Passing a structure from Java to PL/SQL Procedure

Environment: Oracle DB, Tomcat/Apache
How do we pass a structure (Table Record Type) from Java to a PL/SQL Stored Procedure?
We are doing JSP-->JavaClass/Bean to communicate to DB. We have an existing PL/SQL packages/Procedure to insert records into table (These procedures have record types as in/out parameters). So is there a way to call these from Java?
Thanks in advance.
Ramesh

Oracle9 i JDBC Developers Guide and Reference(page 21-16):
It is not feasible for Oracle JDBC drivers to support calling arguments or return
values of the PL/SQL RECORD, BOOLEAN, or table with non-scalar element types.
However, Oracle JDBC drivers support PL/SQL index-by table of scalar element
types. For a complete description of this, see "Accessing PL/SQL Index-by Tables"
on page 16-21.
As a workaround to PL/SQL RECORD, BOOLEAN, or non-scalar table types, create
wrapper procedures that handle the data as types supported by JDBC. For example,
to wrap a stored procedure that uses PL/SQL booleans, create a stored procedure
that takes a character or number from JDBC and passes it to the original procedure
as BOOLEAN or, for an output parameter, accepts a BOOLEAN argument from the
original procedure and passes it as a CHAR or NUMBER to JDBC. Similarly, to wrap a
stored procedure that uses PL/SQL records, create a stored procedure that handles
a record in its individual components (such as CHAR and NUMBER) or in a structured
object type. To wrap a stored procedure that uses PL/SQL tables, break the data
into components or perhaps use Oracle collection types.

Similar Messages

Passisng array from Java into PL/SQL procedure

Hi everybody!
I have type created with :
CREATE OR REPLACE TYPE my_type IS TABLE OF number;
Next I have procedure withinin a package which has parameters:
PROCEDURE my_proc
(p_Result OUT NUMBER,
p_Id table.column%TYPE,
p_MyType my_type
I call this procedure from Java :
import javax.sql.*;
import java.sql.*;
import oracle.jdbc.*;
import oracle.sql.ARRAY;
import oracle.sql.ArrayDescriptor;
public class MyClass extends QueryClient {
private int Id;
private int type;
private Integer[] List;
private int result;
public MyClass(int Id, eType type,
Integer[] List) throws SQLException {
this.Id = Id;
this.type = (type.equals(eType.TYPE_EXPORT) ? 1 : 0);
this.List = List;
this.execute("{call my_package.my_proc(?,?,?,?)}");
public void body(CallableStatement stmt) throws SQLException {
ArrayDescriptor descriptor = ArrayDescriptor.createDescriptor("MY_USER.MY_TYPE", getCon());
ARRAY array_to_pass = new ARRAY(descriptor, getCon(), this.List);
// register the type.
stmt.registerOutParameter(1, OracleTypes.NUMBER); // result of procedure calling
stmt.setInt(2, this.Id );
stmt.setInt(3, this.type);
stmt.setArray(4, array_to_pass);
// execute and retrieve the result set
stmt.execute();
this.result = stmt.getInt(1);
public int getResult() {
return result;
EVERYTHING WORKS FINE, BUT when I move type "my_type" into package header
TYPE my_type IS TABLE OF number;
I receive error after calling procedure
java.sql.SQLException: invalid name pattern: MY_USER.MY_TYPE
I dropped type my_type after moving it into package. So there is only one my_type, in the package.
User who call procedure is owner of the package.
So questions are:
1. Is it possible to have my_type within package without error?
2. Is it possible to describe my_type without having a connection to database? My aim is eliminate number of connections to database.
Thanks all.
Matus.

You can't use the packaged type for this. You need to use the original collection type (i.e. via the CREATE TYPE syntax) as you have discovered yourself.
Regards

Passing an array from Java to Pl/SQL Procdures

I am relatively new to the Java world and I am unable to pass back an array from Java back to the calling PL/SQL procedure. I have read many of the posts that deal with this issue and in specificly have viewed Ask Tom. My main issue is trying to get the data types matched up. I am able to return varchar2, numbers, and the like, but an array of filenames is not happening. I have tried a variety of "types" but unable to accomplish the task. Please help.
I have my Java class basically defined as:
public static oracle.sql.ARRAY[] getCollection(String directory)
throws SQLException
{ // provide a directory and get a listing of files
File path = new File( directory );
String[] list = path.list();
return list;
SQL Type and PL/SQL Procedure is:
CREATE OR REPLACE TYPE PTO_FILE IS TABLE OF VARCHAR2(100);
create or replace function get_dir_collection( p_directory in varchar2 ) RETURN PTO_FILE
as language java
name 'DirCollection.getCollection( java.lang.String ) return oracle.sql.ARRAY[]';
/

