Problem using REF CURSOR in JDBC

i have several stored procedures and functions that return REF CURSOR object as output. however, i'm noticing that if
no rows are returned within the cursor, the JDBC driver is throwing a "No more data to read from socket" exception.
i'm using the Oracle Thin JDBC driver v8.1.6 for JDK 1.2.
any help is appreciated.
thanks,
gary
null

I am not able to reproduce the problem. Could you post a testcase so that we can follow it up?
Thanks.

Similar Messages

Using REF CURSOR from JDBC?

How do I use a REF CURSOR OUT parameter present in a Stored Procedure from my JDBC program?

here is an example, calling a packaged function. 1st param is delared as IN OUT REF CURSOR.
CallableStatement cs = conn.prepareCall("{? = call myPackage.myFunc(?,?)}");
cs.registerOutParameter (1, OracleTypes.INTEGER);
cs.registerOutParameter (2, OracleTypes.CURSOR);
cs.setInt(3,mInt.intValue());
boolean boolValue = cs.execute();
ResultSet cursor = ((OracleCallableStatement)cs).getCursor (2);
i hope this helps.
null

Problem in using ref cursor

I have a procedure which is using one ref cursor as OUT paramater. Now when I call this procedure, it gives me the following error:
ORA-00932: inconsistent datatypes: expected CURSER got NUMBER
ORA-06512: at "APPS.ORDER_RETURN1", line 8
ORA-06512: at "APPS.ORDER_RETURN2", line 4
ORA-06512: at line 1
Below is my code
PROCEDURE ORDER_RETURN1(p_order OUT sys_refcursor) IS
TYPE OE_ORDER_rcur IS REF CURSOR;
rcur OE_ORDER_rcur;
BEGIN
OPEN rcur FOR
SELECT ORDER_NUMBER FROM OE_ORDER_HEADERS_ALL WHERE ROWNUM < 4;
FETCH rcur INTO p_order;
CLOSE rcur;
END ORDER_RETURN1;
PROCEDURE ORDER_RETURN2 IS
OE_ORDER_rcur11 sys_refcursor;
BEGIN
ORDER_RETURN1(OE_ORDER_rcur11);
end;
I tried to call proc ORDER_RETURN1 with the help of proc ORDER_RETURN2, but no change, it gives me same error if i call the first proc ORDER_RETURN1 or i call ORDER_RETURN2.
I am stuck with this problem, I had used ref cursor in procedure but not able to call the procedure which uses ref cursor as OUT parameter.
Please help me to resolve this.
Thanks
Nidhi..

Check out this
SQL>VARIABLE X REFCURSOR
SQL>CREATE OR REPLACE PROCEDURE ORDER_RETURN1(p_order OUT sys_refcursor) IS
2 BEGIN
3 OPEN p_order FOR
4 SELECT OBJECT_ID FROM ALL_OBJECTS WHERE ROWNUM < 4;
5 END ORDER_RETURN1;
6 /
Procedure created.
SQL>EXEC ORDER_RETURN1(:X)
PL/SQL procedure successfully completed.
SQL>PRINT X
OBJECT_ID
         4
        39
        30
SQL>Regards
Arun

Cursors are not closed when using Ref Cursor Query in a report ORA-01000

Dear Experts
Oracel database 11g,
developer suite 10.1.2.0.2,
application server 10.1.2.0.2,
Windows xp platform
For a long time, I'm hitting ORA-01000
I have a 2 group report (master and detail) using Ref Cusor query, when this report is run, I found that it opens several cursors (should be only one cursor) for the detail query although it should not, I found that the number of these cursors is equal to the number of master records.
Moreover, after the report is finished, these cursors are not closed, and they are increasing cumulatively each time I run the report, and finally the maximum number of open cursors is exceeded, and thus I get ORA-01000.
I increased the open cursors parameter for the database to an unbeleivable value 30000, but of course it will be exceeded during the session because the cursors are increasing cumulatively.
I Found that this problem is solved when using only one master Ref Cursor Query and create a breake group, the problem is solved also if we use SQL Query instead of Ref Query for the master and detail queries, but for some considerations, I should not use neither breake group nor SQL Query, I have to use REF Cursor queries.
Is this an oracle bug , and how can I overcome ?
Thanks
Edited by: Mostafa Abolaynain on May 6, 2012 9:58 AM

