Returning a Ref cursor as an OUT Parameter

Hi Guys
I have defined 2 Types and 2 Ref cursors as shown below.I have written a procedure having 2 IN and 2 OUT parameters which are of type Ref cursors and return records to the calling client. My question is how can i test for the output of the two cursors here in pl/sql?.. also i should not close the sursors.. right?..its the job of the calling client as per my knowledge....Please suggest
TYPE type_dept_Rec IS RECORD(deptNo varchar2);
TYPE type_prod_Rec IS RECORD(prodType varchar2);
TYPE deptCursor IS REF CURSOR RETURN type_dept_Rec;
TYPE prodCursor IS REF CURSOR RETURN type_prod_Rec;
PROCEDURE TEST (pinCode IN varchar2, prodType IN number, deptCursor OUT deptType, productCursor OUT deptType) IS
BEGIN
OPEN deptCursor FOR SELECT
deptNo
from
DEPT
where
pinCode = pinCode;
OPEN productCursor FOR SELECT
prodCode
from
PROD
where
prodType = prodType;
end;

A Correction to the above code snippet
Hi Guys
I have defined 2 Types and 2 Ref cursors as shown below.I have written a procedure having 2 IN and 2 OUT parameters which are of type Ref cursors and return records to the calling client. My question is how can i test for the output of the two cursors here in pl/sql?.. also i should not close the sursors.. right?..its the job of the calling client as per my knowledge....Please suggest
TYPE type_dept_Rec IS RECORD(deptNo varchar2);
TYPE type_prod_Rec IS RECORD(prodType varchar2);
TYPE deptCursor IS REF CURSOR RETURN type_dept_Rec;
TYPE prodCursor IS REF CURSOR RETURN type_prod_Rec;
PROCEDURE TEST (pinCode IN varchar2, prodType IN number, deptCursor OUT deptCursor, productCursor OUT prodCursor) IS
BEGIN
OPEN deptCursor FOR SELECT
deptNo
from
DEPT
where
pinCode = pinCode;
OPEN productCursor FOR SELECT
prodCode
from
PROD
where
prodType = prodType;
end

Similar Messages

Function call returned in ref cursor

We have a ref cursor that calls a function in a package. When ODP.NET reads the cursor, it can't see what the function is returning. OO4O works fine, and if I take the sql that populates the ref cursor and put it into a temporary table, then select from that temporary table to return the ref cursor to ODP, it works fine. Anyone else seen this issue? Any help would be appreciated. Thanks.
Eric Schrauth
[email protected]

Did you set the parameter direction to be ParameterDirection.Input when you created the parameter? Post your code.

Plsql use a function which returns a ref cursor

Hi
I've been using an function which returns a ref cursor. I've been returning this into a java resultset. Fine!
Now i'm in plsql and want to use the same function. I'm not sure how to get this resultset in plsql.

It's not very practical to use a refcursor like you want to, but here you go
create or replace function test_ref
return sys_refcursor
is
v_rc sys_refcursor;
begin
open v_rc for select emp_name from emp ;
return v_rc;
end;
declare
v_rc sys_refcursor;
v_emp_name emp.emp_name%type;
begin
v_rc := test_ref ;
loop
    fetch v_rc into v_emp_name ;
    exit when v_rc%notfound ;
    dbms_output.put_line('Employee Name: '||v_emp_name );
end loop;
end;

How to return a ref cursor from this dbms_sql?

Hi,
Can anyone show me how to return a ref cursor from this dbms_sql based procedure? I see 11g has a dbms_sql.to_refcursor(cursor_handle). How can this be done is 10g?
Thx.
CREATE OR REPLACE PROCEDURE Sample_Get_t
p_sample_id sample.sample_id%TYPE,
p_contract_id sample.contr_id%TYPE
IS
cursor_handle INT;
sql_stmnt varchar2(500);
rows_processed NUMBER;
BEGIN
sql_stmnt :=
'SELECT
sample_id,
contr_id,
rcpt_id
FROM
sample s
WHERE
s.contr_id = :1
and s.sample_id = :2
ORDER BY
sample_id';
cursor_handle := dbms_sql.open_cursor;
dbms_sql.parse(cursor_handle, sql_stmnt, dbms_sql.native);
dbms_sql.bind_variable(cursor_handle, ':1', p_contract_id);
dbms_sql.bind_variable(cursor_handle, ':2', p_sample_id);
rows_processed := dbms_sql.execute(cursor_handle);
dbms_sql.close_cursor(cursor_handle);
END Sample_Get_t;

