PI80637: MATHLIB->RAND() FUNCTION NOT WORKING CORRECTLY IN MULTI-THREADED SCENARIO

APAR status

• Closed as program error.

Error description

• Mathlib->RAND() function not working correctly in multi-threaded
  scenario
  
  mathlib->RAND() function is not returning random sequenced
  number when executed in multithreaded environment.
  
  In addition, on Linux and HPUX , all functions defined in
  mathlib library are not thread safe and may result with
  undefined result or process abend,
  

Local fix

• TXRTC - 60700
  AR / AR
  Circumvention: None
  

Problem summary

• Users Affected:
  IBM Transformation Extender customers who use RAND function on
  all platforms  or any mathlib function on Linux and HPUX.
  
  Problem Description:
  mathlib->RAND() function is not returning random sequenced
  number when executed in multithreaded environment.
  In addition, on Linux and HPUX , all functions defined in
  mathlib library are not thread safe and may result with
  undefined result or process abend
  
  Platforms Affected:
  All
  

Problem conclusion

• Correct mathlib->RAND() function to be multithreading safe.
  Correct code that converts math functions result to the buffer
  to be multithreading safe on Linux and HPUX.
  
  Applies to:
  8.4.1.4, 9.0.0.1
  
  Fixed in the next service packs and releases.
  
  To obtain the fix for this APAR:
  
  To see if the next service pack or product release is available,
  check the IBM Transformation Extender Downloads page:
  http://www.ibm.com/support/entry/portal/product/other_software/t
  ransformation_extender
  
  If the service pack or product release is available, download it
  from Fix Central:
  http://www.ibm.com/support/fixcentral/
  
  If the service pack or product release is not available and you
  require the APAR fix immediately, request a Limited Availability
  Interim Fix (LAIF) by opening a PMR:
  http://www.ibm.com/support/servicerequest/Home.action
  
  Prior to version 9.0.0, IBM Transformation Extender was called
  IBM WebSphere Transformation Extender.
  

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

  ITX LAUNCHER

• Fixed component ID

  5724M4011

Applicable component levels

• R841 PSY

     UP

• R900 PSY

     UP