Thank you Inol for your answer, However
Ref Cursor give me felxibility to control the query, for example see the following query :
function QR_1RefCurDS return DEF_CURSORS.JOURHEAD_REFCUR is
temp_JOURHEAD DEF_CURSORS.JOURHEAD_refcur;
          v_from_date DATE;
          v_to_date DATE;
          V_SERIAL_TYPE number;
begin
SELECT SERIAL_TYPE INTO V_SERIAL_TYPE
FROM ACC_VOUCHER_TYPES
where voucher_type='J'
and IDENT_NO=:IDENT
AND COMP_NO=TO_NUMBER(:COMPANY_NO);
     IF :no_date=1 then
               IF V_SERIAL_TYPE =1 THEN
               open temp_JOURHEAD for select VOCH_NO, VOCH_DATE
               FROM JOURHEAD
               WHERE COMP_NO=TO_NUMBER(:COMPANY_NO)
               AND IDENT=:IDENT
          AND ((TO_NUMBER(VOCH_NO)=:FROM_NO and :FROM_NO IS NOT NULL AND :TO_NO IS NULL)
          OR (TO_NUMBER(VOCH_NO) BETWEEN :FROM_NO AND :TO_NO and :FROM_NO IS NOT NULL AND :TO_NO IS NOT NULL )
          OR (TO_NUMBER(VOCH_NO)<=:TO_NO and :FROM_NO IS NULL AND :TO_NO IS NOT NULL )
          OR (:FROM_NO IS NULL AND :TO_NO IS NULL ))
               ORDER BY TO_NUMBER(VOCH_NO);
               ELSE
               open temp_JOURHEAD for select VOCH_NO, VOCH_DATE
               FROM JOURHEAD
               WHERE COMP_NO=TO_NUMBER(:COMPANY_NO)
               AND IDENT=:IDENT
          AND ((VOCH_NO=:FROM_NO and :FROM_NO IS NOT NULL AND :TO_NO IS NULL)
          OR (VOCH_NO BETWEEN :FROM_NO AND :TO_NO and :FROM_NO IS NOT NULL AND :TO_NO IS NOT NULL )
          OR (VOCH_NO<=:TO_NO and :FROM_NO IS NULL AND :TO_NO IS NOT NULL )
          OR (:FROM_NO IS NULL AND :TO_NO IS NULL ))
               ORDER BY VOCH_NO;
               END IF;
     ELSE
               v_from_date:=to_DATE(:from_date);
               v_to_date:=to_DATE(:to_date);
          IF V_SERIAL_TYPE =1 THEN
               open temp_JOURHEAD for select VOCH_NO, VOCH_DATE
               FROM JOURHEAD
               WHERE COMP_NO=TO_NUMBER(:COMPANY_NO)
          AND IDENT=:IDENT
               AND ((voch_date between v_from_date and v_to_date and :from_date is not null and :to_date is not null)
               OR (voch_date <= v_to_date and :from_date is null and :to_date is not null)
               OR (voch_date = v_from_date and :from_date is not null and :to_date is null)
               OR (:from_date is null and :to_date is null ))
               ORDER BY VOCH_DATE,TO_NUMBER(VOCH_NO);
          ELSE
               open temp_JOURHEAD for select VOCH_NO, VOCH_DATE
               FROM JOURHEAD
               WHERE COMP_NO=TO_NUMBER(:COMPANY_NO)
               AND IDENT=:IDENT
          AND ((voch_date between v_from_date and v_to_date and :from_date is not null and :to_date is not null)
               OR (voch_date <= v_to_date and :from_date is null and :to_date is not null)
               OR (voch_date = v_from_date and :from_date is not null and :to_date is null)
               OR (:from_date is null and :to_date is null ))
               ORDER BY VOCH_DATE,VOCH_NO;
          END IF;
     END IF;
     return temp_JOURHEAD;
end;