In 10 this cannot be done with dbms_sql (to my knowledge). There are a couple of other options.
1) open the ref cursor for the dynamic statement using bind variables (or SYS_CONTEXT variables, which i prefer since they are much easier to deal with when you are dynamically adding predicates).
declare
   wRefCursor SYS_REFCURSOR;
begin
   open wRefCursor for 'select * from all_objects where owner = :Logged_in_user' using user;
end;
/or using the context (the context will bind for you)
declare
   wRefCursor SYS_REFCURSOR;
begin
   open wRefCursor for 'select * from all_objects where owner = SYS_CONTEXT(''CONTEXT_NAME'', ''VARIABLE_NAME'') ';
end;
/Be aware that contexts ALWAYS return varchar values, so if you are comparing to a number you should wrap it in TO_NUMBER, a date, TO_DATE and so on....
2) change the DBMS_SQL to do an insert into a global temporary table and return the ref cursor which select's * from GTT;
3) upgrade to Oracle 11 :)

Procedure to RETURN a REF CURSOR

Environment:
OWB10g Client on Windows XP Professional
Repository - 9.2.0.4 on UNIX (AIX 5.2)
Target - 9.2.0.4 on UNIX (AIX 5.2)
Is it possible to create a PROCEDURE in OWB that returns a REF CURSOR?
It was not one of the TYPEs available when specifying the procedure parameters.
Is this an enhancement that's coming if it's not possible today?
Many thanks for all feedback. This is a great interactive discussion forum.
Gary

Good afternoon Gary,
Have you checked whether it's possible to use the table-function?
Don't know you specific requirements, but according to the explanation ("Table functions extend PL/SQL and are a new option in Oracle9i. This option allows a function to accept, process and return multiple rows.") it at least is capable of returning rowtypes.
Cheers, Patrick

Oracle Function returns a Ref Cursor to a ResultSet object - Performance

My program calls an Oracle PL/SQL function which returns a ref cursor to a ResultSet object. I know that the function runs to completion relatively quickly when i run it in an anonymous block but when the call is made through my Java application the resultset takes about 30 mins to return. Below is a snippet of my code:
currentConnection = ConnectionManager.getInstance().getConnection();
reportStmt = currentConnection.prepareCall("BEGIN ? := ENVISION.PKG_WMS_TO_AP.F_REPORT_CI_SC_HOLDING(?,?); END;"); reportStmt.registerOutParameter(1, OracleTypes.CURSOR);
reportStmt.setString(2, invoice.getCrewHQ());
reportStmt.setDate(3, invoice.getWrCompletionDate());
reportStmt.execute();
reportRS = ((OracleCallableStatement) reportStmt).getCursor(1);
Through a debugger I see that the second last statement (reportStmt.execute()) runs quickly. It is only when I step into the last statement that the debugger takes up to 30 minutes.
Any thoughts?

Flynn,
The Internet is a dynamic place. After nearly two and a half years, there is a chance that a link will change. This is the new URL for the relevant Web page:
http://asktom.oracle.com/~tkyte/ResultSets/
Good Luck,
Avi.

How to return more than one record through OUT parameter in procedure

Hi,
I want to create a procedure which accepts one input and returns more than one record as output.
example:
Input = DeptNo
Output= Empno,ename,sal,comm,job
Scenario:
There can be more than one employee in department we pass as the IN parameter. OUT parameter has to return all the records of the corresponding employee details in that department.
Thanks in advance for your help
Regards,
K.Vijay

