Direct links to fixes
APAR status
Closed as program error.
Error description
Customer migrated from PCOM 5.9.2 to PCOM 6.0.10 (20140409) and is having a session hang in some workstations. . In the PCOM trace we see that the hang condition occurs while transferring large amount of data using CONTROL-M (in this case) under NVAS/TSO.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * All users of IBM Personal communications connected to z * * series host. * **************************************************************** * PROBLEM DESCRIPTION: * * With large chained data from Z series host, sometimes the * * users may face the following symptoms: * * 1. IBM Personal communications display sessions may hang; * * 2. The emulator sessions may notice slow down in * * performance. * **************************************************************** * RECOMMENDATION: * **************************************************************** The session hang is observed when there is large volume of data from the host where the definite response (TN3270 RESPONSE-FLAG) is not requested. The problem was caused by an incorrect pointer arithmatic that took place only when TN3270 header was split across TN3270 data packets. The performance slow down was due to a delay in processing the incoming data packets. This can be seen only when definite response is not sought.
Problem conclusion
To address the session hang problem, the pointer arithmatic code has been corrected. Considering the sensitivity of the code, a pcswin.ini keyword has been introduced to enable the fix. To enable the fix, please add the following keyword to pcswin.ini file: [Telnet] HandleSplitDS=Y Additional code changes have been put in place to improve performance. The fix is independent of the above keyword. Fix scheduled for IBM Personal Communications 6.0.14 Refresh Pack.
Temporary fix
Comments
APAR Information
APAR number
IT07049
Reported component name
PCOMM V5 COMBO-
Reported component ID
5639I7000
Reported release
60A
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-02-09
Closed date
2015-03-20
Last modified date
2015-03-20
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
pcstlnet
Fix information
Fixed component name
PCOMM V5 COMBO-
Fixed component ID
5639I7000
Applicable component levels
R60D PSN
UP
[{"Line of Business":{"code":"LOB35","label":"Mainframe SW"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSEQ5Y","label":"Personal Communications"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"60A"}]
Document Information
Modified date:
26 September 2021