Problem with static vars of SQLJ java stored procedure

Hi,
When I'm calling a PL/SQL stored procedure that call a Java stored procedure from another Java stored procedure, the second call to the Java stored procedure does not see the first Java stored procedure static variables.
Why is that?
Can I configure it to work otherwise so all the Java stored procedure calls in this session will share the same static variables?
Thanks

Hi:
Remove your ; at the end of the sql string.
String sql = "SELECT VERSION_OFA FROM XX_PARAMETERS";
I don't know why JDev accept the ; at the end of string in a prepare statement but AFAIK its not legal.
If your are using the SQL pane of JDev may be the tool strip the ; for you.
Best regards, Marcelo.

Similar Messages

Issue with Oracle.sql.NUMBER in Java Stored Procedure

When we try to make a call to the Oracle.sql.NUMBER(String) inside a java stored procedure and pass values from '01' to '09', it throws java.lang.StringIndexOutOfBoundsException: String index out of range: 3
We use Oracle 9.2.0.6 - JServer Release 9.2.0.6.0.
It works fine for other values. Please find below the code used for simulating the issue outside the application. Thanks.
create or replace and compile java source named testNumber as
import oracle.sql.NUMBER;
import java.sql.SQLException;
public class TestNumber
       public static String convertNumber(String parm) {
                 NUMBER nTest;
                 try {
                         nTest = new NUMBER(parm);
                         return "TRUE";
                 }catch (SQLException sqle) {
                         return "FALSE";
create or replace function test_number (p_str in varchar2) return varchar2 as
language Java name 'TestNumber.convertNumber(java.lang.String) return
java.lang.String';
select test_number('05') from dual; - Throws exception ORA-29532: Java call terminated by uncaught Java exception: java.lang.StringIndexOutOfBoundsException: String index out of range: 3
select test_number('5') from dual; - Works fine
select test_number('010') from dual; - Works fine

Siva,
I'm only guessing, but it could be an Oracle bug, in which case I suggest checking with Oracle Support.
(You do have a support contract, don't you? ;-)
Did you try compiling and running your java class "TestNumber" outside the database?
Class "oracle.sql.NUMBER" should be in Oracle's JDBC driver, I believe.
Good Luck,
Avi.

Problems with datatypes while callling MS-SQL stored procedure

Hi
We have a stored procedure in MS-SQL server ( Sql Server 2000 ) that we are invoking from XI 3. ( SP18) using a receiver adapter communication channel . One of the parameters of the stored procedure has a decimal data type . In XI design time - in the mapping - to the stored procedure data type - we have specified 'DECIMAL' as the type for attribute of the import parameter of the stored procedure . My source field in the mapping is of type string.
This is resulting in an error on the Adapter Engine - 'Cannot convert datetime to decimal' ( as seen in RWB ) -
Are we right in specifying DECIMAL as the type in the XI mapping to the type attribute of the stored procedure parameter ?
Any pointers, thoughts shared on this is appreciated. Correct answers will be rewarded.

Sai and Others
The problem was that - among the big number of stored procedure parameters - that were to be passed from XI to the stored procedure call - we had to disable a few of the fields inbetween - inorder to test the stored procedure call with the main parameters that were to be passed.
This disabling of the selective fields inbetween - messed up the order inbetween the XI stored procedure datatype and the actual stored procedure definition. We learnt a lesson not to disable fields within a stored procedure - now the call to the stored procedure is going through without using any conversion function for the string to decimal - as long as a decimal value keeps appearing at the source field always ( which is the case here )
Thanks for your pointers, thoughts and suggestions...

ExceptionInInitializerError: problems with static vars...

Hi!
I got an Env class.
It has many static variables:
public static LogFile log=new LogFile("log.log");
....and other LogFiles, IniFiles, Connection, etc.
I dont want to send this vars via parameters to other objects...
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Is there other way to declare global variables, that can reached by any other class?

Is there other way to declare global variables, that can reached by any other class?No, you're doing it correctly by what you have posted here - there is something else you're coding incorrectly.
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Post your code between [code] and [/code] tags as described in Formatting Help on the message entry page. Cut and paste the code, rather than re-typing it (re-typing often introduces subtle errors that make your problem difficult to troubleshoot). Please preview your post when posting code.