-- I think you can try something like this using ref cursor:
-- create a package for the type ref cursor and execute
CREATE OR REPLACE PACKAGE PACK_REFCURSOR_FOR_TABLES AS
     TYPE DATA_TableRows IS REF CURSOR;
END;
-- after executing the package above, create your procedure:
CREATE OR REPLACE PROCEDURE GET_EMP (
     IN_nDeptNo IN number,
     OUT_Emp OUT PACK_REFCURSOR_FOR_TABLES.DATA_TableRows)
IS
BEGIN
-- leave query open (implicit) as this will return data
     OPEN OUT_Emp FOR
     SELECT *
     FROM tblEmp
     WHERE DeptNo = IN_nDeptNo;
END;
--execute the procedure and you're done

ResultSet of a cursor as an out parameter

How can you return a cursor or a resultSet as an OUT parameter? - Any info will be greatly appreciated. A code ex will be great
vj

Assuming you mean as an output parameter of pl/sql procedure being called from pl/sql...
declare
type refcur_type is ref cursor;
type tab_user_tables_type is table of user_tables%rowtype index by binary_integer;
refcur_user_tables refcur_type;
tab_user_tables tab_user_tables_type;
row_user_tables user_tables%rowtype;
procedure get (
    out_refcur_user_tables out refcur_type,
    out_tab_user_tables out tab_user_tables_type) is
begin
    for row_user_tables in (select * from user_tables) loop
      out_tab_user_tables(nvl(out_tab_user_tables.count, 0) + 1) := row_user_tables;
    end loop;
    open out_refcur_user_tables for select * from user_tables;
end get;
begin
get(refcur_user_tables, tab_user_tables);
dbms_output.put_line('from table ...');
for i in 1 .. tab_user_tables.count loop
    dbms_output.put_line(tab_user_tables(i).table_name);
end loop;
dbms_output.put_line('from reference cursor ...');
loop
    fetch refcur_user_tables into row_user_tables;
    exit when refcur_user_tables%notfound;
    dbms_output.put_line(row_user_tables.table_name);
end loop;
end;

Returning a ref cursor on a Global Temporary table

I realize this is probably not feasible but I am manipulating data and storing it in a GTT and I wish to return that transformed data out as a ref cursor is this possible to do? I also dont want a static table because this is a heavily hit procedure and I do not want to have to keep track of which session is which data not to mention contention between them.
I am using Oracle 10g on Windows server 2008

You will be able to see the records in the refcursor in the same session
Example
SQL> create global temporary table X_GTT as select * from emp where 1=2;
Table created.
SQL> insert into x_GTT select * from emp ;
14 rows created.
SQL> var rf refcursor ;
SQL> begin
2    open :rf for select * from X_GTT ;
3 end ;
PL/SQL procedure successfully completed.
SQL> print rf
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-80        800                    99
      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.SS

Ref cursor to object and return to ref cursor

how i will call object type from refcursor and return value to ref cursor .

I need a help. please help me.
takes oracle object types as input/output.
PROCEDURE createserviceorder(
P_serviceorder IN serviceorder,
P_serviceid in out p_sm_type.serviceid,
P_serviceorderid out p_sm_type.serviceorderid,
Returnstatus out callstatus);
The serviceorder, callstatus are oracle object types.
The wrapper procedure for this API would be something like the example with pseudo code below
PROCEDURE createserviceorderwrapper(
P_serviceorder IN REFCURSOR,
P_serviceid in out p_sm_type.serviceid,
P_serviceorderid out p_sm_type.serviceorderid,
Returnstatus out REFCURSOR)
Map from ref cursor P_serviceorder to oracle object for serviceorder;
Map from other data types to local variables;
Call createserviceorder (pass the parameters here and get output.);
Map output callstatus to its equivalent REF CURSOR variable;
Return callstatus (and other out parameters if any )as REF CURSORS;
}