I know that it is not an ARRAY. It is however an "array" and I am attempting to map Java's String[][ to some "object" on the oracle side. I have looked at the link you sited and was not able to find the data mapping. I have found that mapping data types between different "languages" is some of the most difficult aspects of working with multiple languages.
Any suggestions? Thanks

How to Pass String array from Java to PL/SQL and this use in CURSOR

hi,
I cant understand how to pass Array String as Input Parameter to the Procedure and this array use in Cursor for where condition like where SYMPTOM in( ** Array String **).
This array containing like (SYMPTOM ) to be returned from the java to the
pl/sql (I am not querying the database to retrieve the information).
I cannot find an example on this. I will give the PL/SQL block
create or replace procedure DISEASE_DTL<*** String Array ***> as
v_SYMPTOM number(5);
CURSOR C1 is
select distinct a.DISEASE_NAME from SYMPTOM_DISEASE_RD a
where ltrim(rtrim(a.SYMPTOM)) in ('Fever','COUGH','Headache','Rash') ------- ***** Here use this array element(like n1,n2,n3,n4,n5..) ******
group by a.DISEASE_NAME having count(a.DISEASE_NAME) > 3 ----------- ***** 3 is no of array element - 1 (i.e( n - 1))*****
order by a.DISEASE_NAME ;
begin
for C1rec IN C1 loop
select count(distinct(A.SYMPTOM)) into v_SYMPTOM from SYMPTOM_DISEASE_RD a where A.DISEASE_NAME = C1rec.DISEASE_NAME;
insert into TEMP_DISEASE_DTLS_SYMPTOM_RD
values (SL_ID_SEQ.nextval,
C1rec.DISEASE_NAME,
(4/v_SYMPTOM), --------**** 4 is no of array element (n)************
(1-(4/v_SYMPTOM)));
end loop;
commit;
end DISEASE_DTL;
Please give the proper solution and step ..
Thanking you,
Asish

I've haven't properly read through your code but here's an artificial example based on a sql collection of object types - you don't need that, you just need a type table of varchar2 rather than a type table of oracle object type:
http://orastory.wordpress.com/2007/05/01/upscaling-your-jdbc-app/

Pass arrays from Java to PL/SQL procedure.

Hi All,
Can some body give an example, where an array of strings is passed from java to a PL/SQL procedure.
Any help in this regard is appreciated.
Thanks,
Prashant

Kiran Kumar Gunda wrote:
I would want to use Oracle provided (Oracle Extensions) API to pass arrays to PL/SQL
procedure from Java. I am using weblogic connection pool, but the 'createDescriptor'
method donot allow Pooled connection. So I have taken Physical Connection by casting
to 'WLConnection'. Now, weblogic strongly suggest NOT to use this,as pooling capabilities
will be disabled.
But by setting RemoveInfectedConnectionsEnabled to false, we can ask weblogic
to return the Physical Connection to Pool. I have tested this with the attached
code. I DON'T find any issue.Good. The only real risk to obtaining the physical connection is retaining and
using it beyond the current thread execution. Your code looks OK. The only thing
I'd suggest is to add to the finally block. I would put a separate try-catch-ignore
block around every action in the finally, so if one fails, the others are still
done.
As long as you're writing good JDBC like that, there is no risk to telling the
pool to trust the code, by setting RemoveInfectedConnectionsEnabled to false.
That way you'll retain all the performance of the pools.
Joe
>
I want your opinion in this, so that I will be confident in using this feature
in our application.
Note : Please look at the sample code that I am using. I AM NOT GOING TO USE PHYSICAL
CONNECTIONS for normal operations. I will use Physical Connection only when I
want to pass Arrays to Oracle.
Thanks
Kiran