Invoking Unix command with java stored procedure

Hi,
I have a perfectly working environment and now I am trying to replicate the same in another server. I have a java stored procedure which invokes the Unix command using java Runtime.exec() in my code named "run". I am sure that the code is called and the java class run is resolved in oracle as I could see that in dba_java_resolvers dictionary. But I am not sure whether the function in java is called or whether a exception is thrown. how to identify this? Could there be any thing to do with settings in oracle side? please help me.
Thanks in advance,
Marutha

Hi,
Do you get any output while running the code?
I'm testing similar solution and if there are any errors or Oracle can't execute the program due to permissions or other issues the error information will be displayed. Also in the Java class itself you need to catch exceptions and print stack trace to standard output.
declare
x number;
begin
dbms_output.enable(1000000);
dbms_java.set_output(1000000);
x:=system_command.run_command('testconnect.sh');
dbms_output.put_line('Returned value='||x);
exception
when others then dbms_output.put_line('Sql error='||substr(sqlerrm,1,250));
end;
<system_command.run_command> - replace with a call to your java stored procedure.

Return national language strings from java stored procedures

Hi, all.
How does i can return String which contains national characters from java stored procedure? I.e. convert UTF java string to national language of database. It's does not processing automatically (why?).
declaration of procedure:
CREATE OR REPLACE FUNCTION TestNLSString RETURN VARCHAR2
AS
LANGUAGE JAVA
NAME 'test.SomeClass.getNLSString() return java.lang.String';
SELECT TestNLSString AS X FROM DUAL;
X
iiiii
OS: Windows 2000 Server
Oracle Server version: Oracle 8.1.7.1.4

Ok. I had a specific problem.
I want to use java stored procedure (function) to make a connection to remote db using supplied connection parameters make some quieries there end return results in a form of structured data - object.
I have defined an object type in a database where the function will reside. I granted execute privilege to public user on this type, made public synonyms to both, the object type and the function, so anybody connected to the same database would have an access to this functionality.
I supposed that if I supply connection parameters for some other user but the same database when running the function, everything should go smooth. Yeah.
My java code executed ok: it made a connection to the db with some x user, it resolved object type descriptor given (oracle.sql.StructDescriptor), but pl/sql wrapper function reported the error I've mentioned. If I executed the function giving it the connection parameters for same account as where object type was declared, everything went fine.
My final solution is:
Make TWO! connection in java code: 1st for ("jdbc:default:connection:"), 2nd for remote database account.
Use first connection to construct oracle.sql.StructDescriptor
Use second connection to retreive data from remote db

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.

Calling JPA from a Java Stored Procedure

Is it possible to call JPA from a java stored procedure? If so, does anyone have example? How do you setup the persistence.xml?
How does the peformance compare with straight JDBC in a java stored procedure?
Thanks for any help!
Johnny

Hi Johnny:
Basically you can run any JDK 1.5 framework inside your Oracle 11g JVM, I have experience integrating Lucene IR library as a new [Domain Index for Oracle 11g/10g|http://docs.google.com/View?id=ddgw7sjp_54fgj9kg] .
I am not familiar with JPA internals but my advice is howto handle the connection inside the OJVM and the configuration files.
Some time ago I took a look to SpringFramework integration and I found that writing a new ApplicationContext class which handles the loading of beans.xml from XMLDB repository instead a file should be enough to work.
Another important point is the life cycle of the [Oracle internal JVM|http://download.oracle.com/docs/cd/E11882_01/java.112/e10588/chtwo.htm#BABHGJFI]. Unlike an standard JVM the OJVM is created once you first connect from the middle tier at OCI level and remains in execution during the connection pool existence.
I mean, if you connect using a JDBC pool the JVM will remains running across multiple soft open/close connections of your middle tier application. This is good because you can read your persistence.xml file using a Singleton class and this expensive operation will be re-used by multiple open/close operation done from the middle tier.
I suggest you do a simple Proof of Concept with a Hello World application and check if it works.
Remember that any security issues will be notified to the .trc files, security issues are related to the strong security layer configured by default inside the OJVM, for example you can not read any files from the OS file system without an specific grant, you need another grant to access to the class loader and so on, but you can simply grant this specific needs to a database role and then grant this role to the user which connect to the OJVM.
Another important point is related to the [End-of-Call Optimization|http://download.oracle.com/docs/cd/E11882_01/java.112/e10588/chtwo.htm#BABIFAAI] this can be useful if you want to perform some clean up in your Singleton class at the level of per-statement execution.
Best regards, Marcelo

Java Stored Procedure Deployment Problem with JDev 3.1.1.2

Dear JDeveloper Team:
I am having a problem deploying a test Java stored procedure to the database. In the Deployment Profile Wizard Connection tab, it displays no connection in the connection dropdown even though I have defined some connections that have been sucessfully connected to the database.
Please help.
Thanks,
Tom

Tom,
Verify that your Connections are valid as follows:
Double Click on the Connections folder of JDeveloper Navigator.
This opens up the Connection Manager.
Make sure you have defined JDBC Connections.
Pick your connection of intrest and select Edit... and then press the Test button to test the conneciton.
If this is a valid JDBC connection, then it should appear later when you run the deployment wizard.
-John

Problems with java stored procedure.