Using ref cursor in after parameter form in reports

hi everyone,
I have problem in usage of ref cursor in after parameter form. My actual requirement is I have user parameter :p_minval, :p_maxval. The values into these user parameters will be coming dynamically using sql_statement as shown below
select min(empid),max(empid) into :p_minval, :p_maxval from emp where empid in (:p_emp);
I will be writing this query in the after parameter form
:p_emp is a lexical parameter as per me but the after parameter form is taking it as a bind variable. so I decided to define a ref cursor and then use it for retrieve. But when I use ref cursor it is returning pl/sql error 591 saying that this is not supported by client side can anyone help me plz..
The following is the code i tried to use in after parameter form
function afterPform return boolean is
type rc is ref cursor;
l_rc rc;
sqlstmt varchar2(512);
begin
sqlstmt:='select min(empid),max(empid) from emp where empid in ('||:p_emp||')';
open l_rc for
select max(empid) from emp where empid in ('||:p_emp||')';
fetch l_rc into :p_maxval;
close l_rc;
return(true);
end;
thanks & regards
venkat

I ran into the same problem. any body knows why?

Report using ref cursor or dynamic Sql

Hi,
I never create a report using a ref cursor or a dynamic sql. Could any one help me to solve the below issue.
I have 2 tables.
1. Student_Record
2. Student_csv_help
Student_Record the main table where the data is stored.
Student_csv_help will contain the all the column names of the Student_record.
CREATE TABLE Student_CSV_HELP
ENTRY_ID NUMBER,
RAW_NAME VARCHAR2(40 BYTE),
DESC_NAME VARCHAR2(1000 BYTE),
IN_OUTPUT_LIST VARCHAR2(1 BYTE)
SET DEFINE OFF;
Insert into TOA_CSV_HELP
(ENTRY_ID, RAW_NAME, DESC_NAME, IN_OUTPUT_LIST)
Values
(1, 'S_ID', 'Student ID', 'Y');
Insert into TOA_CSV_HELP
(ENTRY_ID, RAW_NAME, DESC_NAME, IN_OUTPUT_LIST)
Values
(2, 'S_Name', 'Student Name', 'Y');
Insert into TOA_CSV_HELP
(ENTRY_ID, RAW_NAME, DESC_NAME, IN_OUTPUT_LIST)
Values
(3, 'S_Join_date', 'Joining Date', 'Y');
Insert into TOA_CSV_HELP
(ENTRY_ID, RAW_NAME, DESC_NAME, IN_OUTPUT_LIST)
Values
(4, 'S_Address', 'Address', 'Y');
Insert into TOA_CSV_HELP
(ENTRY_ID, RAW_NAME, DESC_NAME, IN_OUTPUT_LIST)
Values
(5, 'S_Fee', 'Tution Fee', 'N');
commit;
CREATE TABLE Student_record
S_ID NUMBER,
S_Name VARCHAR2(100 BYTE),
S_Join_date date,
S_Address VARCHAR2(360 BYTE),
S_Fee Number
Insert into Student_record
(S_ID, S_Name, S_Join_date, S_Address,S_Fee)
Values
(101, 'john', TO_DATE('12/17/2009 08:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'CA-94777', 2000);
Insert into Student_record
(S_ID, S_Name, S_Join_date, S_Address,S_Fee)
Values
(102, 'arif', TO_DATE('12/18/2009 08:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'CA-94444', 3000);
Insert into Student_record
(S_ID, S_Name, S_Join_date, S_Address,S_Fee)
Values
(103, 'raj', TO_DATE('12/19/2009 08:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'CA-94555', 2500);
Insert into Student_record
(S_ID, S_Name, S_Join_date, S_Address,S_Fee)
Values
(104, 'singh', TO_DATE('12/20/2009 08:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'CA-94666', 2000);
Commit;
Now my requirement is:
I have a form with Student_record data block. When i Click on print Button on this form. It will open another window which has Student_CSV_HELP.DESC_NAME and a check box before this.
The window look like as below:
check_box       DESC_NAME+
X                   S_ID+
--                   S_Name+
X                   S_Join_date+
X                   S_Address+
--                  S_Fee+
X means check box checked.+
-- means check box Unchecked.+
After i selected these check boxes i will send 2 parameters to the report server
1. a string parameter to the report server which has the value 'S_ID,S_Join_date,S_Address' (p_column_name := 'S_ID,S_Join_date,S_Address');
2. the s_id value from the student_record block (p_S_id := '101');
Now my requirement is when i click on run. I need a report like as below:
Student ID : 101+
Joining Date : 12/17/2009 08:00:00+
Address : CA-94777+
This is nothing but the ref cursor should run like as below:
Select S_id from student_record block S_id = :p_S_id;
Select S_Join_date from student_record block S_id = :p_S_id;
Select S_Address from student_record block S_id = :p_S_id;
So, according to my understanding i have to select the columns at the run time. I dont have much knowledge in creating reports using ref cursor or dynamic sql.
So please help me to solve this issue.
Thanks in advance.

