PK94960: COMMAND SERVER CRASH AFTER TEMPORARY WORK FILE EXCEEDS 4GB SIZE

APAR status

• Closed as program error.

Error description

• When using a Page Size of 64K and processing a large input file,
  that causes the temporary Work File to exceed 4 GB size, a
  Command Server crash occurs.
  
  The crash problem occurs when the 64K maximum number of pages is
  reached when the Work File reaches 4 GB size.
  
  64K Page Size x 64K Page Count = 4GB Work File
  
  Using a larger Page Size value would allow a larger Work File
  size to be created.
  
  For example, the maximum Page Size of 1024K will allow a Work
  File size of 64 GB.
  
  1024K Page Size x 64K Page Count = 64GB Work File
  
  When the maximum Page Count is reached, the WTX product should
  report a message indicating that maximum number of pages has
  been reached instead of causing a crash to occur.
  

Local fix

• WTX00031763
  

Problem summary

• Users Affected:
  Websphere Transformation Extender (WTX) clients running maps
  with huge data and when the work file size is very large.
  
  Problem Description:
  When Websphere Transformation Extender reaches max number of
  work file pages, it crashes with the following stack trace:
  0: is GethpDI:0xd229e8b4+0x2c
  1: is GetAppropriateInstance:0xd235b3c0+0x3b8
  2: is GetAppropriateInstance:0xd235b3c0+0x518
  3: is GetAuditInstance:0xd235b9b8+0x618
  4: is AuditData:0xd235c154+0xd98
  5: is RunInstance:0xd2290e68+0x2de4
  6: is RunMercMap:0xd2295098+0x9c
  7: is PerformMapping:0xd2296160+0xac
  8: is RunAllMaps:0x1002bb3c+0x1380
  9: is main:0x10001f80+0x15d0
  
  The max number of pages is 64K. If the page size is set to 64K,
  the max size of work file is 4G.
  
  Platforms Affected:
  All
  

Problem conclusion

• Fixed a problem when the max number of pages is reached. The
  code is changed to handle error condition and report map failure
  10. The error is: max number of pages reached.
  
  Delivered in:
  8.1.0.6, 8.2.0.5, 8.3.0.0
  

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 LAUNC

• Fixed component ID

  5724M4011

Applicable component levels

• R810 PSY

     UP

• R820 PSY

     UP