OA60662: HOD 14.0.2 -TN3270 CONNECTIONS STAYING ACTIVE UNTIL HOD DESKTOP CLOSED.

IBM Host On-Demand 14.0.3

APAR status

• Closed as program error.

Error description

• When a HOD 3270 session is closed by the client user, it does
  not end the TN3270 connection on the remote host (z/OS system,
  z/VM system, etc.). The connection stays in an established
  state on the host. The entire HOD Desktop has to be closed in
  order to end any of these established TN3270 connections on the
  host.
  
  This behavior can be tested / recreated with HOD.html
  in Internet Explorer, HODCached.html in Internet Explorer, and
  the Java Web Start version of HOD.html (accessing the page in
  Chrome and launching it with Java Web Start).
  
  Essentially
  these TCPIP connections stay active on the host, thereby
  keeping the LUs reserved on the z/OS host. This can exhaust the
  LU pool on a given TN3270 port on the z/OS host if an end user
  keeps their HOD Desktop open (an Internet Explorer session with
  the HOD page open, or a Java Web Start HOD Desktop, etc.)
  because they think they have closed all their HOD sessions but
  the connections are remaining in an established state on the
  host. This causes other users to be unable to even connect to
  the z/OS host because there are no LUs remaining in the pool
  for that TN3270 port.
  This issue has also a bearing on Managed
  HOD.
  
  This issue is closely related with (if not identical to)
  APAR IT007723 .
  https://www.ibm.com/support/pages/apar/IT07723
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All Host On-Demand users                                     *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When user closes the HOD session in the client workstation,  *
  * the session remains established on the host.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  TCP/IP connections stay active on the host, thereby keeping the
  LUs reserved and not available to other users. This can exhaust
  the LU pool on a given TN3270 port on the z/OS host if an end
  user keeps their HOD Desktop open because the connections
  remain in an established state on the host.
  

Problem conclusion

• Code changes have been made to disconnect the session from the
  host once the session ends in the client workstation.
  
  Fix included in HOD 14.0.3
  

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:

Modules/Macros

• HOD
  

Fix information

• Fixed component name

  HOD MVS

• Fixed component ID

  5733A5900

Applicable component levels

• RE00 PSY

     UP