Executing procedures in packages.

Question

<p>Hi </p><p>I am using CR XI developer edition.</p><p>I want to call stored procedures that currently resides in a package.  In database explorer it shows me:</p><p>"mypackage.testProcedure"  when I select it to execute, it gives me an error telling me <user>.testProcedure must be declared.  It drops the "mypackage" reference. Is there a value in <databaseStructure> I can set to make it recoginize and run my procedures in packages??</p><p>  <GenericJDBCDriver><br />  <Option>No</Option><br /> <strong> <DatabaseStructure>catalogs,schemas,tables</DatabaseStructure><br /></strong>  <StoredProcType>Oracle</StoredProcType><br />  <LogonStyle>Oracle</LogonStyle><br /> </GenericJDBCDriver></p><p>what values can <databaseStructure> have??</p><p> Shirley</p>

Answer 1

PLEASE POST YOUR QUESTIONS TO THE DEV FORUMS.
Requirements of Oracle Stored Procedures
In order for Crystal Reports to report off Oracle stored procedures, all of the
following requirements must exist.
u2022 To use an ODBC connection to access an Oracle stored procedure, you
must create a package that defines the REF CURSOR. This REF CURSOR
must be strongly bound to a static pre-defined structure (see Strongly Bound
REF CURSORs vs Weakly Bound REF CURSORs). This package must be
created separately and before the creation of the stored procedure.
u2022 A native connection to Oracle in Crystal Reports 9 and Crystal Reports 10
can be used to access an Oracle stored procedure that was created within a
package and also an Oracle stored procedure that references a weakly bound
REF CURSOR
u2022 The stored procedure must have a parameter that is a REF CURSOR type.
Crystal Reports uses this parameter to access and define the result set that
the stored procedure returns.
u2022 The REF CURSOR parameter must be defined as IN OUT (read/write
mode). After the stored procedure has opened and assigned a query to the
REF CURSOR, Crystal Reports will perform a FETCH call for every row
from the queryu2019s result. This is why the parameter must be defined as IN
OUT.
u2022 The parameters can only be defined as IN (input) parameters. Crystal
Reports is not designed to work with OUT parameters.
u2022 The REF CURSOR variable must be opened and assigned its query within
the procedure.
Crystal Reports Oracle Stored Procedures
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cr_oracle_stored_procedures.pdf
u2022 The stored procedure can only return one record set. The structure of this
record set must not changed, based on parameters.
u2022 The stored procedure cannot call another stored procedure.
u2022 If using an ODBC driver, it must be the CR Oracle ODBC driver installed
by Crystal Reports.
u2022 If you are using the CR ODBC driver, verify that the option u2018Procedure
Return Resultsu2019 is selected as u2018Onu2019 in the ODBC Driver Configuration setup
under the u2018Advancedu2019 tab.
u2022 If you are using the native Oracle driver and using hard-coded date selection
within the stored procedure, the date selection must use either a string
representation format of YYYY-DD-MM (where the date field = 2004-01-
01) or the To_Date formula function with the same format specified (where
date field = To_Date(2004-01-01u2019,u2019YYYY-MM-DDu2019).
u2022 Most importantly, the stored procedure must be able to execute successfully
in Oracleu2019s SQL *Plus utility.
If all of these requirements have been met, verify that the database driver that
you are using works with that version of Oracle.
Strongly Bound REF CURSORs versus Weakly
Bound REF CURSORs
When declaring the REF CURSOR in an Oracle package, the REF CURSOR
may be strongly bound or it may be weakly bound.
A strongly bound REF CURSOR is bound with the same structure that is used
by the outputted SELECT statement in the Oracle stored procedure.
CREATE OR REPLACE PACKAGE Test_Package
AS TYPE Test_Type IS REF CURSOR RETURN Test_Table%ROWTYPE;
END Test_Package;
The example code in green displays the REF CURSOR strongly bound. In this
example, the REF CURSOR is bound with the row structure of the Test_Table
table.
A weakly bound REF CURSOR is not assigned a structure in the Oracle
package.
CREATE OR REPLACE PACKAGE Test_Package
AS TYPE Test_Type IS REF CURSOR;
END Test_Package;
Although the REF CURSOR is not assigned a structure in the Oracle package,
the Oracle stored procedure itself must return a record set with a structure that
does not change based on parameters.
