PM74822: TCP/IP COMMUNICATION ERROR AFTER APPLY OF UK78973 (APAR PM63132)WHEN EDITTING A JCL IN THE JS FILE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• EQQX602E 'THE COMMUNICATION WAS UNEXPECTEDLY RESET BY THE PEER'
  WHEN TRANSFERING BIG AMOUNT OF DATA OVER TCP/IP LINK.
  THIS CAN AFFECT DIALOG USER AND PIF PGM THAT USES THE TCP/IP
  SERVER FOR REMOTE CONTROLLER ACCESS.
  IN CASE OF COMMUNICATION ERROR, THE CURRENTLY ACCESSED OBJECT,
  MAY NOT UNLOCKED.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All TWS for zOS Dialog users connected       *
  *                 through Server via TCPIP.                    *
  *                 FUNCTION=SERV                                *
  ****************************************************************
  * PROBLEM DESCRIPTION: A Dialog session, TCPIP connected, can  *
  *                      stop with messages EQQX602E or EQQX601E *
  *                      when editing a big JCL in MCP.          *
  ****************************************************************
  * RECOMMENDATION: APPLY THE PTF FIXING THIS APAR               *
  ****************************************************************
  When editing a big (which cannot fit into a 64K buffer) JCL
  from MCP Operations panel (Option 5.3 and "J" command), the
  TCPIP Dialog session with the Server drops with either one of
  these messages:
  EQQX602E 'THE COMMUNICATION WAS UNEXPECTEDLY RESET BY THE PEER'
  or
  EQQX601E ERROR on Connection To Server With ADDRESS and PORT:
  xxx yyy. WriteOnSocket in state Send failed, RC 0012, RS 0140.
  As a consequence the JCL might remain locked to the dialog
  user.
  Any data (big in size), flowing through TCPIP Server connection
  might be affected by this problem.
  

Problem conclusion

• In the new released enhanched Server TCPIP code section,
  when the size of the object to be sent over the TCP/IP Server
  connection is over 64K, the new dynamically allocated buffer
  is correctly filled with the remaining part of the data to be
  transferred.
  602Y
  EQQZTSER
  

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:

  UK83435

Modules/Macros

•    EQQZTSER
  

Fix information

• Fixed component name

  TIV WRKLD SCHD

• Fixed component ID

  5697WSZ01

Applicable component levels

• R602 PSY UK83435

     UP12/12/14 P F212

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.