Execute Oracle Java Stored Procedure in Pro*C

I found this is a very usefull example of calling Java procedure via Pro*C module. You could find the source and instructions at: http://www.oracle.com/technology/sample_code/tech/java/travel/travelschema.htm#user.
Some minor issues arose during installation of C/C++ environment. I use MS Visual Studio 6 and it works just fine. Also you have to be very observant when modifying "procCallJSP.bat" file where SETing environment variables.
I found some flaw in Pro*C "procCallJSP.pc" script. During the execution of "procCallJSP.exe", when you provide not numeric argumet at the command prompt (eg. ` ) it puts the program to infinite loop. It needs an additional check to eliminate such kind of typing. The change needs to applied at line # 142 in "procCallJSP.pc". Other then that it works OK.

<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by tomon Lee ([email protected]):
I try to call a stored procedure of oracle8i
in Pro*c using follow statement:
EXEC SQL EXCUTE
BEGIN
insert_date(sysdate,:out_timecode);
END;
END-EXEC;
but when i use "proc SQLCHECK=SEMANTICS test.pc" to compile it ,but it return an
error as follow:
"insert_date must be declared."
but the sample code above come from
oracle8i 8.1.6's documents.
what's wrong with me?<HR></BLOCKQUOTE>
If you have right to exec the insert_date ,Check the database connect set in your cfg file

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Please assist me for this...

hi Jignesh
Maybe you can find some useful information in:
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http://download-west.oracle.com/docs/cd/B14117_01/java.101/b12021.pdf
success
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Weblogic 6.1 & Oracle Java Stored Procedures

Hi all
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The following code:
import java.io.*;
public class CWoodTest {
public static String go(){
String result = null;
File file = null;
try{
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FileWriter fileWriter = new FileWriter( file );
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} catch( IOException e ){
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CREATE OR REPLACE PACKAGE CWoodTest AS
FUNCTION go
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show errors
And the result is "No Such File or Directory", even though the user oracle owns /data/oracle and the user I'm logged in as has JAVAUSERPRIV and JAVASYSPRIV . I am able to use UTL_FILE from PL/SQL to write to /data/oracle, so I know that init.ora has the correct UTL_FILE_DIR settings (if this matters). Similar Java code works fine on my desktop. Ideas?
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Did you grant execute rights on your FUNCTION go?
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Error while executing Java Stored Procedure.

Hi,
When I'm trying to execute my java stored procedure i'm getting the following error:
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Thanks in advance.
Uday

Hi Uday,
My guess is that there is a problem with your java stored procedure that is causing the "ExceptionInInitializer" error to be thrown. According to the javadoc:
is thrown to indicate that an exception occurred during
evaluation of a static initializer or
the initializer for a static variable
Since I didn't see any of your code in your post, I can't help you much more, I'm afraid. Perhaps if you would provide some more details, I may be able to help you some more. I think the following details would be helpful:
1. Complete error message and stack trace you are getting.
2. The section of your java code that you think is causing the problem.
3. Oracle database version you are using.
Good Luck,
Avi.

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(1) java program Test.java
public class Test {
public static void tst() {
(2) javac Test.java
(3) loadjava -user scott/tiger -oci8 -resolve -verbose Test.class
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AS LANGUAGE JAVA
NAME 'Test.tst()';
(5) test.sql
Begin
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tst();
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sqlplus scott/tiger
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I'll try to define it for the OP
Define: memory leakhttp://en.wikipedia.org/wiki/Memory_leak
Define: bestDoesn't really apply but wondered what wikipedia would return: http://en.wikipedia.org/wiki/Best
Define: testhttp://en.wikipedia.org/wiki/Software_testing

Jdbc and java stored procedures

Hi all,
I am new to Oracle Java Stored Procedures but I am interested in knowing to which extent is object passing supported.
Can I send any kind of object to a java stored procedure? And back from the procedure? Anybody knows any good resources online about Java Stored Procedures and JDBC?
I also saw that to pass the string back you need to specify java.lang.string, how would I do in order to pass back a user defined object, do I have to register the class in Oracle before (and if yes, how?)or is the classpath enough?
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Hi again,
perhaps I didn't understand exactly what you meant with "publish", AFAIK you have to expose the java class (i.e. RowCounter) by using
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AS LANGUAGE JAVA
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Thanks,
A.