Passing String Array from Java to PL/SQL

Hi,
We are having couple of packages which have been written in PL/SQL . I would like to know how i can send arrays as input parameters from Java to any stored proc in Oracle. I am having Oracle 8i as the DB and am using Websphere RSA for deployment purposes.
please find below Java , PL/SQL code and exception
PL/SQL Code :
PACKAGE PKG_SURCHARGE
IS
TYPE commodity_key IS TABLE OF VARCHAR2(500) INDEX BY BINARY_INTEGER;
PROCEDURE RETRIEVE_CHARGES
in_Commodity_tab IN commodity_key,
IS
BEGIN
dbms_output.put_line('in_Commodity_tab(' || '0' || ') : ' || in_Commodity_tab(0) );
Java Code :
CallableStatement cstmt=null;
Connection conn=null;
try{
conn=getConnection();
System.out.println("++++++connected");
String sqlStr = "{call Pkg_Surcharge.RETRIEVE_CHARGES(?) }";
cstmt = conn.prepareCall(sqlStr );
//1.
String[] javaArray={"20081117","20081117"};
ArrayDescriptor dateDescripter = ArrayDescriptor.createDescriptor( "commodity_key", conn );
oracle.sql.ARRAY dateArray = new oracle.sql.ARRAY(dateDescripter, conn, javaArray);
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Catch (Exception e){
e.printStackTrace();
Exception Occured:
java.sql.SQLException: Invalid Pattern Name <Schema Name>.commodity_key
Appreciate your help in this regard
Thanks
Srini
Edited by: [email protected] on Nov 25, 2008 4:55 AM

Avi is correct. You must create a varray or nested table instead of using a PL/SQL index-by table.
SQL> create type commodity_key as varray(#) of varchar2(500);
or
SQL> create type commodity_key as table of varchar2(500);
Use the varray if you know the number of items in the array. Otherwise, use the nested table.

Errer when, Call from java to pl sql procedure with table out parameter

Hi ,
Please help me ? It's urgent for me .....
My Oracle Code is like this ,
CREATE TABLE TEST_TABLE ( DATE1 DATE, VALUE_EXAMPLE VARCHAR2(20 BYTE), VALUE2_EXAMPLE VARCHAR2(20 BYTE), VALUE3_EXAMPLE NUMBER ); CREATE OR REPLACE TYPE TONERECORDTEST AS OBJECT ( DATE1 DATE, VALUE_EXAMPLE VARCHAR2(20), VALUE2_EXAMPLE VARCHAR2(20), VALUE3_EXAMPLE NUMBER ); CREATE OR REPLACE TYPE TTESTTABLE IS TABLE OF TONERECORDTEST; CREATE OR REPLACE PACKAGE test_collection_procedures AS PROCEDURE testCallProcedureFromJava(start_time IN DATE, end_time IN DATE, table_data OUT TTesttable); END test_collection_procedures; / CREATE OR REPLACE PACKAGE BODY test_collection_procedures AS PROCEDURE testCallProcedureFromJava(start_time IN DATE, end_time IN DATE, table_data OUT TTesttable) IS BEGIN SELECT TONERECORDTEST(date1, value_example, value2_example, value3_example) BULK COLLECT INTO table_data FROM TEST_TABLE WHERE DATE1>=start_time AND DATE1<=end_time; END testCallProcedureFromJava; END test_collection_procedures;
And my Java Code is like
import java.sql.Connection; import java.sql.DriverManager; import oracle.jdbc.OracleCallableStatement; import oracle.jdbc.OracleTypes; import oracle.sql.ARRAY; import oracle.sql.ArrayDescriptor; import oracle.sql.STRUCT; import oracle.sql.StructDescriptor; public class testPLCollectionType { public static void main(java.lang.String[] args) { try{ //Load the driver Class.forName ("oracle.jdbc.driver.OracleDriver"); // Connect to the database Connection conn = DriverManager.getConnection ("jdbc:oracle:thin:@serverbd:1521:squema1","user", "password"); // First, declare the Object arrays that will store the data (for TONERECORDTEST OBJECT TYPE) Object [] p2recobj; Object [] p3recobj; Object [] p4recobj; // Declare the Object Arrays to hold the STRUCTS (for TTESTTABLE TYPE) Object [] p2arrobj; // Declare two descriptors, one for the ARRAY TYPE // and one for the OBJECT TYPE. StructDescriptor desc1=StructDescriptor.createDescriptor("TONERECORDTEST",conn); ArrayDescriptor desc2=ArrayDescriptor.createDescriptor("TTESTTABLE",conn); // Set up the ARRAY object. ARRAY p2arr; // Declare the callable statement. // This must be of type OracleCallableStatement. OracleCallableStatement ocs = (OracleCallableStatement)conn.prepareCall("{call test_collection_procedures.testCallProcedureFromJa va(?,?,?)}"); // Declare IN parameters. Realize that are 2 DATE TYPE!!! Maybe your could change with setDATE ocs.setString(1,"01-JAN-04"); ocs.setString(2,"10-JAN-05"); // Register OUT parameter ocs.registerOutParameter(3,OracleTypes.ARRAY,"TTESTTABLE"); // Execute the procedure ocs.execute(); // Associate the returned arrays with the ARRAY objects. p2arr = ocs.getARRAY(3); // Get the data back into the data arrays. //p1arrobj = (Object [])p1arr.getArray(); p2arrobj = (Object [])p2arr.getArray(); System.out.println("Number of rows="+p2arrobj.length); System.out.println("Printing results..."); for (int i=0; i<p2arrobj.length; i++){ Object [] piarrobj = ((STRUCT)p2arrobj).getAttributes();
System.out.println();
System.out.print("Row "+i);
for (int j=0; j<4; j++){
System.out.print("|"+piarrobj[j]);
}catch (Exception ex){
System.out.println("Exception-->"+ex.getMessage());
Actually when i running the java program it is showing error
Exception-->ORA-06550: line 1, column 58:
PLS-00103: Encountered the symbol "VA" when expecting one of the following:
:= . ( @ % ;
The symbol ":=" was substituted for "VA" to continue.
I am not getting the error .Please help me out Dhabas Edited by: Dhabas on Jan 12, 2009 3:49 PM

