PK75600: 3270 BRIDGE TRANSACTION ENCOUNTERS GARBAGE ON THE SCREEN WHEN INVOKED IN CONTINUATION MODE.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The customer stated when running the 3270 bridge transaction in
  initial mode it works as designed. When running the transaction
  in continuation mode the second screen encounters white spaces
  left from the prior screen.
  .
  The problem is caused by code in DFHBRTB which processes the
  ERASE of the screen. Eventhough the ALTERNATE screen size is
  being used it is only clearing attributes from an area the size
  of the default screen size.
  .
  When the HTML is built on the second send it finds these old
  attributes from the previous send so creates new HTML fields.
  However, the information relating to those attributes has been
  deleted so these field default to being unprotected.
  .
  Additional Keywords:
  3270 Bridge garble white space whitespace incorrect data
  KIXREVDAM
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: The screen displayed by a transaction   *
  *                      accessed via the 3270 Web Bridge may    *
  *                      contain unexpected unprotected fields   *
  *                      if the application issues an EXEC CICS  *
  *                      SEND ALTERNATE ERASE after a previous   *
  *                      EXEC CICS SEND MAP ALTERNATE command.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  DFHBRTB routine dfhrtb_erase uses brvs_plane_size which is the
  length for a default size screen to clear the screen buffer and
  attribute planes of an alternate size screen.
  This can result in spurious unprotected fields being displayed
  towards the bottom of the screen.
  

Problem conclusion

• DFHBRTB has been amended to use brvs_attr_plane_len on the MVCL
  instruction that clears the screen buffer and attribute planes
  in routine dfhrtb_erase.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UK44916 UK44917

Modules/Macros

•    DESBRTB  DFHBRTB  DFHBRTQ
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK44916

     UP09/03/19 P F903

• R500 PSY UK44917

     UP09/03/19 P F903

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.