Cursor bound to out parameter with Connection Pool

Is it possible to retrieve a cursor bound to an out parameter when using the thin
driver to establish the connection pool to the database? I am currently using
the JDriver to connect create the pool and the pool driver to connect from the
app to the connection pool. We'd like to avoid using the Oracle client if possible.
Currently I register the out parameter as java.sql.Types.OTHER, then call getResultSet(1)
on the weblogic.jdbc.pool.CallableStatement object. But it breaks when I change
the connection pool to use the thin driver. The error is at the bottom of this
post.
I think I could possibly get the current pool driver to work if can find some
documentation on these two methods:
void registerOutParameter(int i, int j, int k, int l)
void registerOutParameter(int i, int sqlType, java.lang.String typeName)
I have no idea what to put in for the ints in the first method or for sqlType
or typeName. Can anyone point me to where I can find this documentation?
E-docs mentions this class: weblogic.jdbc.vendor.oracle.OracleCallableStatement.
(http://edocs.bea.com/wls/docs61/jdbc/thirdparty.html#1023867). Should I consider
this? If so where is it?
Thanks a lot,
Matt Savino
<<< error when using thin driver >>>
preparing callable stmt
callable stmt prepared, java.sql.Types.OTHER = 1111
java.sql.SQLException: Invalid column type
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:210)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:273)
at oracle.jdbc.driver.OracleStatement.get_internal_type(OracleStatement.java:4560)
at oracle.jdbc.driver.OracleCallableStatement.registerOutParameter(OracleCallableStatement.java:225)
at oracle.jdbc.driver.OracleCallableStatement.registerOutParameter(OracleCallableStatement.java:350)
at weblogic.jdbc.pool.Statement.registerOutParameter(Statement.java:617)
at jsp_servlet._reportmanager.__thin_outputresultset._jspService(__thin_outputresultset.java:145)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:263)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2390)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1959)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

Thanks Joe, your answer pointed me in the right direction. Just in case anyone
wants to know, the solution took two changes:
CHANGE
cStat.registerOutParameter(1, java.sql.Types.OTHER);
TO
cStat.registerOutParameter(1, oracle.jdbc.driver.OracleTypes.CURSOR);
(cStat is an instance of weblogic.jdbc.pool.CallableStatement)
AND
rs = cStat.getResultSet(1);
TO
rs = cStat.getCursor(1);
Thanks again,
Matt
Joseph Weinstein <[email protected]> wrote:
Hi Matt.
Look at the Oracle thin driver documentation to determine what type you
should define in the registerOutParameter call. We use 'OTHER', but
their driver may use something else for CURSOR output parameters.
joe
Matt Savino wrote:
Is it possible to retrieve a cursor bound to an out parameter whenusing the thin
driver to establish the connection pool to the database? I am currentlyusing
the JDriver to connect create the pool and the pool driver to connectfrom the
app to the connection pool. We'd like to avoid using the Oracle clientif possible.
Currently I register the out parameter as java.sql.Types.OTHER, thencall getResultSet(1)
on the weblogic.jdbc.pool.CallableStatement object. But it breaks whenI change
the connection pool to use the thin driver. The error is at the bottomof this
post.
I think I could possibly get the current pool driver to work if canfind some
documentation on these two methods:
void registerOutParameter(int i, int j, int k, int l)
void registerOutParameter(int i, int sqlType, java.lang.String typeName)
I have no idea what to put in for the ints in the first method or forsqlType
or typeName. Can anyone point me to where I can find this documentation?
E-docs mentions this class: weblogic.jdbc.vendor.oracle.OracleCallableStatement.
(http://edocs.bea.com/wls/docs61/jdbc/thirdparty.html#1023867). Should
I consider
this? If so where is it?
Thanks a lot,
Matt Savino
<<< error when using thin driver >>>
preparing callable stmt
callable stmt prepared, java.sql.Types.OTHER = 1111
java.sql.SQLException: Invalid column type
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:210)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:273)
at oracle.jdbc.driver.OracleStatement.get_internal_type(OracleStatement.java:4560)
at oracle.jdbc.driver.OracleCallableStatement.registerOutParameter(OracleCallableStatement.java:225)
at oracle.jdbc.driver.OracleCallableStatement.registerOutParameter(OracleCallableStatement.java:350)
at weblogic.jdbc.pool.Statement.registerOutParameter(Statement.java:617)
at jsp_servlet._reportmanager.__thin_outputresultset._jspService(__thin_outputresultset.java:145)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:263)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2390)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1959)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
PS: Folks: BEA WebLogic is expanding rapidly, with both entry and advanced
positions
for people who want to work with Java, XML, SOAP and E-Commerce infrastructure
products.
We have jobs at Nashua NH, Liberty Corner NJ, San Francisco and San Jose
CA.
Send resumes to [email protected]

