Write to syslog from pl/sql

Question

Hello Gurus !
I would like to write to syslog from pl/sql without 3rd party tools.
Do you have an idea how to achieve this ?
Thank you for your answer !
Ros

Answer 1

External procedure interface can be used. I have not implemented the openlog() and closelog() calls (got a weird problem with that). The syslog() call works fine on its own though.
o/s: Kubuntu 11.10
Oracle XE 10.2.0.1
// call:
//    void syslog(int priority, const char *format, ...);
// library:
//    libc
SQL> create or replace library libc as
  2          '/lib/i386-linux-gnu/libc.so.6'
  3  /
Library created.
SQL>
SQL> create or replace procedure WriteSysLog( priority binary_integer, message varchar2 ) is
  2          external
  3          library libc
  4          name "syslog"
  5          language C
  6          calling standard C
  7          parameters(
  8                  priority int,
  9                  message string
10          );
11  /
Procedure created.
SQL>
SQL> declare
  2          LOG_INFO        constant binary_integer := 6;
  3  begin
  4          WriteSysLog( LOG_INFO, 'All your syslogs messages are belong to us.' );
  5  end;
  6  /
PL/SQL procedure successfully completed.
SQL> And in +/var/log/syslog+ :
Feb  2 00:00:00 hostname extprocPLSExtProc: All your syslogs messages are belong to us.
..Note you need a properly configured external procedure (EXTPROC) service in the local Listener, and a valid TNS alias for it in the local tnsnames.ora file. (local, as in local on the Oracle server where the PL/SQL code is executed)