// Declare the callable statement.
// This must be of type OracleCallableStatement.
..."{call test_collection_procedures.testCallProcedureFromJa va(?,?,?)}");Looks like Ja divorced va.

Passing Tables back from Java Stored Procedures

Thomas Kyte has written (in reference to
trying to pass an array back from a stored
function call):
You can do one of two things (and both require the use of
objects). You cannot use PLSQL table types as JDBC cannot bind to
this type -- we must use OBJECT Types.
[snip]
Another way is to use a result set and "select * from
plsql_function". It could look like this:
ops$tkyte@8i> create or replace type myTableType as table of
varchar2 (64);
2 /
Type created.
ops$tkyte@8i>
ops$tkyte@8i>
ops$tkyte@8i> create or replace
2 function demo_proc2( p_rows_to_make_up in number )
3 return myTableType
4 as
5 l_data myTableType := myTableType();
6 begin
7 for i in 1 .. p_rows_to_make_up
8 loop
9 l_data.extend;
10 l_data(i) := 'Made up row ' | | i;
11 end loop;
12 return l_data;
13 end;
14 /
Function created.
ops$tkyte@8i>
ops$tkyte@8i> select *
2 from the ( select cast( demo_proc2(5) as mytableType )
3 from dual );
COLUMN_VALUE
Made up row 1
Made up row 2
Made up row 3
Made up row 4 [Image]
Made up row 5
So, your JDBC program would just run the query to get the data.
If the function "demo_proc2" cannot be called from SQL for
whatever reason (eg: it calls an impure function in another piece
of code or it itself tries to modify the database via an insert
or whatever), you'll just make a package like:
ops$tkyte@8i> create or replace package my_pkg
2 as
3
4 procedure Make_up_the_data( p_rows_to_make_up in
number ); 5 function Get_The_Data return myTableType;
6 end;
7 /
Package created.
ops$tkyte@8i>
ops$tkyte@8i> create or replace package body my_pkg
2 as
3
4 g_data myTableType;
5
6 procedure Make_up_the_data( p_rows_to_make_up in number )
7 as
8 begin
9 g_data := myTableType();
10 for i in 1 .. p_rows_to_make_up
11 loop
12 g_data.extend;
13 g_data(i) := 'Made up row ' | | i;
14 end loop;
15 end;
16
17
18 function get_the_data return myTableType
19 is
20 begin
21 return g_data;
22 end;
23
24 end;
25 /
Package body created.
ops$tkyte@8i>
ops$tkyte@8i> exec my_pkg.make_up_the_data( 3 );
PL/SQL procedure successfully completed.
ops$tkyte@8i>
ops$tkyte@8i> select *
2 from the ( select cast( my_pkg.get_the_data as mytableType
) 3 from dual );
COLUMN_VALUE
Made up row 1
Made up row 2
Made up row 3
And you'll call the procedure followed by a query to get the
data...
I have tried this, and it works perfectly.
My question, is what does the wrapper look
like if the stored function is written
in java instead of PL/SQL? My experiments
with putting the function in java have been
dismal failures. (I supposed I should also
ask how the java stored procedure might
look also, as I suppose that could be where
I have been having a problem)
null

