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RE: callout listener and external procedure issue

From: Kempf, Reed <rkempf_at_rightnow.com>
Date: Mon, 09 Jul 2001 15:35:09 -0700
Message-ID: <F001.00344F48.20010709154531@fatcity.com>

Thanks for the insight, unfortunately I am passing parameters into my external procedure and returning a numreric value which is passed onto the rest of my plsql routines.

Here is my c function:

-- ************* START OF FUNCTION CHECK_FAQ ************************
-- This procedure references an IN variable for the external C function
-- RetrieveURL and maps the library in the database which points to
-- the C external procedure to be run.  This external function will
-- return an integer value for the request time (positive number) or
-- an error code (negative number).
-- *************

FUNCTION check_faq
(RetrieveURL IN VARCHAR2,
timeout IN BINARY_INTEGER)
RETURN BINARY_INTEGER
AS
LANGUAGE C
NAME "rnt_url"
LIBRARY MY_C_LIB
PARAMETERS (

RetrieveURL     string,
timeout         int);

I have to restart my callout listener to have my program successfully run.

-----Original Message-----
Sent: Monday, July 09, 2001 5:20 PM
To: Multiple recipients of list ORACLE-L

"Kempf, Reed" wrote:
>
> Hello gurus,
>
> I have written a plsql package which incorporates an external C procedure
> and therefore utilizes a callout listener and am having problems with the
> callout listener losing connection in the middle of my program
>
> Has anyone out there had any sort of similar problems using an external
> procedure and a callout listener and if so is there a patch or workaround
> for this.
>
> Here is my listener.ora file:
>
> # LISTENER.ORA Network Configuration File:
> /opt/oracle/product/8.1.7/network/admin/listener.ora
> # Generated by Oracle configuration tools.
>
> LISTENER_1 =
> (DESCRIPTION_LIST =
> (DESCRIPTION =
> (ADDRESS_LIST =
> (ADDRESS =
> (PROTOCOL = TCP)
> (HOST = weaklink)
> (PORT = 1521))
> )
> )
> )
>
> CALLOUT =
> (ADDRESS_LIST =
> (ADDRESS =
> (PROTOCOL=IPC)
> (KEY=EXTPROC)
> )
> )
>
> SID_LIST_LISTENER_1 =
> (SID_LIST =
> (SID_DESC =
> (SID_NAME = WEAKLINK)
> (ORACLE_HOME = /opt/oracle/product/8.1.7)
> )
> )
>
> SID_LIST_CALLOUT =
> (SID_LIST =
> (SID_DESC =
> (SID_NAME = CALLOUT)
> (ORACLE_HOME = /opt/oracle/product/8.1.7)
> (PROGRAM = /opt/oracle/product/8.1.7/bin/extproc)
> )
> )
>
> Reed
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Kempf, Reed
> INET: rkempf_at_rightnow.com
>

Reed,

   Don't know how it works in your case but remember that external procedures are dynamically loaded. If you are using static variables, they may be reset anytime. The reason may be that your proc is flushed out of memory, then called back.

-- 
Regards,

Stephane Faroult
Oriole Corporation
Voice:  +44  (0) 7050-696-269 
Fax:    +44  (0) 7050-696-449 
Performance Tools & Free Scripts
--------------------------------------------------------------
http://www.oriole.com, designed by Oracle DBAs for Oracle DBAs
--------------------------------------------------------------
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Kempf, Reed
  INET: rkempf_at_rightnow.com

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Received on Mon Jul 09 2001 - 17:35:09 CDT

Original text of this message

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