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Hi,
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Good afternoon everyone
Our development team is looking for some assistance/validation of a design strategy we are deploying for a client. Let me first layout the environment and then the design issue at hand:
Business User Workstation component: Oracle SQL*Developer 1.5.x
Reporting Tool: Actuate e.Spreadsheet A10
Application Web UI: J2EE application developed with Eclipse
Application Scripting: Application has a scripting component whereby business users can write Oracle PL/SQL to perform many of the functions that are available in the Web UI, but can be batched up or repeated several times.
Application Server WebLogic 9.2.3 (client constraint)
Database Serve: Oracle 11g, Release 11.1.0.7
Lots of other stuff included but irrelevant for this conversation.
Here's the scenario in question:
1.     Through the scripting solution, the application user must use PL/SQL to invoke functionality within the Web UI. All PL/SQL that the application user creates does not contain any SQL. Instead our security model mandates that “pre-defined” routines will perform all of the SQL operations against the database; the application user simply invokes the stored procedures of functions to perform activities in the database.
2.     There is a component of the scripting application that facilitates the creation of reports. In our application, we are using Actuate’s e.Spreadsheet Engine to create the report and format the report based on a template. The template is provided as input, as well as other data items, into Actuate for processing. The net result is the report is created by the Actuate e.Spreadsheet engine in pdf format and then sent back to the user for distribution to other users in the company.
3.     The Actuate e.Spreadsheet engine consists of one or more JAR files within the Application Server framework. The Web UI utilizes these JAR files as well to perform report generation and data manipulation activities. In the case of the reporting functionality, the pdf report that is generated by Actuate is returned into either the Web UI or into the scripting component for persistence in the database. The mechanism exists to create multi-step jobs that can create multiple reports in one run.
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I can be contacted at (313) 227-4350 or at [email protected]
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So are you planning on loading the entire e.Spreadsheet engine into the database server's JVM?
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Error while executing java stored procedure from a pl/sql procedure

We have a requirement where we need to execute JAVA code stored in an Oracle database (Java Stored Procedure). This code uses some JAR files which we have already loaded without any errors in the database.
The class file was also loaded in the database without any errors. But when we execute the method of this class (JAVA code), it gives the following error:
ORA-29532: Java call terminated by uncaught Java exception:
java.lang.NoClassDefFoundError
Is there any way of debugging the code and getting to know where exactly the problem is? Or, any tool/software available for doing the same.
Any pointers would be of great help!
Thanks in advance

Hi Uday,
My guess is that there is a problem with your java stored procedure that is causing the "ExceptionInInitializer" error to be thrown. According to the javadoc:
is thrown to indicate that an exception occurred during
evaluation of a static initializer or
the initializer for a static variable
Since I didn't see any of your code in your post, I can't help you much more, I'm afraid. Perhaps if you would provide some more details, I may be able to help you some more. I think the following details would be helpful:
1. Complete error message and stack trace you are getting.
2. The section of your java code that you think is causing the problem.
3. Oracle database version you are using.
Good Luck,
Avi.

Executing batch file from Java stored procedure hang

Dears,
I'm using the following code to execute batch file from Java Stored procedure, which is working fine from Java IDE JDeveloper 10.1.3.4.
public static String runFile(String drive)
String result = "";
String content = "echo off\n" + "vol " + drive + ": | find /i \"Serial Number is\"";
try {
File directory = new File(drive + ":");
File file = File.createTempFile("bb1", ".bat", directory);
file.deleteOnExit();
FileWriter fw = new java.io.FileWriter(file);
fw.write(content);
fw.close();
// The next line is the command causing the problem
Process p = Runtime.getRuntime().exec("cmd.exe /c " + file.getPath());
BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line = input.readLine()) != null)
result += line;
input.close();
file.delete();
result = result.substring( result.lastIndexOf( ' ' )).trim();
} catch (Exception e) {
e.printStackTrace();
result = e.getClass().getName() + " : " + e.getMessage();
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The above code is used in getting the volume of a drive on windows, something like "80EC-C230"
I gave the SYSTEM schema the required privilege to execute the code.
EXEC DBMS_JAVA.grant_permission('SYSTEM', 'java.io.FilePermission', '<<ALL FILES>>', 'read ,write, execute, delete');
EXEC DBMS_JAVA.grant_permission('SYSTEM', 'SYS:java.lang.RuntimePermission', 'writeFileDescriptor', '');
EXEC DBMS_JAVA.grant_permission('SYSTEM', 'SYS:java.lang.RuntimePermission', 'readFileDescriptor', '');
GRANT JAVAUSERPRIV TO SYSTEM;
I have used the following to load the class in Oracle 9ir2 DB:
loadjava -u [system/******@orcl|mailto:system/******@orcl] -v -resolve C:\Server\src\net\dev\Util.java
CREATE FUNCTION A1(drive IN VARCHAR2) RETURN VARCHAR2 AS LANGUAGE JAVA NAME 'net.dev.Util.a1(java.lang.String) return java.lang.String';
variable serial1 varchar2(1000);
call A1( 'C' ) into :serial1;
The problem that it hangs when I execute the call to the function (I have indicated the line causing the problem in a comment in the code).
I have seen similar problems on other forums, but no solution posted
[http://oracle.ittoolbox.com/groups/technical-functional/oracle-jdeveloper-l/run-an-exe-file-using-oracle-database-trigger-1567662]
I have posted this in JDeveloper forum ([t-853821]) but suggested to post for forum in DB.
Can anyne help?

