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6 Replies Latest reply: Feb 5, 2013 2:50 AM by Gennady Sigalaev RSS

Calling external C function from plsql - ORA-06521 error mapping function

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Dear All,

I have the following C code:
class Factorial {
  public:
  int getVal (int a);
};

#include "Factorial.h"
int Factorial::getVal (int a){
  if(a!=1){
    return(a * getVal(a-1));
    }
  else return 1;
}
I created the shared library(.so), created library inside Oracle DB, set up the extproc in listener and etc.
Also I created the following plsql code:
CREATE OR REPLACE PACKAGE c_pack AS
  function factorial_func(x in pls_integer) return pls_integer;
END;
/
CREATE OR REPLACE PACKAGE BODY c_pack AS

   function factorial_func(x in pls_integer)
     return  pls_integer
   as language c
   library sys.c_factorial
   name "getVal";
   
END;
/
When I am trying to execute this function always get the ORA-06521. I changed the data types - but nothing changed.

Please help.

Just in case, listener.ora
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = db)(PORT = 1521))
                   (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) 
    )
  )

ADR_BASE_LISTENER = /u01/app/oracle

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
     (SID_NAME = PLSExtProc)
     (ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
     (PROGRAM = extproc)
     (ENVS = "EXTPROC_DLLS=/u01/app/oracle/product/c_lib/factorial.so, LD_LIBRARY_PATH=/u01/app/oracle/product/11.2.0/dbhome_1/lib")
    )
  )
[oracle@db admin]$ lsnrctl status listener

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-FEB-2013 21:24:36

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=db)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     listener
Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date                04-FEB-2013 21:23:37
Uptime                    0 days 0 hr. 0 min. 58 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/db/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=db)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
  Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
  Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
[oracle@db admin]$

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