Executing OS Commands Fail with 512 Error when using Multi-threaded Extproc Agent

(Doc ID 1338515.1)

Last updated on JULY 05, 2017

Applies to:

Oracle Net Services - Version: to - Release: 10.2 to 11.2
PL/SQL - Version: to   [Release: 10.2 to 11.2]
Information in this document applies to any platform.


Executing OS Commands using Multi-threaded Extproc Agent fails with error
code 512 .

Starting MTA agent on the Unix server(telnet session) with the following command :

>agtctl startup extproc MTAagent_1

And everything was working fine up to some point.

Return code of 512 is intermittently returned when executing OS command, 'ls'.

After first occurrence the error occurs until Multi-threaded Extproc Agent is restarted.

In this case error seems to only reproduce for 'ls' command and  might occur
with any OS command execution.

Also noticed that if instead of a simple "ls /etc/oratab", if
"ls /etc/oratab >> dummy.out" (redirect the output of the ls command), the error doesn't occur.

Everything is working correctly as long as the Unix session(telnet) that started the MTA agent is up and running.


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