PM30090: ARRAYINDEXOUTOFBOUNDSEXCEPTION WHEN WRITING TO A LOGSTREAM WITH AN EMPTY BYTE ARRAY AND SPECIFYING ZERO LENGTH.

7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server
Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When running WebSphere Application Server on zOS, you can use
  JZOS feature to read and write to a Logstream.
  
  Using JZOS API. an Application will encounter an
  'ArrayIndexOutOfBoundsException' when writing with an empty byte
  array and specifying zero length.
  
  The exception stack will look like below.
  
  java.lang.reflect.InvocationTargetException
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcces
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMet
  at java.lang.reflect.Method.invoke(Method.java:600)
  at command.CommandExecuter.execute(CommandExecuter.java:115)
  at command.CommandExecuter.main(CommandExecuter.java:66)
  Caused by: java.lang.ArrayIndexOutOfBoundsException: Array index
  out of range: 0
  at com.ibm.jzos.ZLogstreamI.write(ZLogstreamI.java:379)
  at com.ibm.jzos.ZLogstreamI.write(ZLogstreamI.java:340)
  at command.SyslogCommands.sys_blank(SyslogCommands.java:104)
  ... 6 more
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server V7.0                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: ArrayIndexOutOfBoundsException in       *
  *                      ZLogstreamI.write when writing an       *
  *                      empty byte[] buffer.                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  ZLogstreamI.write suffers an ArrayIndexOutOfBoundsException
  when writing with an empty byte[] buffer and specifying a zero
  length.
  
  The ArrayIndexOutOfBoundsException also occurs under methods
  ZLogstreamI.read and ZLogstreamI.readMultiBlock.
  

Problem conclusion

• The ArrayIndexOutOfBoundsException was corrected.  Any attempt
  to read or write while specifying a zero length returns
  immediately without performing any work.
  
  APAR PM30090 is currently targeted for inclusion in Service
  Level (Fix Pack) 7.0.0.17 of WebSphere Application Server V7.0.
  
  Please refer to URL:
  //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
  for Fix Pack availability.
  

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

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels

• R700 PSY UK67335

     UP11/05/19 P F105

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.