Plain sql should satisfy your need. Try ....
Select S_id, S_Join_date, S_Address
from student_record
where S_id = :p_S_id

Unable to use ref cursor as a input parameter at the time of inserting reco

Hi
i am unable to use ref cursor when inserting the data to oracle 11g from visual studio 2008. please help me as early as possible my code is bellows
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Web.Configuration;
using Oracle.DataAccess.Client;
using Oracle.DataAccess.Types;
public partial class App_frmTest : System.Web.UI.Page
protected void Page_Load(object sender, EventArgs e)
protected void btnClick_Click(object sender, EventArgs e)
OracleCommand cmd=new OracleCommand();
Data objdata = new Data();
int i = 0;
string constr = "Data Source=Cwc;User Id=scott; Password=tiger;";// enlist=false; pooling=false;
OracleConnection con = new OracleConnection(constr);
/*Connection Open*/
con.Open();
cmd.Connection = con;
/*Connection Open End*/
/*Select Through Ref Cursor*/
cmd.CommandText = "scott.TEST_USER.getUSER";
cmd.CommandType = CommandType.StoredProcedure;
OracleParameter p_rc = cmd.Parameters.Add("p_rc", OracleDbType.RefCursor, DBNull.Value, ParameterDirection.Output);
OracleParameter p_rc1;
if (TextBox1.Text == "")
p_rc1 = cmd.Parameters.Add("p_rc", OracleDbType.Int16, DBNull.Value, ParameterDirection.Input);
else
p_rc1 = cmd.Parameters.Add("p_rc", OracleDbType.Int16, Convert.ToInt16(TextBox1.Text), ParameterDirection.Input);
// OracleParameter p_rc1 = cmd.Parameters.Add("p_rc", OracleDbType.Int16, 2, ParameterDirection.Input);
OracleDataReader reader = cmd.ExecuteReader();
DataSet ds = new DataSet();
DataTable dt1 = new DataTable();
dt1.Load(reader);
ds.Tables.Add(dt1);
GridView1.DataSource = ds;
GridView1.DataBind();
cmd.Parameters.Clear();
con.Close();
con.Dispose();
OracleCommand cmd1 = new OracleCommand();
OracleConnection con1 = new OracleConnection(constr);
con1.Open();
cmd1.Connection = con1;
cmd1.CommandText = "scott.TEST_USER.ADDUSER";
cmd1.CommandType = CommandType.StoredProcedure;
OracleParameter P_ADDUSER = cmd1.Parameters.Add("P_ADDUSER", OracleDbType.RefCursor, DBNull.Value, ParameterDirection.Input);
cmd1.ExecuteNonQuery(); // i am getting error when executing this line
Server Error in '/CWC' Application.
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Source Error:
Line 77: OracleParameter P_ADDUSER = cmd1.Parameters.Add("P_ADDUSER", OracleDbType.RefCursor, DBNull.Value, ParameterDirection.Input);
Line 78: //OracleParameter P_MSG = cmd.Parameters.Add("P_MSG", OracleDbType.Varchar2, DBNull.Value, ParameterDirection.Output);
Line 79: cmd1.ExecuteNonQuery();
Line 80:
Line 81: DataTable dt = new DataTable();
Source File: d:\CWC\App\frmTest.aspx.cs Line: 79
Stack Trace:
[AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.]
Oracle.DataAccess.Client.OpsSql.ExecuteNonQuery(IntPtr opsConCtx, IntPtr& opsErrCtx, IntPtr& opsSqlCtx, IntPtr& opsDacCtx, IntPtr opsSubscrCtx, Int32& isSubscrRegistered, Int32 bchgNTFNExcludeRowidInfo, Int32 bQueryBasedNTFNRegistration, Int64& query_id, OpoSqlValCtx*& pOpoSqlValCtx, String pCommandText, IntPtr& pUTF8CommandText, IntPtr[] pOpoPrmValCtx, String[] ppOpoPrmRefCtx, OpoMetValCtx*& pOpoMetValCtx, Int32 prmCnt, Int32 bFromPool) +0
Oracle.DataAccess.Client.OracleCommand.ExecuteNonQuery() +4731
App_frmTest.btnClick_Click(Object sender, EventArgs e) in d:\CWC\App\frmTest.aspx.cs:79
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