Dear Peter,
You are totally right, I got this as mistake copy paste. I'm just having a Java utility for running external files outside Oracle DB, this is the method runFile()
I'm passing it the content of script and names of file to be created on the fly and executed then deleted, sorry for the mistake in creating caller function.
The main point, how I claim that the line in code where creating external process is the problem. I have tried the code with commenting this line and it was working ok, I made this to make sure of the permission required that I need to give to the schema passing security permission problems.
The function script is running perfect if I'm executing vbs script outside Oracle using something like "cscript //NoLogo aaa1.vbs", but when I use the command line the call just never returns to me "cmd.exe /c bb1.bat".
where content of bb1.bat as follows:
echo off
vol C: | find /i "Serial Number is"
The above batch file just get the serial number of hard drive assigned when windows formatted HD.
Same code runs outside Oracle just fine, but inside Oracle doesn't return if I exectued the following:
variable serial1 varchar2(1000);
call A1( 'C' ) into :serial1;
Never returns
Thanks for tracing teh issue to that details ;) hope you coul help.

Java Stored Procedure in EXECUTE IMMEDIATE

Hi,
I need advice for the following.
I'm on Oracle 11g R2. I'm testing application in Oracle 11gR1 and R2 and Oracle Express.
Purpose is to generate XML reports.
I have PLSQL Stored Procedure which does that, but since there is bug in Oracle11gR2 related to XMLTRANSFORM I have and Java Stored Procedure which is workaround. They are both compiled, valid etc.
Java class is :
import java.io.PrintWriter;
import java.io.Writer;
import oracle.xml.parser.v2.DOMParser;
import oracle.xml.parser.v2.XMLDocument;
import oracle.xml.parser.v2.XSLProcessor;
import oracle.xml.parser.v2.XSLStylesheet;
* This class is used as Java stored procedure
* There is a bug on Oracle11gR2, related to the limitation on the number of style sheet instructions
* This stored procedure is workaround when PLSQL code can not be used.
* File must not have package, otherwise is wrongly compiled in DB
public class JavaXslt {
     public static void XMLTtransform(oracle.sql.CLOB xmlInput,oracle.sql.CLOB xslInput,oracle.sql.CLOB output) throws Exception{
          DOMParser parser;
          XMLDocument xml;
          XMLDocument xsldoc;
          try{
               parser = new DOMParser();
               parser.parse(xmlInput.getCharacterStream());
               xml = parser.getDocument();
               parser.parse(xslInput.getCharacterStream());
               xsldoc = parser.getDocument();
               XSLProcessor processor = new XSLProcessor();
               XSLStylesheet xsl = processor.newXSLStylesheet(xsldoc);
               Writer w = output.setCharacterStream(1L);
               PrintWriter pw = new PrintWriter(w);
               processor.processXSL(xsl, xml, pw);
          }catch (Exception ex){
               throw ex;
PROCEDURE Java_XmlTransform (xml CLOB, xslt CLOB, output CLOB) AS LANGUAGE JAVA
NAME 'JavaXslt.XMLTtransform(oracle.sql.CLOB, oracle.sql.CLOB, oracle.sql.CLOB)';
I'm calling Java stored procedure from PLSQL Stored procedure (if it is Oracle11gR2) like that :
Java_Proc.Java_XmlTransform(inputXML, xslt, res);
So till here everything works ok. XSLT as applied and output XML (res) is OK.
But when Oracle Express is used Java is out of the question, so there is no Java stored procedure. Howewer PLSQL Stored procedure is still needed.
So I had to put call to Java Stored procedure in EXECUTE IMMEDIATE statement in order to compile to PLSQL package.
But when I do that :
EXECUTE IMMEDIATE 'BEGIN Java_Proc.Java_XmlTransform (:1, :2, :3); END;' USING inputXML, xslt, res;
result value CLOB (res) has zero length...
What am I missing? Should i set return value to Java class?
Hope my explanations are clear though.
Thanks