Thanks for the response Avi, but I think I need to clarify my question. The articles referenced in your link tended to describe using PL/SQL ref cursors in Java stored procedures and also the desire to pass ref cursors from Java to PL/SQL programs. Unfortunately, what I am looking to do is the opposite.
We currently have several Java stored procedures that are accessed via select statements that have become a performance bottleneck in our system. Originally the business requirements were such that only a small number of rows were ever selected and passed into the Java stored procedures. Well, business requirements have changed and now thousands and potentially tens of thousands of rows can be passed in. We benchmarked Java stored procedures vs. PL/SQL stored procedures being accessed via a select statement and PL/SQL had far better performance and scaleable. So, our thought is by decouple the persistence logic into PL/SQL and keeping the business logic in Java stored procedures we can increase performance without having to do a major rewrite of the existing code. This leads to the current problem.
What we currently do is select into a Java stored procedure which has many database access calls. What we would like to do is select against a PL/SQL stored procedure to aggregate the data and then pass that data via a ref cursor (or whatever structure is acceptable) to a Java stored procedure. This would save us a significant amount of work since the current Java stored procedures would simple need to be changed to not make database calls since the data would be handed to them.
Is there a way to send a ref cursor from PL/SQL as an input parameter to a Java stored procedure? My call would potentially look like this:
SELECT java_stored_proc(pl/sql_stored_proc(col_id))
FROM table_of_5000_rows;
Sorry for the lengthy post.

Is it possible to pass blob from java to PL/SQL ?

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A: Is it possible to pass blob from java to PL/SQL ?

Thank you, but I think I have a Java problem...
Here is my code :
package zip;
import java.sql.*;
import oracle.jdbc.OracleDriver;
import oracle.sql.BLOB;
public class ReadBLOB {
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Example of passing String Array from java to C using JNI

hi all
i searched net for passing string array from java to C but i dont get anything relevent
i have
class stu
int rollno
string name
String [] sub
i want to pass all as String array from java to C and access it C side

1. Code it as though it were being passed to another method written in java.
2. Redefine the method implementation to say "native".
3. Run jnih to generate a C ".h" file. You will see that the string array
is passed into C as a jobject, which can be cast to a JNI array.
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in the generated .h file.

Passing (byref) String from Java to C++ via JNI

I wish to pass a string to a C++ Dll as a parameter in a function. The problem is that I don't know howto receive back the data after it is filled in the C++ dll. I am trying to do what is called passing parameters by reference.
Java Code:
public class ABKeyBoard {
public native long leerBanda(int pista, String datos);
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String datos=new String();
System.loadLibrary("ABKeyBoard");
new ABKeyBoard().leerBanda(1,datos);
System.out.println(datos); //the content of datos here is empty.
C++ Code:
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In java every parameter are always passed by value.
The datos parameter is a local copy of the string
reference you pass to the method.This is wrong. The String passed to the native method is the same String object you use in Java. Although everything is passed by value in Java, what is actually passed by value is the reference to the String. This means that you can modify the object you pass, but you are not allowed to change the reference to point to a totally different object. That is where the problem is coming in.
The trouble is that it is illegal to modify a String, even from native code. If you need to make changes in-place to the text, pass an array of chars (if your native code uses Unicode), an array of bytes (if it uses normal 8-bit characters) or a StringBuffer. You can legally modify any of these data structures with the new data. But the StringBuffer object is the only one whose length can be changed after it is created. Unfortunately it is also the hardest to use from JNI.
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Preferred Uses of Structure from Java Dictionary

Hello Friends ,
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Hi,
Java Dictionary can be used as a central repository for cross-platform definitions of data types and database objects.
Data type descriptions in the form of structures are used in Web applications and can be created in the Java Dictionary independently of the program code. Structures created in the Java Dictionary can be reused in different Web Dynpro contexts.
This useful document link: https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/00c062ec-f90d-2a10-52bd-df57de2d1ddb
Regards,
Anagha

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Lokanath

Hi,
why not using External tables. Then you can in Oracle work it out by just using it as a normal table with all the profits.
Herald ten Dam
http://htendam.wordpress.com

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SOLVED THE PROBLEM!!!

Passing a structure from Java to PL/SQL Procedure

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