Java class call from Stored Proc or trigger

Hi Experts!
I have windows 2K server with Oracle 8i Enterprise Edition installed. Please let me know if I can call a java class from Stored Procedure or Trigger. If there is a way, then help me out with code sample or description.
Regards,
Atul
[email protected]

Atul,
Couple of questions to you, off the subject,
* Why NULL NULL registration?(You already revealed your name at the bottom)
* Why email at the bottom? This is already a discussion forum.
To your qn, it is very much possible. It is not something that one can explain in a single thread. It takes your machine setup for JVM, your knowledgebase on JAVA and other things. Please find notes on External Procedure Calls, which should give you a start. If you are running into problems, please come back with specifics.
Thx,
SriDHAR

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Using Java to call COBOL stored proc on DB2 database

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Thanks in advance.

I'm trying to call a stored procedure on a DB2 database from a Java Servlet. This is my code:
try{
cstmt = con.prepareCall("{CALL MKTDS80A
cstmt.setShort(1, shFiscalYr);
cstmt.setInt(2, iInvoiceNbr);
cstmt.setString(3, sInvoiceTypeCd);
cstmt.setInt(4, iUserNbr);
cstmt.setString(5, sFormId);
cstmt.setString(6, sSubSysCd);
cstmt.setShort(7, shModNbr);
cstmt.registerOutParameter(8, Types.INTEGER);
cstmt.registerOutParameter(9, Types.INTEGER);
cstmt.registerOutParameter(10, Types.CHAR);
cstmt.registerOutParameter(11, Types.INTEGER);
cstmt.registerOutParameter(12, Types.CHAR);
cstmt.execute();
iParm1 = cstmt.getInt(8);
iParm2 = cstmt.getInt(9);
sParm3 = cstmt.getString(10);
iParm4 = cstmt.getInt(11);
sParm5 = cstmt.getString(12);
if (iParm1 == 0){ bReturnZero = true;
CloseSQLStatement(cstmt);
catch (SQLException ex) {
CloseSQLStatement(cstmt);
bReturnZero = false;
System.out.println("SQL exception occurred: "
+ ex.toString());
return iParm1;
It seems to fail on the execute and I get the following SQL Exception message:
SQL exception occurred in callStoredProcedure method:
COM.ibm.db2.jdbc.DB2Exception: [IBM][CLI Driver][DB2] SQL0440N
No function by the name "MKTDS22B" having compatible arguments was
found in the function path. SQLSTATE=42884
Can anyone tell me what the problem might be? I've checked the parameter datatypes and everything matches up. Does anyone have a clue?
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S'one tell me how to call Oracle Stored Proc from Java

Hi,
I have a problem in calling the Stored proc using callable statement.It looks like we are doing the same thing or no..
Pl..let me know if you can correct me..Am enclosing the stored proc and java Code...
CREATE OR REPLACE PROCEDURE StoreFTPAddress (FTP in FTPTYPE) is
BEGIN
INSERT INTO DES.FTPSERVICE(
FTPID,
COMPANYID,
SERVERNAME,
DIRECTORY,
USERNAME,
PASSWORD,
INSTRUCTIONS)
VALUES( FTPID.NEXTVAL,
FTP.COMPANYID,
FTP.SERVERNAME,
FTP.DIRECTORY,
FTP.USERNAME,
FTP.PASSWORD,
FTP.INSTRUCTIONS);
END;
JAVA CODE :;
public String retrieveFormatExtension(String formatName)
OracleResultSet rs_form = null;
try
conn = ConnectionDataObjectImpl.getConnection();
Statement stmt = conn.createStatement();
String sql_retrieve = "{call retrieveFormatExtension} " ;
CallableStatement cst = conn.prepareCall(
"{call retrieveFormatExtension(?,?)}");
cst.setString(1," FName ");
cst.registerOutParameter(1, OracleTypes.VARCHAR); // OUT Parameter
cst.executeQuery();
rs_form = (OracleResultSet) cst.getObject(1);
cst.close();
catch (SQLException ex)
System.out.println("SQLException : " + ex.getMessage());
return null;
Regards
Deepauk
[email protected]
null

