IJ48894: SYSTEM.LOAD() UNABLE TO LOAD MVS DATASET MODULE

APAR status

• Closed as program error.

Error description

• Error Message: java.lang.UnsatisfiedLinkError exception with an
  unexpected error message - Not an absolute path: JNIDEMO is
  received.
  .
  Stack Trace: N/A
  .
  

Local fix

• Here follows workaround instructions for loading a dataset
  module from Java.
  These instructions use the example dataset name "JNIDEMO" and
  filename "libjniDemo.so", please replace these.
  
  1. Create an external link in a USS directory that points to
  JNIDEMO with a name that has the prefix "lib" and postfix ".so"
  For example, ln -e JNIDEMO libjniDemo.so
  2. Include the path of that USS directory in java.library.path
  or LIBPATH.
  3. Make sure that the JNIDEMO module is in a PDS/E that is
  either in the STEPLIB of the Java process or that it's in
  LINKLIST.
  4. Change the System.load(JNIDEMO) Java code to
  System.loadLibrary("jniDemo"). System.loadLibrary() will prefix
  "lib" to the given library name and append ".so" automatically.
  

Problem summary

• The implementations of System.load() and loadLibrary() APIs
  failed to accept z/OS load modules within MVS datasets,
  resulting in a potential java/lang/UnsatisfiedLinkError error
  being thrown.
  

Problem conclusion

• The error checking and handling of filepaths/module-names have
  been updated to correctly parse z/OS load modules.
  .
  This APAR will be fixed in the following Releases:
  .
  IBM Semeru Runtimes
     17              17.0.9.0
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  maintenance can be found at:
             https://www.ibm.com/support/pages/java-sdk
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  OPENJDK CLASS L

• Fixed component ID

  621800100

Applicable component levels