IV52056: JAVA.LANG.UNSATISFIEDLINKERROR: WHILE LOADING LIBAWT.SO LIBRARY

APAR status

• Closed as program error.

Error description

• Error Message: JNI application gets
  java.lang.UnsatisfiedLinkError while loading libawt.so :-
  .
  Stack Trace: java.lang.UnsatisfiedLinkError: awt (An exception
  was pending after running JNI_OnLoad)
  at
  java.lang.ClassLoader.loadLibraryWithPath(ClassLoader.java:1011)
  at
  java.lang.ClassLoader.loadLibraryWithClassLoader(ClassLoader.jav
  a:975)
  at java.lang.System.loadLibrary(System.java:469)
  at
  sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java
  :69)
  at
  java.security.AccessController.doPrivileged(AccessController.jav
  a:202)
  at java.awt.image.ColorModel.loadLibraries(ColorModel.java:199)
  at java.awt.image.ColorModel.<clinit>(ColorModel.java:207)
  at java.lang.J9VMInternals.initializeImpl(Native Method)
  at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
  at java.awt.image.BufferedImage.<clinit>(BufferedImage.java:285)
  at java.lang.J9VMInternals.initializeImpl(Native Method)
  at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
  at
  AWTTestFlow_JavaCompute.evaluate(AWTTestFlow_JavaCompute.java:28
  )
  at
  com.ibm.broker.javacompute.MbRuntimeJavaComputeNode.evaluate(MbR
  untimeJavaComputeNode.java:232)
  at com.ibm.broker.plugin.MbNode.evaluate(MbNode.java:1469)
  .
  N/A
  

Local fix

• The following work around at application level can be applied to
  avoid the issue:
   .Avoid using RTLD_GLOBAL flag while loading JNI libraries.
  OR
   .Load libawt.so in advance before loading the application JNI
  library which uses RTLD_GLOBAL flag.
  

Problem summary

• The JDK uses a common symbol to identify the path of its library
  and result in pointing to a wrong library path due to the symbol
  conflict with the JNI application.
  

Problem conclusion

• This APAR will be fixed in the following Java Releases:
     7    SR7       (7.0.7.0)
     6    SR16      (6.0.16.0)
     5.0  SR16_FP5  (5.0.16_.5)
  .
  The JDK has been updated to use a unique JDK specific symbol to
  avoid the conflict with other native libraries..
  

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:

  IV52057

Fix information

• Fixed component name

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R700 PSY

     UP

• R600 PSY

     UP