Syntactically it looks fine. Only thing is u r calling the proc with wrong name. Your procedure takes only one parameter and i.e
IN type. I think u need to correct ur preparecall statement.
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Ayappa:
Hi,
I have a problem in calling the Stored proc using callable statement.It looks like we are doing the same thing or no..
Pl..let me know if you can correct me..Am enclosing the stored proc and java Code...
CREATE OR REPLACE PROCEDURE StoreFTPAddress (FTP in FTPTYPE) is
BEGIN
INSERT INTO DES.FTPSERVICE(
FTPID,
COMPANYID,
SERVERNAME,
DIRECTORY,
USERNAME,
PASSWORD,
INSTRUCTIONS)
VALUES( FTPID.NEXTVAL,
FTP.COMPANYID,
FTP.SERVERNAME,
FTP.DIRECTORY,
FTP.USERNAME,
FTP.PASSWORD,
FTP.INSTRUCTIONS);
END;
JAVA CODE :;
public String retrieveFormatExtension(String formatName)
OracleResultSet rs_form = null;
try
conn = ConnectionDataObjectImpl.getConnection();
Statement stmt = conn.createStatement();
String sql_retrieve = "{call retrieveFormatExtension} " ;
CallableStatement cst = conn.prepareCall(
"{call retrieveFormatExtension(?,?)}");
cst.setString(1," FName ");
cst.registerOutParameter(1, OracleTypes.VARCHAR); // OUT Parameter
cst.executeQuery();
rs_form = (OracleResultSet) cst.getObject(1);
cst.close();
catch (SQLException ex)
System.out.println("SQLException : " + ex.getMessage());
return null;
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Deepauk
[email protected]
<HR></BLOCKQUOTE>
null

Java function call from Trigger in Oracle

Moderator edit:
This post was branched from an eleven-year-old long dead thread
Java function call from Trigger in Oracle
@ user 861498,
For the future, if a forum discussion is more than (let's say) a month old, NEVER resurrect it to append your new issue. Always start a new thread. Feel free to include a link to that old discussion if you think it might be relevant.
Also, ALWAYS use code tags as is described in the forum FAQ that is linked at the upper corner of e\very page. Your formulae will be so very much more readable.
{end of edit, what follows is their posting}
I am attempting to do a similar function, however everything is loaded, written, compiled and resolved correct, however, nothing is happening. No errors or anything. Would I have a permission issue or something?
My code is the following, (the last four lines of java code is meant to do activate a particular badge which will later be dynamic)
Trigger:
CREATE OR REPLACE PROCEDURE java_contact_t4 (member_id_in NUMBER)
IS LANGUAGE JAVA
NAME 'ThrowAnError.contactTrigger(java.lang.Integer)';
Java:
CREATE OR REPLACE AND COMPILE JAVA SOURCE NAMED "ThrowAnError" AS
// Required class libraries.
import java.sql.*;
import oracle.jdbc.driver.*;
import com.ekahau.common.sdk.*;
import com.ekahau.engine.sdk.*;
// Define class.
public class ThrowAnError {
// Connect and verify new insert would be a duplicate.
public static void contactTrigger(Integer memberID) throws Exception {
String badgeId;
// Create a Java 5 and Oracle 11g connection.
Connection conn = DriverManager.getConnection("jdbc:default:connection:");
// Create a prepared statement that accepts binding a number.
PreparedStatement ps = conn.prepareStatement("SELECT \"Note\" " +
"FROM Users " +
"WHERE \"User\" = ? ");
// Bind the local variable to the statement placeholder.
ps.setInt(1, memberID);
// Execute query and check if there is a second value.
ResultSet rs = ps.executeQuery();
while (rs.next()) {
badgeId = rs.getString("Note");
// Clean up resources.
rs.close();
ps.close();
conn.close();
// davids badge is 105463705637
EConnection mEngineConnection = new econnection("10.25.10.5",8550);
mEngineConnection.setUserCredentials("choff", "badge00");
mEngineConnection.call("/epe/cfg/tagcommandadd?tagid=105463705637&cmd=mmt%203");
mEngineConnection.call("/epe/msg/tagsendmsg?tagid=105463705637&messagetype=instant&message=Hello%20World%20from%20Axium-Oracle");
Edited by: rukbat on May 31, 2011 1:12 PM

