Precompilers, OCI & OCCI :: Calling Stored Procedure From C Program
Mar 19, 2010
I need to call a PL/SQL stored procedure from a C program. Something like this sample program provided by Oracle -
main()
{
int i;
EXEC SQL BEGIN DECLARE SECTION;
/* Define type for null-terminated strings. */
EXEC SQL TYPE asciz IS STRING(20);
asciz username[20];
asciz password[20];
[code].......
The question is - how is the Stored procedure get_employees declared ? Or more specifically, how is the salary parameter declared in get_employees ?
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Nov 26, 2012
I am trying to call procedure from PRO C Procedure has many parameters and I do not need to put all of them when I call procedure. Is there way to make the same way as in PL/SQL
like this
my_procedure( q=>a1 , b=>'abc )
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May 12, 2009
I have an array of C structs say
struct S
{
int a, long b, double c;
};
S s[100];
Further suppose I have an Oracle table T like this:
create table T
(
a number(10),
b number(10),
c float
);
I want to bulk insert all 100 instances of S from a client application into T. I've seen code that does this for *one* field or column. The code defines a stored procedure which accepts a single argument which is a TABLE and then does a FORALL ... insert. The client application passes in the array of data.
What I need is N columns. In my example above struct S has N=3 fields which conform to the N=3 columns in T. In reality my N will be 50+. I am trying to avoid creating stored procedures which will take the 50 or so arguments it will eventually need.
So does my stored procedure need to accept N TABLE arguments? Or can I cajole OCI/OTL/ODBC and PL/SQL so that the stored procedure can take an array of rows which the type of row conforms to T by defining a record or something? That is, do I need:
Option 1: // declares one type and one argument each for N cols
create or replace procedure insert_S(
a_array IN A_TABLE, -- type A_TABLE is TABLE of number;
b_array IN B_TABLE, -- type B_TABLE is TABLE of number;
c_array IN C_TABLE) -- type C_TABLE is ...
begin ... end
Option 2: // this somehow accepts an array compatible with T
// if I could get a OCI/OCCI/OTL/ODBC application
// to send this data, this procedure would have
// only one argument
create or replace procedure insert_S(
row_array IN ?????????? type -- some sort of array of rows
)
begin ... end
Or should I pass the whole memory chunk of data in as an image or varchar array -- basically an opaque block of data -- and then internally decypher/decode the memory block inside the stored procedure as discussed on [URL].
best way to pass an array of N C-structs of M fields to a stored procedure for insertion into a table with M compatible columns? One TABLE per column? with an array of a custom type compatible with a row in T? As glob of data? Another option is to populate some host variables ... but, again, I'd need N host variables.
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Feb 1, 2010
I'm using an existing stored procedure in my C code. The stored procedure in question has been compiled and is proven to work without any errors. However, when I use the same in my C code, its failing with the above error.
The Store procedure definition looks like :
CREATE OR REPLACE FUNCTION SP(
srq_id integer ,
unid IN SPkg.arr_parmid,
parm_typ IN SPkg.arr_parm_typ,
[code].....
Type definitions
TYPE arr_parm_typ IS TABLE OF char INDEX BY BINARY_INTEGER;
TYPE arr_parmid IS TABLE OF tbl_parm.UNID%TYPE INDEX BY BINARY_INTEGER;
TYPE arr_parm_lbl IS TABLE OF tbl_parm.PARM_LBL%TYPE INDEX BY BINARY_INTEGER;
TYPE arr_parm_vlu IS TABLE OF tbl_parm.PARM_VLU%TYPE INDEX BY BINARY_INTEGER;
TYPE arr_vlu_hint IS TABLE OF tbl_parm.VLU_HINT%TYPE INDEX BY BINARY_INTEGER;
My C code looks like :
typedef struct param
{
char lbl[30][81];
char vlu[30][256];
char typ[30];
ub8 seq_no[30];
[code].....
The way I invoke the stored procedure:
char command[250] = "begin
:retval := SSP_srq_parm_all(:srq_id,:unid,:parm_typ,:parm_lbl,:parm_vlu,:commit_flag,:vlu_hint,:create_flag);
end;";
OCIStmtPrepare2((OCISvcCtx *)svchp, (OCIStmt **)&(stmthp),
(OCIError *)errhp, (OraText *)command,
[code].....