I have a java stored procedure that uses a package called RmiJdbc
which allows calling remote JDBC data sources from any java capable
machine.
I've loaded the RmiJdbc classes into oracle via the loadjava
command and everything seems to come up valid.
The stored procedure does a Class.forName() to get the driver
registered, than attempts to connect to the remote RMI driver.
The particular line it dies on is this (see the error below):
c = DriverManager.getConnection("jdbc:rmi:" + rmiHost + "/" + url);
A mangled version of this (minus the Oracle specific stuff) works
from the command line correctly. Can somebody point me in a
direction to figure out what's going on here?
THanks,
Eric
Oracle9i Enterprise Edition Release 9.0.1.3.0 - 64bit Production
With the Partitioning option
JServer Release 9.0.1.3.0 - Production
ORACLE_HOME = /oracle/v901ee
System name: HP-UX
Node name: athena
Release: B.11.00
Version: A
Machine: 9000/889
Instance name: PASDB2
Redo thread mounted by this instance: 1
Oracle process number: 13
Unix process pid: 7839, image: oracle@athena (TNS V1-V3)
*** SESSION ID:(8.547) 2002-08-15 15:41:27.221
java.rmi.UnmarshalException: Error unmarshaling return; nested exception is:
java.lang.NullPointerException
java.lang.NullPointerException
at sun.rmi.server.LoaderHandler$LoaderKey.<init>(LoaderHandler.java)
at sun.rmi.server.LoaderHandler.lookupLoader(LoaderHandler.java)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java)
at java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at java.io.ObjectInputStream.inputArray(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java)
at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java)
at sun.rmi.registry.RegistryImpl_Stub.lookup
at org.objectweb.rmijdbc.RJConnection.<init>(RJConnection:83)
at org.objectweb.rmijdbc.Driver.connect(Driver:135)
at java.sql.DriverManager.getConnection(DriverManager.java)
at java.sql.DriverManager.getConnection(DriverManager.java)
at TurnoverInfoPlusInterface.insertInterfaceRecords(TurnoverInfoPlusInterface:53)
java.sql.SQLException: Error unmarshaling return; nested exception is:
java.lang.NullPointerException
at org.objectweb.rmijdbc.Driver.connect(Driver:140)
at java.sql.DriverManager.getConnection(DriverManager.java)
at java.sql.DriverManager.getConnection(DriverManager.java)
at TurnoverInfoPlusInterface.insertInterfaceRecords(TurnoverInfoPlusInterface:53)

More info...I'm also seeing "ORA-03113: end-of-file on communication channel". I checked the user trace file and didn't get much help...it indicated an "exception signal: 11" and core-dump type stuff that had no meaning to me.

Performance problem with java stored procedure

hi,
i developped a java class, then I stored it in Oracle 8.1.7.
This class contains several import of other classes stored in the database.
It works, but the execution perfomances are disappointing. It's very long. I guess, that's because of the great number of classes to load that are necessary for my class execution.
I tried to increase the size of the java pool (I parameter 70 Mo in the java_pool_size parameter of the init.ora), but the performance is not much better.
Has anyone an idea to increase the performance of this execution of my class ?
In particular, is there a way to keep permanently in memory the java objects used by my class ?
Thanks in advance
bye
[email protected]
null

before running Java, the database session needs to be Java enabled; this might be the reason why it is taking so long. If this is the case, you should see an improvement in subsequent calls, once a database session is Java enabled, other users can benefit from it.
Kuassi
I have some performance issue with java stored procedure. Hope some one will be able to help me out. I'm using java stored procedures in my application and basically these procedures are used to do some validation and form the XML message of the database tables. I have noticed that when I call the PL/SQL wrapper function, it is taking time to load the java class and once the class is loaded the execution is faster. Most of the time is spent for loading the class rather than executing the function. if I reduce the class load time, I can improve the performance drastically. Do any one of you know how to reduce the class load time. The following are the platform and oracle version.
O/S: IBM AIX
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Problem passing REF CURSOR to JAVA STORED PROCEDURE

