IJ08569: JAVA.IO.IOEXCEPTION OCCURS WHEN A FILECHANNEL IS BIGGER THAN 2GB ON AIX PLATFORM

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: java.io.IOException: Invalid argument
          at sun.nio.ch.FileDispatcherImpl.truncate0(Native
  Method)
          at
  sun.nio.ch.FileDispatcherImpl.truncate(FileDispatcherImpl.java:9
  3)
          at sun.nio.ch.FileChannel
  .
  

Local fix

Problem summary

• On Aix platform, The special buffer processing required due to
  IY58283 uses the system call lseek and when FileChannel is
  bigger than 2gb, it fails because maximun offset value lseek can
  seek is > 2147483648 (2GB).
  

Problem conclusion

• JDK has been updated to use lseek64, when largefiles is enabled
  on AIX platforms.
  The issue was addressed for Linux paltforms in APAR IZ95389 by
  removing the special buffer processing and simply using
  ftruncate64 system call
  .
  This APAR will be fixed in the following Java Releases:
     8    SR5 FP21  (8.0.5.21)
     7 R1 SR4 FP35  (7.1.4.35)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             https://www.ibm.com/developerworks/java/jdk/
  

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

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R800 PSY

     UP

• R700 PSY

     UP