Difference Ref cursor with/with out using clause

Hi everyone,
When I am using dynamic sql with USING clause ,the results are not sorted in Ascending order.
DECLARE
TYPE emp_refcursor IS REF CURSOR;
emp_rc emp_refcursor;
TYPE v_emp_id IS TABLE OF number INDEX BY PLS_INTEGER;
TYPE v_last_name IS TABLE OF varchar2(50) INDEX BY binary_integer;
V_empno v_emp_id;
v_ename v_last_name;
p_deptno number := &U_DEPTNO;
v_limit number := 10;
v_ordcolumn varchar2(20) := 'employee_id';
v_stmt varchar2(1000);
BEGIN
v_stmt :=
'select employee_id,last_name from employees
where department_id = :x order by :y ';
dbms_output.put_line(v_stmt);
OPEN emp_rc FOR v_stmt USING p_deptno,v_ordcolumn;
LOOP
FETCH emp_rc BULK COLLECT INTO v_empno,v_ename LIMIT v_limit;
EXIT WHEN v_empno.count = 0;
FOR I IN v_empno.first .. v_empno.last
LOOP
dbms_output.put_line(v_empno(i)||' '||v_ename(i));
END LOOP;
END LOOP;
END;
When I use dynamic sql with out USING cluase,results are sorted in Ascending order.
DECLARE
TYPE emp_refcursor IS REF CURSOR;
emp_rc emp_refcursor;
TYPE v_emp_id IS TABLE OF number INDEX BY PLS_INTEGER;
TYPE v_last_name IS TABLE OF varchar2(50) INDEX BY binary_integer;
V_empno v_emp_id;
v_ename v_last_name;
p_deptno number := &U_DEPTNO;
v_limit number := 10;
v_ordcolumn varchar2(20) := 'employee_id';
v_stmt varchar2(1000);
BEGIN
v_stmt :=
'select employee_id,last_name from employees
where department_id = '||p_deptno ||
' order by '||v_ordcolumn;
dbms_output.put_line(v_stmt);
OPEN emp_rc FOR v_stmt;
LOOP
FETCH emp_rc BULK COLLECT INTO v_empno,v_ename LIMIT v_limit;
EXIT WHEN v_empno.count = 0;
FOR I IN v_empno.first .. v_empno.last
LOOP
dbms_output.put_line(v_empno(i)||' '||v_ename(i));
END LOOP;
END LOOP;
END;
P.S :---- department_id (used) = 50;
Please can some one explain why this is happening like this.
Thanks
Raghu
--------------------------------------------------------------------------------

Hi sundar,
I am new to oracle and learning/trying to get the same output by using differnt methods,rather than using FOR LOOP ,I tried to use ref cursor with dynamic sql.I am in a belief that ref cursor's with dynamic sql are faster than FOR LOOP,irrespective of the size of data.Can you correct me if I am wrong.
Coming back to ur reply,how should my statement look like,when using ref cursor
with USING claus to sort data by asc/desc order.
Thanks in advance
Raghu

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

Does OraOLEDB support passing a Ref Cursor as an IN parameter of a Stored Procedure?

We have a number of Stored Procedures that take a Cursor as an input parameter. Is it possible to call a Stored Procedure of this type with OraOLEDB? If so could you provide a quick sample using VC++/ATL?
Thanks...

Thank you for your reply, Yuancai. It would be very useful if the OLE DB team added such an interface to future versions of TCommand. However, for the time being what is the preferred technique for passing large amounts of data to a stored procedure? For instance we have a number of tables that have fifty or more columns. It would be awkward to call a stored procedure with this many parameters. Ideally, one would want to create a structure as a User Defined Type and pass that as a parameter.
One approach we though of was to pass a XML string though a CLOB parameter and parse it in either a PL/SQL or Java stored procedure. However, while this approach is novel it is not standard. I've found it best to use standard techniques where possible. Any insight you could give would be appreciated.
Thanks,
Bryan Wood

Returning a Ref cursor as an OUT Parameter

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