Hi,
I've written a small Java class with a static method and
imported that into Oracle 8i. The method expects a
java.sql.ResultSet object as parameter. According to the
documentation of Oracle, a REF CURSOR (cursor variable) maps to
java.sql.ResultSet in JDBC.
The definition of the Java Stored Procedure was accepted without
problems:
CREATE OR REPLACE PROCEDURE RESULTSETPASSINGTESTPROC (row
WASTypes.GenericCurType)
as language java
name 'sqlj.ResultSetPassingTest.testResultSetPassing
(java.sql.ResultSet)';
WASTypes is a package containing the definition of the generic
cursor:
CREATE OR REPLACE PACKAGE WASTYPES
is
TYPE GenericCurType IS REF CURSOR;
END WASTypes;
In a function I'm opening the cursor via
'Open cursorVariable for sqlStatement';
Then this cursor variable is passed to the java method and the
error ORA-03113 is shown.
I tried to solve the problem by changing the type of the
parameter to oracle.sql.REF without success.
Does anybody know what wents wrong?
Thanks in advance.
Jan

Hi,
I've written a small Java class with a static method and
imported that into Oracle 8i. The method expects a
java.sql.ResultSet object as parameter. According to the
documentation of Oracle, a REF CURSOR (cursor variable) maps to
java.sql.ResultSet in JDBC.
The definition of the Java Stored Procedure was accepted without
problems:
CREATE OR REPLACE PROCEDURE RESULTSETPASSINGTESTPROC (row
WASTypes.GenericCurType)
as language java
name 'sqlj.ResultSetPassingTest.testResultSetPassing
(java.sql.ResultSet)';
WASTypes is a package containing the definition of the generic
cursor:
CREATE OR REPLACE PACKAGE WASTYPES
is
TYPE GenericCurType IS REF CURSOR;
END WASTypes;
In a function I'm opening the cursor via
'Open cursorVariable for sqlStatement';
Then this cursor variable is passed to the java method and the
error ORA-03113 is shown.
I tried to solve the problem by changing the type of the
parameter to oracle.sql.REF without success.
Does anybody know what wents wrong?
Thanks in advance.
Jan

Problem of java stored procedure

hi,
now I use the oracle9i JDeveloper9.0.3.1 to develop java stored procedure and then publish it to oracle9i database.
In the database I create PL/SQL procedure to invoke the java stored procedure.But I encounter the problem,that is ,when I run the PL/SQL procedure ,it throw the java.lang.NullPointerException ,while the java class,the java stored procedure can run correctly invoked by the main class of java.The code of the java stored procedure is as follows:
import java.sql.*;
import java.util.Properties;
public class SQLServerEventDistribute
public static void sqlServerSaveData(String hostName,String databaseName,String user,String password,String tableName,int x1,int y1,int x2,int y2,String ip)
String url="",sql="",userName="",passwd="";
Connection connection;
Statement statement;
url="jdbc:microsoft:sqlserver://"+hostName+":1433;DatabaseName="+databaseName+";User="+user+";Password="+password;
sql="INSERT INTO "+tableName+" VALUES("+x1+","+y1+","+x2+","+y2+",'"+ip+"')";
Properties property=new Properties();
property.setProperty(userName,user);
property.setProperty(passwd,password);
try
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
// DriverManager.registerDriver(new com.microsoft.jdbc.sqlserver.SQLServerDriver());
connection=DriverManager.getConnection(url,property);
statement=connection.createStatement();
statement.execute(sql);
}catch(ClassNotFoundException connectSQLServerEx)
System.out.println(connectSQLServerEx.getMessage());
catch(SQLException connectSQLServerEx)
System.out.println(connectSQLServerEx.getMessage()+connectSQLServerEx.getErrorCode());
the main class is as follows:
public class Test
public static void main(String[] args)
SQLServerEventDistribute.sqlServerSaveData("gsm","gsmd","sa","sa","IPBinding",11,45,24,21,"23.1.248.12");
and the PL/SQL procedure is as follows:
PROCEDURE TEST AS
BEGIN
SQLSERVERSAVEDATA('gsm','gsmd','sa','sa','IPBinding',11,45,24,21,'23.1.248.22');
END;
How can I deal with it?
can you tell me?
thanks

Hi JavaQQ,
This is just a guess, but I think you need to load the
Micro$oft SQLServer JDBC driver into the Oracle
database (using the "loadjava" utility).
In any case, there are several ways -- apart from JDBC
-- for accessing a different database from within an
Oracle database. Have you tried searching the Oracle
Web sites for suitable products?
Hope this helps.
Good Luck,
Avi.abramia ,thank you very much.
but I have load the Microsoft SQLServer JDBC driver into the Oracle database .
When I debugged the PL/SQL procedure,the exception was thrown at line connection=DriverManager.getConnection(url,property);
What's the problem with it?

