PI06120: USING THE XML DIFF MERGE TOOL IN THE NATIVE CLEARCASE GUIS RESULTS IN A MAJOR PERFORMANCE ISSUE

APAR status

• Closed as Permanent restriction.

Error description

• When you are using the IBM Rational ClearCase XML Diff Merge
  tool to compare, diff, or merge files in the native ClearCase
  GUIs, you will experience extremely slow performance.  You will
  also see high memory and CPU consumption.
  
  This occurs using ClearCase Explorer and the Version Tree
  Browser when comparing, diffing, merging or delivering files to
  a stream.
  It also occurs the Unified Change Management (UCM) GUIs when
  doing a deliver or rebase that requires a merge operation.
  
  WORKAROUND:
  
  If you use ClearTeam Explorer (CTE) with UTF8 set, you will not
  see this issue.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Windows users of the ClearCase XML Diff Merge                *
  * tool to compare, diff, or merge files in the native          *
  * ClearCase                                                    *
  * GUIs.                                                        *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When you are using the IBM Rational ClearCase XML Diff Merge *
  * tool to compare, diff, or merge files in the native          *
  * ClearCase                                                    *
  * GUIs, you will experience extremely slow performance.  You   *
  * will                                                         *
  * also see high memory and CPU consumption.                    *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Please see problem conclusion.                               *
  ****************************************************************
  

Problem conclusion

• Please use either the kdiff3 or UTF solution:
  
  To change the default XML DIff Merge tool by Kdiff3 please see
  technote:
  http://www-01.ibm.com/support/docview.wss?uid=swg21256807
  
  
  To set UTF diff merge as the default tool for a specific type of
  file:
  Find the Element type manager being used ("_xml2" in this
  example).  Now open the map file, C:\Program
  Files\IBM\RationalSDLC\ClearCase\lib\mgrs\map  and modify the
  xcompare and xmerge entries of the type manager from
  xmldiffmrg.exe to ucleardiffmrg.exe
  
  For example,
  _xml2            xcompare            ..\..\bin\xmldiffmrg.exe
  _xml2            xmerge                ..\..\bin\xmldiffmrg.exe
  to
  _xml2            xcompare            ..\..\bin\ucleardiffmrg.exe
  _xml2            xmerge
  ..\..\bin\ucleardiffmrg.exe
  
  If you want to make this change for all element types which uses
  xmldiffmrg.exe then you can do a replacement of all
  xmldiffmrg.exe to ucleardiffmrg.exe in the map file.
  

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

Applicable component levels