A fix is available
APAR status
Closed as new function.
Error description
In a single signon IMS environments, when a terminal connection is lost, the existing IMS session can remain active as an orphan. Subsequent signon attempts by the same user are then rejected with DFS3649A RC=240. To recover, the user must either wait for the ALOT/ASOT timeout or have an operator manually issue /STO USER or /CLSDST NODE commands. This APAR enhances IMS ETO Support to provide a new option (FORCE SIGNOFF ON SIGNON) that, when enabled, automatically disconnects the existing session before signon so that the user can sign on without manual intervention or timeout delays. The automatic disconnection occurs only when the password or passphrase is verified as correct by RACF. Use case - Eliminate operator intervention and ASOT timeout delays for users blocked by orphan sessions in single signon environments
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All IBM IMS Extended Terminal Option Support * * for z/OS Version 3 Release 2 (FMID=H1J4320) * * users. * **************************************************************** * PROBLEM DESCRIPTION: The Force Signoff on Signon function * * has been added for SLU2/3270 devices in * * a single signon environment. When * * enabled, IMS ETO Support automatically * * closes an existing session, allowing * * the signon to proceed instead of being * * rejected because of an existing * * (possibly orphaned) session. * * This function requires that "IMS * * DEFAULT" be specified for "LTERM/USER * * NAMING OPTIONS". * **************************************************************** * RECOMMENDATION: Apply the maintenance for this APAR. * * * **************************************************************** This enhancement is being implemented as a result of IBM IDEA IMSETO-I-3.
Problem conclusion
Temporary fix
Comments
APAR Information
APAR number
PH72016
Reported component name
IMS ETO SUPPORT
Reported component ID
5655E1200
Reported release
320
Status
CLOSED UR1
PE
NoPE
HIPER
NoHIPER
Special Attention
YesSpecatt / New Function / Xsystem
Submitted date
2026-06-29
Closed date
2026-08-28
Last modified date
2026-09-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UO09192
Modules/Macros
IZTCCMDF IZTDLST0 IZTDUPD0 IZTLIST IZTUD1U0
Fix information
Fixed component name
IMS ETO SUPPORT
Fixed component ID
5655E1200
Applicable component levels
R320 PSY UO09192
UP26/09/01 P F608
Fix is available
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Document Information
Modified date:
02 September 2026