APEX fails with Java stored procedure that creates a JDBC connection

Hello!
We are facing a strange problem since we have upgraded from Oracle 10g and Apache to Oracle 11g with Embedded Gateway.
Here is what we do:
** APEXX calls a PL/SQL package function "OPEN_CONNECTION" that wraps a Java stored procedure called "openConnection".*
FILE_READER_REMOTE_API.openConnection(user, password, host, port, service);
** The Java stored procedures "openConnection" opens a JDBC connection to an other database:*
public class FileReaderRemote {
private static Connection conn = null;
private static DefaultContext remoteContext = null;
public static void openConnection(String user, String password, String host, String port, String service) throws SQLException {
// Load the Oracle JDBC driver
DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
java.util.Properties props = new java.util.Properties();
props.put ("user", user);
props.put ("password", password);
//props.put ("database", "//" + host + ":" + port + "/" + service);
props.put ("database", host + ":" + port + ":" + service);
props.put("v$session.program", "FileReaderRemote2");
// Connect to the database
remoteContext = Oracle.getConnection("jdbc:oracle:thin:", props);
This procedure used to work fine before the upgrade, but now we see the following:
* It still works when called directly from TOAD or SQL*Plus, even under the user ANONYMOUS.
* When called from APEX and the target database is Oracle 11g, it still works.
* When called from APEX and the target database is Oracle 10g, it takes several minutes and we receive this error:
*"Socket read timed out"*
We have tested the following workaround:
We have created a database link to our own database and called the stored procedure through that database link.
FILE_READER_REMOTE_API.openConnection*@loopback*(user, password, host, port, service);
This works, but is not really an option.
I hope some one of you can explain this strange behaviour to me.
Best regards,
Matthias

You wrote
"Java stored procedures -- by definition - are stored in the 8i rdbms. !!"
From the Oracle8i Java Stored Procedures Developer's Guide
Release 8.1.5
A64686-01
"If you create Java class files on the client side, you can use loadjava to upload them into the RDBMS. Alternatively, you can upload Java source files and let the Aurora JVM compile them. In most cases, it is best to compile and debug programs on the client side, then upload the class files for final testing within the RDBMS"
This means that you can create shared classes that are used on both the client and server side. The source does not need to reside within the server (according to their documentation). Please also note the following from the Oracle8i JDBC Developer's Guide and Reference Release 8.1.5 A64685-01 for using the getConnection() method on the server:
"If you connect to the database with the DriverManager.getConnection() method, then use the connect string jdbc:oracle:kprb:. For example:
DriverManager.getConnection("jdbc:oracle:kprb:");
Note that you could include a user name and password in the string, but because you are connecting from the server, they would be ignored."
So if you're coding a shared class that is to run on both the client and server side, you might do something like this:
Connection conn =
DriverManager.getConnection(
System.getProperty("oracle.server.version") == null
? "jdbc:oracle:thin:@hostname:1521:ORCL"
: "jdbc:oracle:kprb:"),
"youruserid","yourpassword");
As stated earlier, the userid and password are supposedly ignored for server connections retrieved in this manner. I haven't tried this yet, but it is documented by Oracle.
Regards,
Steve
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Java stored procedure problem(oracle db)

HI,
we have a java stored procedure with the following definition, and that works as we want it to:
CREATE OR REPLACE FUNCTION processBulletin(in_varchar VARCHAR2) RETURN VARCHAR2
AS LANGUAGE JAVA
NAME 'JavaParser.Bufr_Ingest.processBulletin(java.lang.String) return java.lang.String';
And the Java portion:
public static String processBulletin(String in_bull)
... do something with in_bull
The problem is that we've recently discovered that the 32767 size restiriction on the input parameter varchar2 is too small. I don't want to rewrite the entire Java procedure. I figured the simplest (or at least temporary)solution would be to have the Java procedure accept a CLOB, convert that clob to a string and continue as it would. I was hoping someone might be able to tell me if the following would be possible:
CREATE OR REPLACE FUNCTION processBulletin(in_clob CLOB) RETURN VARCHAR2
AS LANGUAGE JAVA
NAME 'JavaParser.Bufr_Ingest.processBulletin(oracle.sql.CLOB) return java.lang.String';
And the Java portion:
public static String processBulletin(oracle.sql.CLOB in_clob)
String in_bull = clob_in.getSubString(1, (int)clob_in.length());
... do something with in_bull
Thanks

I don't know about Java stored procedures, but in JDBC you usually use streams to work with CLOBS. Here's Oracle JDBC Developers Guide, Working with LOBs

Problem with static vars of SQLJ java stored procedure

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