Hi;
Its better to ask it at visual studio forum site:http://social.msdn.microsoft.com/Forums/en-US/category/visualstudio
Regard
Helios

How to update data returned using REF CURSOR

Hi all,
I am trying to update updated data in a gridview but the update button seem to do nothing as i retrieve data using REF CURSOR.
Let me describe the architecture of my application first. I'm trying to implement best practice whenever possible. I am following the data access tutorial published in www.asp.net , the only difference is that i have an Oracle (10g) database. So I split my application into three layers, data access, business logic, and presentation layer. I'm also writing all queries in an Oracle package.
So I have my Oracle packages that perform CRUD operations. Then I have an xsd file that define dataTable based on the package procedure. My business logic layer then calls functions defined in the xsd file. And finally a detailsView control that uses an ObjectDataSource to call business logic functions.
In a nutshell, I am just trying to update records retrieved using REF CURSOR. Your help is very much appreciated. Please let me know if further details are required. Cheers,

In the DataSet (xsd) where your DataTable is defined, you just need to add additional methods to the TableAdapter to handle insert, update and delete, either with SQL or by mapping to stored procedures.
Alternatively in code, create an OracleDataAdapter and supply its InsertCommand, UpdateCommand and DeleteCommand.
David

Using Ref cursor in Bpel

Hi,
I need to use ref cursors in bpel.
Basically calling a stored proc using DB Adapter , which returns a Ref cursor.
Not able to get it work, any suggestion help is greatly appreciated.
Also followed: http://download.oracle.com/docs/cd/B31017_01/integrate.1013/b28994/adptr_db.htm#CHDDDDJI
But its quite abstract.
Thanks !!