To followup on the posting:
Okay, being a oracle noob, I didn't know I needed to tell anything to get the java error messages out to the console
Having figured that out on my own, I minified my code to just run the one line of code:
// Required class libraries.
import java.sql.*;
import oracle.jdbc.driver.*;
import com.ekahau.common.sdk.*;
import com.ekahau.engine.sdk.*;
// Define class.
public class ThrowAnError {
     public static void testEkahau(Integer memberID) throws Exception {
     try {
          EConnection mEngineConnection = new EConnection("10.25.10.5",8550);
     } catch (Throwable e) {
          System.out.println("got an error");
          e.printStackTrace();
}So, after the following:
SQL> {as sysdba on another command prompt} exec dbms_java.grant_permission('AXIUM',"SYS:java.util.PropertyPermission','javax.security.auth.usersubjectCredsOnly','write');
and the following as the user
SQL> set serveroutput on
SQL> exec dbms_java.set_output(10000);
I run the procedure and receive the following message.
SQL> call java_contact_t4(801);
got an error
java.lang.NoClassDefFoundError
     at ThrowAnError.testEkahau(ThrowAnError:13)
Call completed.
NoClassDefFoundError tells me that it can't find the jar file to run my call to EConnection.
Now, I've notice when I loaded the sdk jar file, it skipped some classes it contained:
c:\Users\me\Documents>loadjava -r -f -v -r "axium/-----@axaxiumtrain" ekahau-engine-sdk.jar
arguments: '-u' 'axium/***@axaxiumtrain' '-r' '-f' '-v' 'ekahau-engine-sdk.jar'
creating : resource META-INF/MANIFEST.MF
loading : resource META-INF/MANIFEST.MF
creating : class com/ekahau/common/sdk/EConnection
loading : class com/ekahau/common/sdk/EConnection
creating : class com/ekahau/common/sdk/EErrorCodes
loading : class com/ekahau/common/sdk/EErrorCodes
skipping : resource META-INF/MANIFEST.MF
resolving: class com/ekahau/common/sdk/EConnection
skipping : class com/ekahau/common/sdk/EErrorCodes
skipping : class com/ekahau/common/sdk/EException
skipping : class com/ekahau/common/sdk/EMsg$EMSGIterator
skipping : class com/ekahau/common/sdk/EMsg
skipping : class com/ekahau/common/sdk/EMsgEncoder
skipping : class com/ekahau/common/sdk/EMsgKeyValueParser
skipping : class com/ekahau/common/sdk/EMsgProperty
resolving: class com/ekahau/engine/sdk/impl/LocationImpl
skipping : class com/ekahau/engine/sdk/status/IStatusListener
skipping : class com/ekahau/engine/sdk/status/StatusChangeEntry
Classes Loaded: 114
Resources Loaded: 1
Sources Loaded: 0
Published Interfaces: 0
Classes generated: 0
Classes skipped: 0
Synonyms Created: 0
Errors: 0
.... with no explanation.
Can anyone tell me why it would skip resolving a class? Especially after I use the -r flag to have loadjava resolve it upon loading.
How do i get it to resolve the entire jar file?
Edited by: themadprogrammer on Aug 5, 2011 7:15 AM
Edited by: themadprogrammer on Aug 5, 2011 7:21 AM
Edited by: themadprogrammer on Aug 5, 2011 7:22 AM
Edited by: themadprogrammer on Aug 5, 2011 7:23 AM
Edited by: themadprogrammer on Aug 5, 2011 7:26 AM

Java stored proc from proxy Java classes generated from a web service?

Hi gurus,
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FUNCTION get_plsql_table_A RETURN Ref_Cursor_t;
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AS LANGUAGE JAVA
NAME 'MyServer.getGoodIds() return java.lang.String';
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good_ids VARCHAR2(100);
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good_ids := get_good_ids();
OPEN table_cursor FOR 'SELECT id, name FROM TableA WHERE id IN ( ' | | good_ids | | ')';
RETURN table_cursor;
END;
END MyPackage;
public class MyServer{
public static String getGoodIds() throws SQLException {
return "1, 3, 6 ";
null

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We are getting this error while calling a stored procedure that invokes a
static function of a java class from inside Oracle 8.1.7.
ORA-29516: Aurora assertion failure: Java thread deadlock detected
ORA-06512: at "APPS.SERVICECONSUMERINVOKE", line 0
ORA-06512: at line 40
In a Toad SQL Window, when I execute the stored procedure that invokes the
java function, it executes successfully on the first attempt. When I try to
execute it again on the same SQL Window, it gives the above error. The java
class is part of a package and indirectly makes a JMS request-reply call
via other helper classes.
The same package works fine from other web containers and
unlike the Oracle JVM Aurora, the JVMs don't detect a deadlock.
Why does the Aurora throw an error?

