IV27873: WMQ JMS EXCEPTION "JMSCC0046: IT IS NOT PERMITTED TO CALL METHOD'GETBODYLENGTH'" RECEIVED, EVEN AFTER APPLYING APAR IV09196

WebSphere MQ V7.0 Fix Pack 7.0.1.10

APAR status

• Closed as program error.

Error description

• After installing the WebSphere MQ fix for APAR IV09196 on the
  WebSphere Application Server v7 and setting the Java system
  property to the name and value:
  
  -Dcom.ibm.jms.forceDeserializedJMSBytesMessagesToReadOnlyMode=
  true
  
  as per the IV09196 APAR instructions, the application continues
  receives the exception:
  
  JMSCC0046: It is not permitted to call method 'getBodyLength'
  on the message because the message body is write-only. A user
  application has attempted to read a write-only message body.
  Change the application program to remove this behavior, or call
  the reset() method first.
  

Local fix

• change the property spelling to:
  com.ibm.jms.forceDeseralizedJMSBytesMessagesToReadOnlyMode=true
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of:
  
  - The WebSphere MQ V7.0 classes for JMS.
  - The WebSphere MQ V7.0 Resource Adapter.
  - The WebSphere Application Server V7 WebSphere MQ messaging
  provider.
  - The WebSphere Application Server V8 WebSphere MQ messaging
  provider.
  - The WebSphere Application Server V6.1 WebSphere MQ messaging
  provider who have configured the WebSphere variable
  MQ_INSTALL_ROOT to point to a WebSphere MQ V7.0 installation.
  
  who are attempting to use the JVM system property:
  
  com.ibm.jms.forceDeserializedJMSBytesMessagesToReadOnlyMode
  
  introduced in APAR IV09196.
  
  Platforms affected:
  All Distributed (iSeries, all Unix and Windows) +Java +Java zOS
  ****************************************************************
  PROBLEM SUMMARY:
  APAR IV09196 introduced a JVM system property to change the
  default behaviour of a deserialized JMSBytesMessage message to
  be in read-only as opposed to the v7 default of write-only.
  This system property is called:
  
  com.ibm.jms.forceDeserializedJMSBytesMessagesToReadOnlyMode
  
  However, setting this property did not result in the
  JMSBytesMessage being put into the read-only mode, due to a
  defect in the internal mechanism used to look up the property.
  

Problem conclusion

• This APAR solves this issue by changing the code mechanism used
  to look up the system property:
  
  com.ibm.jms.forceDeserializedJMSBytesMessagesToReadOnlyMode
  
  to ensure that the behaviour as defined in APAR IV09196 is
  adhered to.
  
  
  | MDVPARTL 7.0.1-WS-MQ-AixPPC64-FP0008       |
  | MDVPARTL 7.0.1-WS-MQ-HpuxIA64-FP0008       |
  | MDVPARTL 7.0.1-WS-MQ-HpuxPaRISC64-FP0008   |
  | MDVPARTL 7.0.1-WS-MQ-LinuxIA32-FP0008      |
  | MDVPARTL 7.0.1-WS-MQ-LinuxPPC64-FP0008     |
  | MDVPARTL 7.0.1-WS-MQ-LinuxS390X-FP0008     |
  | MDVPARTL 7.0.1-WS-MQ-LinuxX64-FP0008       |
  | MDVPARTL 7.0.1-WS-MQ-SolarisSparc64-FP0008 |
  | MDVPARTL 7.0.1-WS-MQ-SolarisX64-FP0008     |
  | MDVPARTL 7.0.1-WS-MQ-Windows-FP0008        |
  | MDVPARTL 7.0.1-WS-MQ-AixPPC64-FP0009       |
  | MDVPARTL 7.0.1-WS-MQ-HpuxIA64-FP0009       |
  | MDVPARTL 7.0.1-WS-MQ-HpuxPaRISC64-FP0009   |
  | MDVPARTL 7.0.1-WS-MQ-LinuxIA32-FP0009      |
  | MDVPARTL 7.0.1-WS-MQ-LinuxPPC64-FP0009     |
  | MDVPARTL 7.0.1-WS-MQ-LinuxS390X-FP0009     |
  | MDVPARTL 7.0.1-WS-MQ-LinuxX64-FP0009       |
  | MDVPARTL 7.0.1-WS-MQ-SolarisSparc64-FP0009 |
  | MDVPARTL 7.0.1-WS-MQ-SolarisX64-FP0009     |
  | MDVPARTL 7.0.1-WS-MQ-Windows-FP0009        |
  
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v7.0       7.0.1.10
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

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

  WMQ AIX V7

• Fixed component ID

  5724H7221

Applicable component levels

• R700 PSY

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