Hi odie_63,
Thanks for quick response.
I didn't clearly explained.
When using Oracle 11gR1 and Oracle Express I'm using only PLSQL Procedure.
When using Oracle 11gR2 i have to use Java Stored procedure because there is documented bug in R2.
That's why i have to use EXECUTE IMMEDIATE. I don't know which version is the client DB and whether there is or no Java procedures.
I did tried
EXECUTE IMMEDIATE 'BEGIN Java_Proc.Java_XmlTransform (:1, :2, :3); END;' USING IN inputXML, IN xslt, OUT res; and the result was ORA-06537: OUT bind variable bound to an IN position
When using IN OUT for last parameter i.e.
EXECUTE IMMEDIATE 'BEGIN Java_Proc.Java_XmlTransform (:1, :2, :3); END;' USING IN inputXML, IN xslt, IN OUT res;
there is no exception, but still DBMS_LOB.getlength(res) = 0
Thanks

[b]Java Stored Procedure generating ora-932 in Oracle 9i [/b]

Hi ,
I have written a Java Stored procedure. And I have written a wrapper function as bellow
FUNCTION "GENERATE_AC_EXCEL_REPORT_FN"
( refCursorCall VARCHAR2, fromDate Date, ToDate Date,
nsn VARCHAR2, period varchar2, site VARCHAR2,
vendor VARCHAR2, spotbuyType VARCHAR2, dataType, VARCHAR2 )
return number
as LANGUAGE java
NAME 'accountingExcelReports.excelPrinter( java.lang.String, java.sql.Date, java.sql.Date, java.lang.String,java.lang.String , java.lang.String,
java.lang.String, java.lang.String , java.lang.String) return int';
This function returns 1000 upon successful execution.
This used to execute fine in Oracle 8.1.7.
We installed Oracle 9i recently.
Server version is 9.2.0.2.1.
Jserver version is 9.2.0.2.0 .
Now The function call works fine for the first time. And When execute it for sencond time in the same Session,
The program is erring out saying inconsistent data typpes.
This is happening during passing parameters.
SQL> select
2 generate_ac_EXCEL_report_fn('Period', to_date('7-1-2002','MM-DD-YYYY'),
3 to_date('7-31-2002','MM-DD-YYYY'), NULL,
4 NULL, NULL, NULL, 'ALL' ,'SPOTBUY') from dual;
GENERATE_AC_EXCEL_REPORT_FN('PERIOD',TO_DATE('7-1-2002','MM-DD-YYYY'),TO_DATE('7-31-2002','MM-DD-YYY
1000
SQL> select
2 generate_ac_EXCEL_report_fn('Period', to_date('7-1-2002','MM-DD-YYYY'),
3 to_date('7-31-2002','MM-DD-YYYY'), NULL,
4 NULL, NULL, NULL, 'ALL' ,'SPOTBUY') from dual;
select
ERROR at line 1:
ORA-00932: inconsistent datatypes: expected IN Conversion failed
And upon further testing, i noticed this happens when the dates are passed. If date parameters are nulled out, Then the program executes perfectly any number of times.
The same program worked fine in Oracle 8.1.6
Any ideas?
Please help.
Thanks,
Srinivas

Hi Srinivas,
you shouldn't be calling conn.close() and its not needed when using Server Side Internal driver. If you are calling conn.close, then .....
extract from JDBC user guide
If you do call the close() method, be aware of the following:
All connection instances obtained through the defaultConnection() method, which actually all reference the same connection object, will be closed and
unavailable for further use, with state and resource cleanup as appropriate. Executing defaultConnection() afterward would result in a new connection
object.
Even though the connection object is closed, the implicit connection to the database will not be closed.
http://otn.oracle.com/docs/products/oracle9i/doc_library/release2/java.920/a96654/advanc.htm#1001042
Elango.