Crystal Reports Oracle Stored Procedures
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cr_oracle_stored_procedures.pdf
Creating an Oracle Stored Procedure
Samples of stored procedures and their steps on how to create them are
provided. These are samples of Oracle stored procedures that will return a result
set in Crystal Reports. If these samples were executed in the Oracle connection
utility, SQL *Plus, they should run successfully.
NOTE These sample stored procedures are provided as a tip. Refer to your Oracle
documentation for more information on creating stored procedures.
Sample A: Use with ODBC and native
connections in Crystal Reports
1. Create a table.
CREATE TABLE Test_Table
(ID number(5),
Firstname varchar2(30),
Lastname varchar2(30),
Birthday date);
2. Insert values into the table.
INSERT INTO Test_Table VALUES
(1, 'Christopher', 'Jones', '01-Nov-70');
INSERT INTO Test_Table VALUES
(2, 'Maria', 'Marshall', '02-Jan-77');
INSERT INTO Test_Table VALUES
(3, 'Jonathan', 'Campbell', '09-Aug-75');
INSERT INTO Test_Table VALUES
(4, 'Julie', 'Gagnon', '23-Dec-72');
INSERT INTO Test_Table VALUES
(5, 'Daemon', 'Thompson', '11-Feb-69');
3. Create the Package.
CREATE OR REPLACE PACKAGE Test_Package
AS TYPE Test_Type IS REF CURSOR RETURN Test_Table%ROWTYPE;
END Test_Package;
4. Create the stored procedure.
CREATE OR REPLACE PROCEDURE Test_Procedure (
Test_Cursor IN OUT Test_Package.Test_Type,
Test_Parameter IN Test_Table.ID%TYPE)
AS
BEGIN
Crystal Reports Oracle Stored Procedures
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cr_oracle_stored_procedures.pdf
OPEN Test_Cursor FOR
SELECT *
FROM Test_Table
WHERE Test_Table.ID = Test_Parameter;
END Test_Procedure;
5. Once the stored procedure is successfully created on your Oracle database,
execute the stored procedure.
Sample B: Weakly Bound REF CURSOR
Only use this sample with a native connection to Crystal Reports 9 or later.
1. Create a table.
CREATE TABLE Test_Table
(ID number(5),
Firstname varchar2(30),
Lastname varchar2(30),
Birthday date);
2. Insert values into the table.
INSERT INTO Test_Table VALUES
(1, 'Christopher', 'Jones', '01-Nov-70');
INSERT INTO Test_Table VALUES
(2, 'Maria', 'Marshall', '02-Jan-77');
INSERT INTO Test_Table VALUES
(3, 'Jonathan', 'Campbell', '09-Aug-75');
INSERT INTO Test_Table VALUES
(4, 'Julie', 'Gagnon', '23-Dec-72');
INSERT INTO Test_Table VALUES
(5, 'Daemon', 'Thompson', '11-Feb-69');
3. Create the Package.
CREATE OR REPLACE PACKAGE Test_Package
AS TYPE Test_Type IS REF CURSOR;
END Test_Package;
4. Create the stored procedure.
CREATE OR REPLACE PROCEDURE Test_Procedure (
Test_Cursor IN OUT Test_Package.Test_Type,
Test_Parameter IN Test_Table.ID%TYPE)
AS
BEGIN
Crystal Reports Oracle Stored Procedures
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cr_oracle_stored_procedures.pdf
OPEN Test_Cursor FOR
SELECT *
FROM Test_Table
WHERE Test_Table.ID = Test_Parameter;
END Test_Procedure;
5. Once the stored procedure is successfully created on your Oracle database,
execute the stored procedure.
Sample C: Stored procedure created within a
package
Only use this sample with a native connection to Crystal Reports 9 or later.
1. Create a table.
CREATE TABLE Test_Table
(ID number(5),
Firstname varchar2(30),
Lastname varchar2(30),
Birthday date);
2. Insert values into the table.
INSERT INTO Test_Table VALUES
(1, 'Christopher', 'Jones', '01-Nov-70');
INSERT INTO Test_Table VALUES
(2, 'Maria', 'Marshall', '02-Jan-77');
INSERT INTO Test_Table VALUES
(3, 'Jonathan', 'Campbell', '09-Aug-75');
INSERT INTO Test_Table VALUES
(4, 'Julie', 'Gagnon', '23-Dec-72');
INSERT INTO Test_Table VALUES
(5, 'Daemon', 'Thompson', '11-Feb-69');
3. Create the Package.
CREATE OR REPLACE PACKAGE Test_Package
AS TYPE Test_Type IS REF CURSOR RETURN Test_Table%ROWTYPE;
PROCEDURE Test_Procedure (
Test_Cursor IN OUT Test_Type,
Test_Parameter IN Test_Table.ID%TYPE
END Test_Package;
Crystal Reports Oracle Stored Procedures
2/18/2004 2:55 PM Copyright © 2004 Business Objects. All rights reserved. Page 8
cr_oracle_stored_procedures.pdf
4. Create the Package Body (With The Code For The Stored Procedure).
CREATE OR REPLACE PACKAGE BODY Test_Package
AS
PROCEDURE Test_Procedure (
Test_Cursor IN OUT Test_Type,
Test_Parameter IN Test_Table.ID%TYPE
) IS
BEGIN
OPEN Test_Cursor FOR
SELECT *
FROM Test_Table
WHERE Test_Table.ID = Test_Parameter;
END Test_Procedure;
END Test_Package;
5. Once the stored procedure is successfully created on your Oracle database,
execute the stored procedure.