OCIStmtExecute() fails with the above error.
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Jan 28, 2011
I have a Cobol program that call C program above
#include stdlib
EXEC SQL INCLUDE SQLCA;
EXEC SQL BEGIN DECLARE SECTION;
char *uid = "puntos/puntos@cmrdesar";
[code]....
Are something wrong in C programm ? Pro*C code from vouters.dyndns.org/tima/OpenVMS-Cobol-C-Cobol_ passing_ variable_ number_ of_ arguments_to_C.html
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Oct 11, 2010
situation
1- process connect oracle ( process means PRO*C)
2- then process is finished
3- process was called from inside batch
My question is
after process ( binary program ) is finished. Is it possible to connect some way to oracle without login.
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May 11, 2009
I am trying to use OCIColl datatype and thus wanted to check if a simple program using OCI functions and data types gets compile or not. sO I wrote the follwoing function which I want to compile as a DLL.
extern "C" CLUSTERINGDLL_API OCIColl *fnClusteringDLL(OCIColl *dxm[])
{
OCIError *errhp;
OCINumber num_1, num_2, sum;
OCINumberAdd(errhp, &num_1, &num_2, &sum);
std::cout<<"Members in the array are "<<dxm[1]<<std::endl;
std::cout<<"2 Member in the array are "<<dxm[0]<<std::endl;
printf("Is this printed %f", dxm[0]);
return dxm[1];
}
But I am getting the following error:-
Error6error LNK2019: unresolved external symbol _OCINumberAdd referenced in function _fnClusteringDLLclusteringdll.obj...
I have included the library folder containing oci.lib in the project directories.
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Mar 28, 2006
I want write a program using oci to login into oracle database.Advance security option for the oracle server is set to kerberos authentication. Is it possible to login to the oracle database through olog() function.
Initial ticket is required in kerberos authentication. So is it also needed durinfg the login from my programme.
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May 13, 2005
my Multithread-Program hangs in an oracle library while passing a prepare statement (also if i try an EXEC SQL SELECT statement...). Something seems to be wrong in the Program, but i cant's find the Error.The Program is build with:
proc parse=none code=cpp mode=oracle hold_cursor=yes maxopencursors=20 THREADS=YES sqlcheck=full iname=Precomp_all.pc oname=Precomp_all.h
problem: a first thread creates the connection to oracle with one global context (type sql_context) in the connection object:
connect()
{
EXEC SQL WHENEVER SQLERROR DO ORASQL_ERROR();
EXEC SQL WHENEVER SQLWARNING DO ORASQL_WARNING();
EXEC SQL WHENEVER NOTFOUND DO ORASQL_NOP();
[code]....
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Jun 15, 2011
I want to call an exe file through DB Procedure. How it is possible?
1create or replace procedure proc3
2is
3begin
4 host('calc');
6* end;
from FORMS it works fine but it does not work through DB. I found same question through this link
[URL].........
but no answer is given.
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Apr 3, 2012
I have the following Stored Procedure:
CREATE OR REPLACE PROCEDURE AFESD.TEST_PROC (I_NUM IN NUMBER,
I_NUM2 IN NUMBER DEFAULT 3, D_DATE IN DATE DEFAULT sysdate,D_OUT OUT DATE)
IS
[Code]....
I dont know what I need to pass in order to give it the default value.
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Dec 17, 2012
I have a requirement to run below given URL by Stored Procedure. I am using Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
[URL]
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Apr 29, 2010
I created a table and some type definitions in oracle 10.2.0.3 DB as follows. There is also a procedure that I defined and is shown below.
SQL> create table test_proc
(
test_name varchar2(10),
test_ver number (3,3),
active_flag number(2)
);
Table created.
SQL> select * from test_proc;
TEST_NAME TEST_VER ACTIVE_FLAG
---------- ---------- -----------
AFP 1.5 2
PSA 11.89 0
EHIV 99.5 3
aHAVM 1.45 9
[code]....
Now from Pro*C function I want to pass a similar array of structure to this procedure and return it via the out parameter of the procedure back to Pro*C. How do I do it?
I am using the attached program but its giving me compiler error as follows..
