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Error=13, Permission denied at HTTP performance test recording

Technote (troubleshooting)


Attempts to record an IBM Rational Performance Tester test with socket recorder result in "Could not start dynamic_launcher ... .


The error message is as follows.

 "Could not start dynamic_launcher. See error log for more details".
Message from logs:
!ENTRY 4 0 2012-11-02 08:49:48.781
!MESSAGE Unexpected exception !STACK 0
Cannot run program"/ibm/IBM/IBMIMShared/plugins/": error=13,
Permission denied atjava.lang.ProcessBuilder.start( at$ at Caused by:
error=13, Permission denied at
java.lang.UNIXProcess.<init>( at
java.lang.ProcessImpl.start( at
java.lang.ProcessBuilder.start( ...  

You also see the following error in the error log. Cannot run program "/ibm/IBM/IBBMIMShared/plugins/": error=13, Permission denied

After you started the recording, the browser does not open. Test generation, however, completes.


The dynamic_launcher shell script that Rational Performance tester installed, does not have execute permissions.

This permission issue has been identified as a product defect and logged under APAR PM76827.


Rational Performance Tester 8.3 runs under root user.

Resolving the problem


  1. Log into the Linux system as root.

  2. Change to the following directory.


  3. Issue the following command.

    chmod +x dynamic_launcher

With this change, you should be able to start the Firefox recording with the Record traffic with the socket recorder option.

Document information

More support for: Rational Performance Tester
Record / Author tests

Software version: 8.3

Operating system(s): Linux, Windows

Reference #: 1616599

Modified date: 15 November 2012

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