are blocked because the thread is not detatched.I don't know if it is impossible to use Thread in a java stored procedure.i made many researches but didn't find information about this case of Thread.If someone knows what to do in this case it will be helpfull for me.Thanks

The JAR is already load by using CREATE JAVA RESOURCE ... or "loadjava -resolve –force -user p/p@SID –genmissing -jarasresource MyJar.jar"
If we can create a resource by SQL or loadjava, how can I use it in my java code?
Edited by: 847873 on 28 mars 2011 06:05
Edited by: 847873 on 28 mars 2011 06:07

How to use signed classes/Jars in Java Stored Procedure?

I am using java encryption API in my java application that I want to deploy as java stored procedure. The API is kept in the signed jar files.
The Application is running in the MS-DOS environment but not in Oracle8i.
It gives me following error.
java.lang.ExceptionInInitializerError: java.lang.SecurityException: Cannot set
up certs for trusted CAs
at javax.crypto.b.<clinit>([DashoPro-V1.2-120198])
at javax.crypto.KeyGenerator.getInstance([DashoPro-V1.2-120198])
at DesKey.GenerateKey(DesKey.java:63)
declare
ERROR at line 1:
ORA-29532: Java call terminated by uncaught Java exception:
java.lang.ExceptionInInitializerError
ORA-06512: at line 4
(Note: I have enabled the java output in SQL Plus editor otherwise it will give only the second part of error that starts from ERROR at line 1:)
please guide me how to solve this problem.
Salman Hameed

Salman,
If you do not get a reply on this forum, I recommend you post this question on the Oracle JVM discussion forum as well.
In addition, I would recommend checking the documentation for Oracle8i. The Oracle8i Java Developer's Guide, the Java Stored Procedures Guide, and the JDBC Developer's guide may have some information on this topic. You can get to this doc from the OTN Documentation page. Click on Oracle8i, then General Documentation, Release 2 (8.1.6), then scroll down to see the link for the Oracle8i Java Developer's documetation. All of the books mentioned above are available from that link.

How to implement simple java stored procedure

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