Error at line 31, column 1 in file sample.pc
proc_modify_tdefs (:in_tdefs,:out_tdefs);
1
PLS-S-00306, wrong number or types of arguments in call to 'PROC_MODIFY_TDEFS'
Error at line 31, column 1 in file sample.pc
proc_modify_tdefs (:in_tdefs,:out_tdefs);
[code]....
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Jul 7, 2011
I have a trigger which is calling a stored procedure that has PRAGMA AUTONOMOUS_TRANSACTION defined. The values that are passed from the trigger have been committed already but it appears that the values are not available in the stored procedure. I'm not positive of this since the ability to log/commit is difficult and the timing of the output is confusing me a bit. I'd like to know if it's expected that any passed values are simply available in the stored procedure regardless of the AUTONOMOUS_TRANSACTION?
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Feb 16, 2011
We are calling a stored procedure in jsp page. The sql where bottleneck was assumed is giving better performance in sql plus (0.093 seconds) but when called from jsp its taking too much time.
Here is the plan for the sql
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes |
--------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 219 |
| 1 | SORT GROUP BY | | 1 | 219 |
| 2 | NESTED LOOPS | | 1 | 219 |
| 3 | NESTED LOOPS | | 1 | 197 |
| 4 | NESTED LOOPS | | 1 | 162 |
| 5 | MERGE JOIN | | 1 | 127 |
| 6 | TABLE ACCESS BY INDEX ROWID | policy_tbl | 1 | 78 |
| 7 | INDEX FULL SCAN | pk_pol_id | 1 | |
| 8 | SORT JOIN | | 1585 | 77665 |
| 9 | TABLE ACCESS BY INDEX ROWID| policy_p_tbl | 1585 | 77665 |
| 10 | INDEX RANGE SCAN | pp_param_1 | 1679 | |
| 11 | TABLE ACCESS BY INDEX ROWID | policy_group_tbl | 1 | 35 |
| 12 | INDEX RANGE SCAN | pg_indx_2 | 1 | |
| 13 | TABLE ACCESS BY INDEX ROWID | policy_group_tbl | 1 | 35 |
| 14 | INDEX RANGE SCAN | pg_indx_2 | 1 | |
| 15 | TABLE ACCESS BY INDEX ROWID | policy_dtl_tbl | 1 | 22 |
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
| 16 | INDEX UNIQUE SCAN | pk_pg | 1 | |
--------------------------------------------------------------------------------
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Apr 9, 2013
There are 2 Oracle databases with pseudo names Remote and Local. I have a function in Remote called FUS.F_Return_10 which simply returns 10 for testing purposes, where FUS is a schema name. In Local I want to create a procedure that will call the above function. Here's the PL/SQL:
CREATE OR REPLACE PROCEDURE TEST
(
V_COUNT OUT NUMBER
)
AS
V_FOO NUMBER(2,0);
BEGIN
[Code]...
There's a Public Database Link called PER_ACC in Local. When I try to create this procedure I get: Encountered symbol "@" when expecting one of the following: .(*%&................
where my mistake is?
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Oct 4, 2011
when i am calling stored procedure with input and output parameters from batch file .. I am getting the following message ..
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Oct 4 11:48:51 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options 14
code which i have written ...
DEClARE
RETCODE NUMBER;
RETMSG VARCHAR2(200);
EXEC SP_SELCT_EMPLOYEE_DATA(277080,'EMPNAME ','EMAIL@EMAIL.COM', 9028045686,111333,25000,'PUNE',35,RETCODE ,RETMSG );
EXIT
Procedure Name :
PROCEDURE SP_SELCT_EMPLOYEE_DATA (
-- A_EMPLOYEE_ID IN VARCHAR2,
--A_JOB_ID IN EMPLOYEES.JOB_ID%TYPE,
P_EMPLOYEE_ID IN EMPLOYEES.EMPLOYEE_ID%TYPE,
P_EMPLOYEE_NAME IN EMPLOYEES.EMPLOYEE_NAME%TYPE,
P_EMAIL IN EMPLOYEES.EMAIL%TYPE,
[code]....
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Jun 20, 2011
I am writing a java stored procedure in my package. In the java procedure I want to issue a query to be fired on the user table from which I am calling the java procedure.
Some thing like following:
I am logged in to USER1 and my package is inside USER1. From this package I am calling the Java Stored Procedure. In java procedure I want to make a jdbc connection to USER2. The details of USER2(password, hostname,portno) are stored in a table called 'connection_details' and this table is in the USER1.
