IV68284: JAVA.UTIL.TIMEZONE.GETDEFAULT() ADDS DST OFFSET FOR NON DST DATE S IN MULTI-THREADED ENVIRONMENT

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  TimeZone.getDefault() is adding DST offset of one hour for non
  DST dates, in a multi-threaded environmentThe java.util.Calendar
  filed value HOUR_OF_DAY contains time component set for non DST
  dates. The problem surfaced intermittently in a multi-threaded
  batch processing environment for customer.
  

Local fix

Problem summary

• The problem occurs due to a race condition between threads
  executing java.util.TimeZone.getDefault() and
  GregorianCalendar(), when the default timezone is set to
  SimpleTimeZone.
  

Problem conclusion

• JDK has been updated to avoid the race condition in a
  multi-threaded environment.
  .
  This APAR will be fixed in the following Java Releases:
     6    SR16 FP4  (6.0.16.4)
     6 R1 SR8 FP4   (6.1.8.4)
     7    SR9       (7.0.9.0)
     8    SR1       (8.0.1.0)
     7 R1 SR3       (7.1.3.0)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the 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

• R600 PSY

     UP

• R700 PSY

     UP

• R800 PSY

     UP