Hi Raj,
I am able to use the REF cursor with BPEL.
I am able to pass the resultset from Database using a REF cursor to a BPEL variable .
When you create a BPEL variable , create it with message type as the output message type of the REF Cursor.
Regards
Pradosh

Procedure to fetch table records using ref cursor

Hi
i need to fetch all the records in the table using ref cursor.we need to pass table
name and the out paramater should be ref cursor.
CREATE OR REPLACE PROCEDURE gettable(p_table_name IN VARCHAR2,
p_ref_cursor OUT dept_pack.ref_cursor1)
IS
BEGIN
OPEN p_ref_cursor FOR SELECT * FROM p_table_name;
END gettable;
is that a start ? then after this i have to execute this procedure to fetch the data from table. i am getting error that table doesnot exist but my idea was to pass p_table_name as IN parameter.
Thnks in Advance

here is the example
SQL> CREATE OR REPLACE PROCEDURE TEST( t_name IN VARCHAR2
2                                  , p_cursor OUT SYS_REFCURSOR)
3 IS
4 BEGIN
5    OPEN p_cursor FOR
6    'SELECT * FROM '|| t_name ;
7 END TEST;
8 /
Procedure created.
Elapsed: 00:00:00.02
SQL> var o refcursor;
SQL> var tname varchar2(10);
SQL> execute test('EMP',:o);
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.00
SQL> print :o;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM        DNO
      7369 SMITH      CLERK           7902 17-DEC-80      800.2                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-81       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7654 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400         30
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7788 SCOTT      ANALYST         7566 19-APR-87       3000                    20
      7839 KING       PRESIDENT            17-NOV-81       5000                    10
      7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
      7876 ADAMS      CLERK           7788 23-MAY-87       1100                    20
      7900 JAMES      CLERK           7698 03-DEC-81        950                    30
      7902 FORD       ANALYST         7566 03-DEC-81       3000                    20
      7934 MILLER     CLERK           7782 23-JAN-82       1300                    10
14 rows selected.
Elapsed: 00:00:00.01
SQL> execute test('DEPT',:o);
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.02
SQL> print :o;
    DEPTNO DNAME          LOC
        90 LOGISTIC
        10 ACCOUNTING     NEW YORK
        20 RESEARCH       DALLAS
        30 SALES          CHICAGO
        40 OPERATIONS     BOSTON
Elapsed: 00:00:00.01

Example of Simple SP using REF Cursors

Hi All,
i want simple stored procedure using REF Cursors.
Select * From Emp Where Deptno='20'
Use Scott & Tiger, Default database.
i am poassing parameter deptno at runtime.i want all the records of deptno=20.
i know REF Cursors return Record Set.but i created,it will throw errors.
Anyone pls help

Post your code what you have tried. Also your requirement can be fulfilled with parametrized cursor.
http://download.oracle.com/docs/cd/E11882_01/appdev.112/e17126/static.htm#LNPLS00602
http://download.oracle.com/docs/cd/E11882_01/appdev.112/e17126/static.htm#LNPLS00605

How to access variable number of columns using ref cursor !

Hi,
I am trying to get variable number of columns using ref cursor.
Declare
mySzSql varchar2(2000);
Type dynSqlRC is Ref cursor;
current_cur dynSqlRC;
tbl_rec alt_42_consolidated%Rowtype;
Begin:
/* This works */
mySzSql := 'select *
from
Table1
Where
rowid = ''AAEWNEABXAAAAkxAAA''';
/* i want something like this to work, this is not working, giving missing variable name error */
mySzSql := 'select col1, col2, col3
from
Table1
Where
rowid = ''AAEWNEABXAAAAkxAAA''';
open current_cur for mySzSql;
fetch current_cur into tbl_rec;
close current_cur;
End;
I do have the list of desired columns which I am looking to fetch, so after taking that in the record type, how should i get their values. Is it possible to traverse tbl_rec declared above and if column name matches then I will store the value in the array and finally return this array.
Can somebody please tell me how to do this.
Thanks