My problem is how can I issue the
SELECT details FROM CONNECTION_DETAILS for USER2
so that i can get the details..?
Do i need to first make jdbc connection to USER1 and then execute the above query for which i need similar details of USER1. How can i obtain the details of USER1 here.
I am thinking if I am already in USER1 then do I need to make the jdbc connection to USER1 and then execute the query?
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May 8, 2013
How to call program unit(procedure/function/package) in to report is it like formula column & placeholder?if not, how to call external (procedure/function/package) in to report
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Aug 12, 2008
Is it possible to connect with Oracle using C?
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Sep 26, 2012
I am trying to give back data from a stored procedure written in C. I registered the functions as follows:create or replace procedure version(versioninfo OUT clob) as external name "version" library myLib language c with context parameters (context, versioninfo, versioninfo INDICATOR SB4); It compiles fine. The function being called look like this:
extern "C" DLLEXPORT
void version(OCIExtProcContext* context, OCILobLocator **out, sb4 *ind_out){
OCIEnv* envh;
OCISvcCtx* svch;
OCIError* errh;
OCIExtProcGetEnv (context, &envh, &svch, &errh);
std::string versioninfo = "104";
oraub8 maxChar = 10;
[code]...
If I execute the procedure with SQLDeveloper by pressing "play" it is getting executed but there is no result. If I try to execute it from an anonymous block it results in ORA-22275 instead of doing anything.
declare
res clob;
begin
-- the following doesn't work much
--dbms_lob.createtemporary(res,true);
version(res);
dbms_output.put_line(res);
end;
Actually I have to questions:
1.) Why does Oracle give me the error? In my opinion all requirements mentioned by the error description are met.
2.) Why is there no output when executing the function via SQL Developer? Is the usage of OCILobWrite wrong?
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Nov 26, 2009
I am trying to describe an STP in a package, but it gives me an error.
e.g. In package ABC suppose there is an STP XYZ, I am trying to describe ABC.XYZ function but it gives me an error code 4043 and error message object XYZ.ABC does not exist.
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Jan 24, 2009
My 10g pro*c application works perfectly, recently I upgraded it to 11g, but it keep crashing, why?
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Mar 31, 2010
i need to compile a proc program, say prog.pc.have oracle 10g in my system. Since i am new to proc programming, me on the steps to compile the proc program in oracle proc compiler.
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Aug 13, 2008
in my oci applications,if i get a column of number that is in the scope of int,i can use value = *(int *)field.data; get the value,but if the column size is larger than 10,the code can't be available,how can i get the value.
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Aug 25, 2009
My program needs to connect to two databases and make operations in both databases:
Quote:connect to db1;
connect to db2;
select from table in db1;
update table in db2;
i would like to know whether it's possible, and how to do it ? how to specify for each query the database connection to use?
note that I can't use dblinks as i don't have enough access rights and privileges on neither of the databases.
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Jan 30, 2009
How to report an Oracle bug? Is there webpage or email?
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Sep 17, 2008
My OS is Linux and I installed Oracle 10.2. Everything is fine.I can use sqlplus, exp, imp etc with no problem.Now I have created another linux user test in /home/test. I unzipped basic-10.2xxxxxx.zip (/home/test/instantclient_10_2) and exported LD_LIBRARY_PATH.I guess I have installed instant client in this way.
My testOra.cpp:
#include <occi.h>
int main()
{
return 0;
}
This test.cpp would not compile. It cannot find occi.
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Oct 7, 2010
I declare a cursor for a table with 8000 records, when I fetch the cursor this message appear ORA-03113: end-of-file on communication channels when the fetch reach the 6500 element, What is the problem here?. All data are ok, not null fields.
other problem
How I can reuse a cursor, I declare a cursor for a table where code_part = 300, then I fetch all elements until end cursor, then I close the cursor, Then I declare the same cursor again for the same table where code_part = 359, but it is not successful, when I tried to fetch the cursor again the cobol program show me the last record for the first code, How I can restart the cursor or delete it or freed the cursor position?
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Apr 26, 2012
I am inserting empno in a table1 and updating another table2 using table1 empno and getting ora-01427 error. I want to print empno for whis this error is coming. How to print that value?
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