Did you try issusing a commit and then trying again in Toad SQL Window?
The advice is to contact support:
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Cause: An internal error occurred in the Aurora module.
Action: Contact Oracle Worldwide Support.

Best place in VOimpl java code to call a stored proc to populate results

Hello all,
Using JDev 11g, ADF BC and Trinidad.
I am building an application that is primarily used for searching large amounts of data. We already have stored procedures on the database that perform the searches and dump the results into a holding table (together with a "search id"). I have easilly built a prototype of this application: my view object is simply "select a, b, c from results where search_id = :bv" - I have a service method in the AM that runs the stored procedure, obtains the search ID, binds it to the :bv in the VO and executes the VO's query - it's all working really nicely. Range paging is effective, the VO itself performs well, and I am able to control how long the stored proc runs via setting a timeout value.
Now, I'd like to generalize this. My thinking is this:
1). I'll add a custom property to my VO that is the SQL statement needed to call the stored procedure.
2). I'll add some bind variables to the VO to represent all the query parameters that can be passed to the stored proc. I'll also use custom properties to indicate these are "fake" bvs, and not in the SQL query itself.
3). The VO's SQL will remain simply "select a, b, c from results where search_id = :bv"
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Any thoughts from the BC experts out there?
Best regards,
John

John,
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And yes you analyzed the behavior correct. executeQueryForCollection() is allways called bevore getQueryHitCount().
Timo

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lets say in the PL/SQL block before the footer i pu
<schema>.my_procedure;
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PUBLIC.
Have you done that?
If yes then there is a problem.

Is there a way to call a stored proc from the web in Oracle 10g?

I've found an article about Native Oracle XML DB Web Services in 11g, but it appears to be a new feature. Is there any way of accomplishing something similar in 10g? I would like to be able to process XML documents that contain the name and parameters of the stored proc/function to execute.
Link to 11g article:
http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28369/xdb_web_services.htm

I agree with you. I was looking into mod_plsql, but it turns out that their development standards include not using Oracle HTTP server. The whole reason why they want to be able to execute a stored proc based on what is specified in an XML doc is that they want to avoid having to change their middle-tier configurations anytime a new stored proc or a change in stored proc parameters is made. I'm not familiar with what all is involved with .NET and the middle-tier, but supposedly this way, they can specify any stored procedure name and its parameters in an XML file. The XML is then suppose to be passed on to an Oracle stored procedure which will parse the XML and dynamically execute the stored procedure that was specified in the XML.
Here is an example of the XML:
'<Root>
<PackageName>TEST_PKG</PackageName>
<ProcedureName>TEST_PROC</ProcedureName>
    <Parameters>
    <Parameter>
        <Name>EmpID</Name>
        <Value>12345</Value>
    </Parameter>
    <Parameter>
        <Name>Org</Name>
        <Value>ABC</Value>
    </Parameter>
    </Parameters>
</Root>I basically need to parse out the pkg/proc names:
SELECT t.COLUMN_VALUE.extract('//PackageName/text()').getstringval() PkgName,
         t.COLUMN_VALUE.extract('//ProcedureName/text()').getstringval() ProcName
     INTO v_pkg_name, v_proc_name
     FROM TABLE(xmlsequence(XMLTYPE(v_XML_input) .extract('/Root'))) t;...and then execute the procedure:
    EXECUTE IMMEDIATE 'BEGIN '||v_pkg_name||'.'||v_proc_name||'(:a, :b, :c); END;'
      using in v_in_param1, v_in_param2, out v_XML_output;The problem is that this approach is very complicated since there can be any number of IN/OUT parameters and of various datatypes. I would have to create all kinds of possible bind variables!

Calling a storeed proc from jap

How do we call a stored procedure from a jsp?

And to do the call (either from the JSP, which I also don't recommend, or from somewhere else) use CallableStatement. Read the API documentation for more information on how to use it.
Alin.

Java class call from Stored Proc or trigger

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