It appears that this is a followup to How to loop through columns selected by select clause which is itself a followup to [url="
How to execute dynamic sql"]this earlier thread.
Assuming these are intended to be followup questions, can we please stick to a single thread? That makes it a lot easier to understand the situation and follow the conversation. Starting multiple threads makes it harder to follow the conversation.
Thanks,
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Calling stored proc from java using ref cursor

Hi All,
We have a requirement to display all the records from a table on a JAVA screen. Due to some constraints, we have to write the query in the stored proc. We are trying to return a result set from the stored proc to the java code by using a ref cursor. Please refer to the code below.
Following is the PL/SQL proc �
procedure sp_user_course2(v1 OUT ref_cursor, persid in varchar2) as
begin
open v1 for
SELECT lrn_exp_id, crs_name FROM emp_crs
WHERE personid = persid;
end;
Here ref_cursor is of TYPE REF CURSOR declared in the package specification.
The java code is �
Callable stmt = conn.prepareCall("call sp_user_course2(?,?)");
stmt.registerOutParameter(1,OracleTypes.CURSOR);
stmt.setString(2,emplId);
stmt.execute();
OracleCallableStatement tstmt = (OracleCallableStatement) stmt;
ResultSet rs = tstmt.getCursor (1);
When I run the program, I get the following error (at stmt.execute()):
[Oracle][ODBC][Ora]ORA-06553: PLS-306: wrong number or types of arguments in call to 'SP_USER_COURSE2' 6553
Can anyone tell me what could be the problem with this code? I have read somewhere that REF CURSOR feature is available from Oracle 9i onwards. If so, then, is there any workaround for mapping REF CURSOR to Resultsets in Oracle 8i?

These may help
http://www.google.co.uk/search?q=jdbc+OracleTypes.CURSOR+tutorial

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

Need Help: Using Ref Cursor in ProC to call a function within a Package

I'm calling a function within a package that is returning a REF CURSOR.
As per the Oracle Pro*C Programmer's Guide, I did the following:
1) declared my cursor with a: EXEC SQL BEGIN DECLARE SECTION and declared the cursor as: SQL_CURSOR my_cursor;
2) I allocated the cursor as: EXEC SQL ALLOCATE :my_cursor;
3) Via a EXEC SQL.....END-EXEC begin block
I called the package function and assign the return value to my cursor
e.g. my_cursor := package.function(:host1, :host2);
Now, the only difference between my code and the example given in the Pro*C Programmer's Guide is that the example calls a PROCEDURE within a package that passes back the REF CURSOR as an OUT host variable.
Whereas, since I am calling a function, the function ASSIGNS the return REF CURSOR in the return value.
If I say my_cursor := package.function(:host1, :host2); I get a message stating, "PLS-00201: identifier MY_CURSOR" must be declared"
If I say :my_cursor := package.function(:host1, :host2); I get a message stating, "ORA-01480: trailing null missing from STR bind value"
I just want to call a package function and assign the return value to a REF CURSOR variable. There must be a way of doing this. I can do this easily in standard PL/SQL. How can this be done in Pro*C ???
Thanks for any help.

Folks, I figured it out. For those who may face this problem in the future you may want to take note for future reference.
Oracle does not allow you to assign the return value of a REF CURSOR from a FUNCTION ( not Procedure - - there is a difference) directly to a host variable. This is the case even if that host variable is declared a CURSOR variable.
The trick is as follows: Declare the REF CURSOR within the PL/SQL BEGIN Block, using the TYPE statement, that will contain the call to the package function. On the call, you then assign the return REF CURSOR value that the function is returning to your REF CURSOR variable declared in the DECLARE section of the EXEC SQL .... END-EXEC PL/SQL Block.
THEN, assign the REF CURSOR variable that was populated from the function call to your HOST cursor varaible. Then fetch this HOST Cursor variable into your Host record structure variable. Then you can deference individual fields as need be within your C or C++ code.
I hope this will help someone facing a deadline crunch. Happy computing !

Problem using REF CURSOR in JDBC

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