How can I get the exit code of a script .bat for Java back to PL/SQL?

When you call a .bat script, only the exit code 1 returns. How can I get 7 back to the PL/SQL in the code example below?

C:\Users\pwatson\src\java > type vv.sql

set echo on

-call dbms_java.grant_permission ('SYSTEM', 'SYS:java.io.FilePermission', '< < all FILES > >', 'run');

HOME @EXIT/b ECHO 7 > vv.bat

TYPE of HOST vv.bat

CREATE OR REPLACE AND COMPILE THE SOURCES NAMED AS VV JAVA

import of java.lang.Runtime;

public class VV

{

public static int execute()

survey java.io.IOException, java.lang.InterruptedException

{

int exitCode = 0;

Duration rt = java.lang.Runtime.getRuntime ();

Process proc = rt.exec ("cmd.exe /C v.bat 1 > NULL 2 > ZERO");

proc.waitFor ();

exitCode = proc.exitValue ();

return exitCode;

}

}

/

CREATE OR REPLACE FUNCTION JavaRunShellCommand

RETURN NUMBER

IN THE JAVA LANGUAGE

NAME 'VV.execute () return oracle.sql.NUMBER;

/

DISPLAY ERRORS

NUMBER VARIABLE n;

CALL JavaRunShellCommand() IN: n;

PRINT n

DISPLAY ERRORS

SELECT JavaRunShellCommand() AS R FROM DUAL;

DISPLAY ERRORS

HOST DEL v.bat

OUTPUT

It is strange that there are no errors. If the Java code does not work, I would expect an exception. Without an exception in the code handler, I expect to be propagated all the way to the top of the call stack and be displayed by the client. But there is no exception.

So that means, in my view, that there is nothing wrong with the code Java itself. He made the appeal successfully to run this external process. The fact that the external process falls down, is not an issue/error in Java.

If this is the case, then the first thing that comes to mind, is that the Oracle (oracle.exe) process that is currently running, runs as a service of the o/s. And that the service will try to run a command through the command shell script. There may be a security or problem access here that prevents the oracle.exe running as a service to do this.

Tags: Database

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