URGENT: Java stored procedure on oracle 92 database is not working

Hi,
I am having an issue regarding java stored procedures. I have created a java class that uses the bouncycastleprovider ( bcprov-jdk13-141.jar ) to encrypt strings. I tested against the version of the java virtual machine that comes bundled with oracle and it works perfectly. I then used JDeveloper to load the class on the database with the resolve, noverify and order flags checked and it shows no errors but when I try to execute the stored procedure it throws the following exception:
java.lang.ExceptionInInitializerError:
java.lang.SecurityException: Cannot set up certs for trusted CAs: java.net.MalformedURLException: no protocol: US_export_policy.jar
at javax.crypto.SunJCE_b.<clinit>(DashoA6275)
at javax.crypto.Cipher.a(DashoA6275)
at javax.crypto.Cipher.getInstance(DashoA6275)
at RijndaelEnhanced.encrypt(RijndaelEnhanced.java:57)
at RijndaelEnhanced.encrypt(RijndaelEnhanced.java:73)
I loaded jce1_2_2.jar, sunjce_provider.jar, bcprov-jdk13-141.jar. Also replaced the US_export_policy.jar, local_policy.jar with the unrestrictive version. I add the security provider dinamically with a call to Security.insertProviderAt(new org.bouncycastle.jce.provider.BouncyCastleProvider(), 2);
I also did a select on the user_objects table and all the classes are in VALID status.
When I run my application using the java virtual machine that is located under C:\Oracle\oracli9i\jdk\jre\bin directory it works fine but when I try to execute on the database it won't work. I found a bug that was if the jce1_2_1.jar file existed in the C:\Oracle\oracli9i\jdk\jre\lib\ext directory ( even if it's extension is renamed ) it won't work because the certification file had expired but I don't know if this has anything to do with this error.
Am I missing something?
Please I need an urgent solution to this problem.
Thanks in advance.
Bruno Oliveira

SomeoneElse wrote:
Waaaaahhhhhhh!I was just thinking the same thing.... ya beat me to it...
To the OP:
As an up and coming DB Developer who now works for a small tech firm straight outta college, I can tell you for sure that you will definitely not get anywhere in your impatient life... look behind your back you miserable dude, your job might be in danger since ya got a bad attitude AND you can't figure out an error you are getting from a Java SP. So instead of helping you, I am going to simply tell you how you SHOULD act in a community of practice.
1. Be nice when looking for help
2. BE NICE WHEN LOOKING FOR HELP!!!
Pretty simple right?
Know what else is really simple? Looking at the topics of each board to make sure ya post in the right board! You people disgust me; somehow getting by in your professional career acting the way you do. I sure hope your "online" persona isn't a reflection of your real attitude towards people, almost pathetic and extremely immature.
Sorry bout the rant, it is Friday, I know :) Didn't get my coffee this morning. Have a good one all!
-Tim

While executing java stored procedure i got an error

I have used this command to load java source into data base
loadjava -user ENCORA/ENCORA C:\framework\Packages\testdevelopement\HOST.java
but while executing i got an error.
SQL> create or replace function run_cmd(p_cmd in varchar2) return number
2 as
3 language java
4 name 'HOST.RunThis(java.lang.String[]) return integer';
5 /
Function created.
SQL> create or replace procedure RC(p_cmd in varchar2)
2 as
3 x number;
4 begin
5 x := run_cmd(p_cmd);
6 end;
7 /
Procedure created.
SQL> set serveroutput on size 1000000
SQL> exec dbms_java.set_output(1000000)
PL/SQL procedure successfully completed.
SQL> exec rc('/usr/bin/ps -ef');
BEGIN rc('/usr/bin/ps -ef'); END;
ERROR at line 1:
ORA-29540: class HOST does not exist
ORA-06512: at "ENCORA.RUN_CMD", line 0
ORA-06512: at "ENCORA.RC", line 5
ORA-06512: at line 1
can any one suggest me how can i resolve this problem?

Hi Uday,
My guess is that there is a problem with your java stored procedure that is causing the "ExceptionInInitializer" error to be thrown. According to the javadoc:
is thrown to indicate that an exception occurred during
evaluation of a static initializer or
the initializer for a static variable
Since I didn't see any of your code in your post, I can't help you much more, I'm afraid. Perhaps if you would provide some more details, I may be able to help you some more. I think the following details would be helpful:
1. Complete error message and stack trace you are getting.
2. The section of your java code that you think is causing the problem.
3. Oracle database version you are using.
Good Luck,
Avi.

Execute Oracle Java Stored Procedure in Pro*C

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